DMWR_55-4320-278.pdf

Pages From DMWR 55-4320-278, Dated 15 April 2016 Distribution D

* DMWR 55-4320-278

DEPOT MAINTENANCE WORK REQUIREMENT

FOR

VARIABLE DISPLACEMENT AXIAL PISTON PUMP ASSEMBLY

PV3-075-20 (145HS100-3) (NSN: 1650-01-115-3948)

PV3-075-20A (145HS100-5) (NSN: 1650-01-516-6740)

DISTRIBUTION STATEMENT C: Distribution authorized to U.S. Government agencies and their contractors only to protect technical or operational information from automatic dissemination under the International Exchange Program or by other means. This protection applies to the publications required solely for official use and to those containing valuable technical or operational information. This determination was made on 15 July 2007. Other requests for this document will be referred to Commander, U.S. Aviation and Missile Command, ATTN: AMSAM-MSS-LP, Redstone Arsenal, AL 35898- 5000.

WARNING: This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec 2751, et. seq.) or the Export Administration Act of 1979, as amended, Title 50, U.S.C., App. 2401 et. seq. Violations of these export laws are subject to severe criminal penalties.

Disseminate in accordance with provisions of DoD Directive 5230.25.

DESTRUCTION NOTICE: Destroy by any method that will prevent disclosure of contents or reconstruction of the document.

This publication is not available through U.S. Army Publication Distribution Center. It must be obtained from U.S. Army Aviation and Missile Command, ATTN:

AMSAM-MSS-LP, Redstone Arsenal, AL 35898-5000.

* This manual supersedes DMWR 55-4320-278, dated 30 June 1986, including all changes

U.S. ARMY AVIATION AND MISSILE COMMAND

15 April 2016

WARNING

CONSUMABLES

Observe all cautions and warnings when using consumables. When applicable, wear necessary protective gear during handling and use. If a consumable is flammable or explosive, MAKE CERTAIN consumable and its vapors are kept away from heat, spark, and flame. MAKE CERTAIN firefighting equipment is readily available for use. For additional information on toxicity, flashpoint, and flammability of chemicals, refer to TM 55- 1500-341-23.

WARNING

CLEANING SOLVENTS

Cleaning solvents may be toxic. Use in well-ventilated areas. Avoid prolonged inhalation of fumes or direct contact with skin. Do not use solvents near open flame or in areas where very high temperatures prevail. Solvents with a flash point above 100° F (38° C) should be used. However solvents with a flash point lower than 100° F (38° C) may be specified. Consult Material Safety Data Sheet (MSDS) for solvent flash point.

WARNING

COMPRESSED AIR

Compressed air shall not be used for cleaning purposes except where reduced to less than 30 psi and only then with an effective chip guarding and personnel protection equipment.Page 1 of 104; printed on: 30 May 2017 14:41:50

WARNING

HYDRAULIC TEST STAND OPERATION

Test stand shall be operated by authorized personnel only.

WARNING

ACETONE ASTM D329

Acetone is extremely flammable and toxic to eyes, skin and respiratory tract. Wear protective gloves and goggles/face shield. Avoid repeated or prolonged contact. Use only in well-ventilated (or use approved respirator as determined by local safety/industrial hygiene personnel.) Keep away from open flames, sparks, hot surfaces or other sources of ignition.

WARNING

ENSOLV−CW

Ensolv−CW is irritating to eyes, skin and respiratory tract. Irritant to mouth, mucous membranes and gastro-intestinal tract. Wear protective gloves and goggles/face shield. Avoid repeated or prolonged contact. Use only in well-ventilated (or use approved respirator as determined by local safety/industrial hygiene personnel.)

WARNING

SILICONE RTV102 3TG

Silcone is irritating to eyes, skin and respiratory tract. May be harmful if swallowed. Wear protective gloves and goggles/face shield. Avoid repeated or prolonged contact. Use only in well−ventilated (or use approved respirator as determined by local safety/industrial hygiene personnel.)

WARNING

SKYKLEEN 1000

SkyKleen 1000 is irritating to eyes, skin and respiratory tract. May be harmful if swallowed. Wear protective gloves and goggles/face shield. Avoid repeated or prolonged contact. Use only in well−ventilated (or use approved respirator as determined by local safety/industrial hygiene personnel.)

WARNING

HEATED PARTS

Heated parts are used in the removal and installation procedures. Death or severe burns may result if personnel fail to observe safety precautions. It may be necessary to heat parts containing bearings to a temperature of 250° F (121° C). Protective gloves should always be worn when handling heated parts.

WARNING

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1-1.

1-2.

a.

(1)

(2)

(3)

(4)

(5) b.

1-3.

OVERCOAT, 683-3-2 OR 683-3-20

Overcoat is flammable and poisonous. It can irritate skin and eyes. Avoid inhaling. Use only with adequate ventilation. Avoid contact with skin, eyes, or clothing. In case of eye contact, immediately flush with water for at least 15 minutes and get medical attention. For skin, wash thoroughly with soap and water. If difficulty breathing is experienced, leave area and obtain fresh air. If continued difficulty is experienced, get medical attention. If ingested, do not induce vomiting, get medical attention immediately.

CHANGES FOR REVISION DATED 15 APRIL 2016

CHAPTER/APPENDIX SECTION PARAGRAPH CHANGE

REPORTING OF ERRORS AND RECOMMENDING IMPROVEMENTS

You can help improve this IETM. If you find any mistakes or if you know of a way to improve the procedures, please let us know. If your IETM supports online forms, fill in the electronic publication change request and when connected to the internet, transmit the form. If your IETM does not support online forms, obtain a copy of a DA Form 2028 [Recommended Change to Publications and Blank Forms], Recommended Changes to Publications and Blank Forms. Your IETM may include a partially completed DA 2028. Print out the form and complete filling in the pertinent information. For IETMs without a printable DA Form 2028 [Recommended Change to Publications and Blank Forms], blank forms should be available through your publications system. Complete the DA Form 2028 [Recommended Change to Publications and Blank Forms] and mail it directly to: Commander, U.S.

Army Aviation and Missile Command, ATTN: AMSAM-MSS-LP, Redstone Arsenal, AL 35898-5000. A reply will be furnished to you. You may also provide DA Form 2028 information to AMCOM via e-mail, datafax, or the World Wide Web. Our fax number is: DSN 788-6546 or Commercial 256-842-6546. Our e-mail address is: 2028@redstone.army.mil. Instructions for sending an electronic 2028 may be found at the back of the applicable Operator's manual immediately preceding the hardcopy 2028. For the World Wide Web use: https://amcom2028.redstone.army.mil.

DISTRIBUTION STATEMENT C: Distribution authorized to U.S. Government agencies and their contractors only to protect technical or operational information from automatic dissemination under the International Exchange Program or by other means. This protection applies to the publications required solely for official use and to those containing valuable technical or operational information. This determination was made on 15 July 2007. Other requests for this document will be referred to Commander, U.S. Aviation and Missile Command, ATTN: AMSAM-MSS-LP, Redstone Arsenal, AL 35898- 5000.

WARNING: This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec 2751, et. seq.) or the Export Administration Act of 1979, as amended, Title 50, U.S.C., App. 2401 et. seq. Violations of these export laws are subject to severe criminal penalties.

Disseminate in accordance with provisions of DoD Directive 5230.25.

DESTRUCTION NOTICE: Destroy by any method that will prevent disclosure of contents or reconstruction of the document.

CHAPTER 1

INTRODUCTION

SECTION I. GENERAL

SCOPE.

These instructions are for use by depot contractor personnel. They apply to the Variable Displacement Axial Piston Pump Assembly, part number

PV3−075−20 (145HS100−3) and PV3−075−20A (145HS100−5) (Figure 1-1), and, in case of conflict, take precedence over all other documents pertinent to its overhaul and inspection.

MAINTENANCE FORMS AND RECORDS.

Department of Army forms and procedures used for equipment maintenance will be those prescribed by DA PAM 738−751 [Functional User’s Manual for the Army Maintenance Management System − Aviation (TAMMS−A)] and in the contract.

DEVIATIONS AND EXCEPTIONS.

Contractor Deviations. These instructions are used by contractor personnel. They apply to requests for work deviations exceptions and take precedence over similar procedures specified in application Depot Maintenance Work Requirement (DMWR). Care must be taken to assure that all AMCOM Engineering Directives (AEDs) relevant to the DMWR have been considered.

When any work segment as set forth in this Depot Maintenance Work Requirement cannot be accomplished, or can be accomplished only in a manner other than specified, the Contractor shall submit a Request for Depot Engineering Support Form AMSRD-AMR Form 1379 [Request for Depot Engineering Support] located in the back of this manual through the Contracting Officer to RDMR-AEM with a copy to SFAE-AV-CH-L.

If the problem is publications related or requires a change to a publication, a DA Form 2028 [Recommended Change to Publications and

Blank Forms] shall also accompany the request for action. The request for action shall state the problems, the reason for urgency, and give the specifics listed below:

Serial Number (if applicable), part number, and NSN of the affected equipment.

Work elements which will not be completed or which will not be accomplished exactly as specified herein.

Reason for nonaccomplishment or deviation.

Action taken to correct condition causing nonaccomplishment or need for deviation.

Data relative to availability of parts required, if applicable.Page 3 of 104; printed on: 30 May 2017 14:41:50

(6)

(7) c.

1-4.

Estimated labor-hours.

Instructions and inspection required to maintain the integrity of the end item because of such omission or deviation.

Depots. Defects shall be processed in accordance with AMCOM-R 702-2 [Aviation Product Verification Audit Requirements].

ENGINEERING CHANGE PROPOSALS.

Engineering change proposals (ECPs) will be submitted using the following reference as guidance: MIL-HDBK-61A [Configuration Management

Guidance], Configuration Management Guidance. Send completed proposals to Commander, U.S. Army Aviation and Missile Command, ATTN: AMSAM- RD-SE-TD-CM, Redstone Arsenal, AL 35898-5000. A reply will be furnished to you.

27800100

Figure 1-1. Pump Assembly Part Nos. PV3-075-20 (145HS100-3) and PV3-075-20A (145HS100-5)

Page 4 of 104; printed on: 30 May 2017 14:41:50 a.

(1)

(2)

(3) b.

1-5.

27800200

DRIVE

SHAFT

PISTON

PISTON

SHOE

RETAINER

SHOE

BEARING

PLATE

SPRING

RETURN

ASSEMBLY

YOKE

PISTON SHOE

HOLDDOW N PLATE

CYLINDER

BLOCK

ACTUATOR

PISTON

VALVE

PLATE

Figure 1-2. Operational Cross-Section

SECTION II. DESCRIPTION, DATA PLATES, AND TABULATED DATA

DESCRIPTION.

General. The pump assembly (Figure 1-1) is used to power a hydraulic system for the operation of hydraulically actuated devices. It delivers a non-pulsating flow of fluid in varying volume as required for operation of equipment in the system. Control of pump operation to meet the demands of the hydraulic system is provided by an integral, automatic pressure control. Since internal parts depend on the hydraulic fluid for lubrication, it is important that the pump housing be completely filled with hydraulic fluid before starting.

Operation. Refer to Figure 1-2.

As the drive shaft rotates, it causes the pistons to reciprocate within the cylinder block bores. The piston shoes are held against a bearing surface by compression force during the discharge stroke and by the shoe hold down plate and retainer during the intake stroke. The bearing surface is held at an angle to the drive shaft axis of rotation by the yoke.

As shown on Figure 1-3, during the intake stroke, each piston shoe follows the shoe bearing plate away from the valve plate. The piston is withdrawn from the cylinder block and fluid is drawn into the cylinder block bore. Further rotation of the drive shaft causes the piston to follow the shoe bearing plate toward the valve plate, producing the discharge stroke. Fluid is then expelled from the cylinder block bore through the outlet port of the valve plate.

As shown on Figure 1-4, piston stroke is controlled by the yoke angle, which is in turn regulated by the compensator valve.

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27800300

STROKE

DRIVE

SHAFT

YOKE

PISTON

CYLINDER

BLOCK

VALVE

PLATE

Figure 1-3. Piston Action

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(4)

(5)

27800400

MAXIMUM

PUMPING

ANGLE

AXIS

OF

ROTATION

MINIMUM

STROKE

POSITION

Figure 1-4. Yoke Function

Operation of the compensator valve is shown on Figure 1-5. With no load on the pump the yoke will be at maximum angle. As load increases, outlet pressure Ps increases. When Ps is sufficient to overcome the force of the compensator spring, the compensator valve spool moves downward, metering increasing control pressure Pc to the yoke actuating piston. This causes the yoke angle to decrease.

If the pump load is decreased, outlet pressure Ps decreases. This allows the compensator spool to be displaced upward by the spring, opening the yoke actuating piston to case pressure, thus reducing control pressure Pc. The yoke actuating spring will then cause the yoke angle to increase.

Page 7 of 104; printed on: 30 May 2017 14:41:50 b.

c.

1-6.

27800500

OUTLET

COMPENSATOR

VALVE

TO

TANK

P

CASE

PUMP

YOKE

DRIVE

SHAFT

YOKE

ACTUATING

CYLINDER

PC

PRESSURE

ADJUSTMENT

INLET

LOW PRESSURE (PI)

HIGH PRESSURE (PS)

COMPENSATOR

VALVE SPRING

Figure 1-5. Compensator Operation

DATA PLATES.

NOTE

To indicate a salvaged or recapitalized/overhauled item, the suffix letter “D” may have been added to the Variable Displacement Axial Piston Pump Assembly part number on the item's data plate in human-readable and/or machine-readable information. Upon completion of the M&O event being accomplished IAW this document, the Variable Displacement Axial Piston Pump Assembly part number on the outgoing IUID data plate shall not include the “D” suffix in either human-readable information or machine-readable information.

Original Identification Data Plate (see Figure 1-6). The original identification data plate is located on the Variable Displacement Axial Piston

Pump Assembly. The original identification data may contain some or all of the following in Human Readable Information (HRI): the manufacturer's identity code, component name, serial number, stock number, part number and contract number. The original identification data plate does not contain 2-D Machine Readable Information (MRI).

Opportunistic Parts Marking (OPM) IUID Label(s) (see Figure 1-7). In addition to the original identification data plate, some Variable Displacement Axial Piston Pump Assemblies may have one or two OPM IUID Labels located in the vicinity of the original nameplate. One label contains an ECC 200 compliant 2-D data matrix encoded with a Unique Item Identifier (UII) that is constructed/formatted IAW DoD Guide

[Guidelines for Registering Government Serialization, Type Designation and Ownership of Major End Items, Assemblies and Subassemblies and Capital Equipment] to Uniquely Identifying Items and MIL-STD-130 [Department of Defense Standard Practice Identification Marking of U.S. Military Property]. If present, the second label contains an ECC 200 compliant 2-D data matrix encoded with the Boeing part number visible on the component at the time the OPM IUID Label was applied.

Item Unique Identification (IUID) Data Plate(s) (see Figure 1-6). The IUID data plate has two ECC 200 compliant 2-D data matrices. One 2-D data matrix is encoded with a UII that is constructed/formatted IAW DoD Guide [Guidelines for Registering Government Serialization, Type

Designation and Ownership of Major End Items, Assemblies and Subassemblies and Capital Equipment] to Uniquely Identifying Items and MIL-STD-130 [Department of Defense Standard Practice Identification Marking of U.S. Military Property]. The other 2-D data matrix is encodedPage 8 of 104; printed on: 30 May 2017 14:41:50

(2)

(3)

(4)

(a)

(b)

(c)

(1) d.

with the component's current Boeing part number. In addition to the 2-D data matrices, the IUID data plate contains HRI which corresponds to the MRI, as well as some or all of the HRI that was originally present on the component (see paragraph 1-6.a.)

Figure 1-6, Sheet 2 of 4, shows the possible IUID data plate(s) options for this component. Option A represents an IUID data plate format for components originally UID-marked during production. Option B and C represents an IUID data plate(s) format for components originally UID-marked post-production in the field or during a maintenance event (commonly referred to as legacy components).

Serial numbers shall not be altered/changed in any way. To accommodate any requirement to display an inspection/procedure/configuration code, a Maintenance Inspection Indicator (MII) field shall be added to the IUID data plate as depicted in Figure 1-6, Sheet 2 of 4, as applicable.

If during PSA, it is determined that the serial number of the Variable Displacement Axial Piston Pump Assembly is not appended with an inspection/procedure/configuration code, but a code is required during the M&O process, the code shall only be displayed on the IUID data plate as HRI in the MII field (e.g. MII: A). If multiple inspection/procedure/configuration codes are required, the codes shall be added to the MII field (not the serial number) as HRI, with each code separated by a dash (e.g. MII: A-XX-XX-X).

Historical records shall be updated to document the change. When using DA Form 2410 [Component Removal and Repair/Overhaul Log] electronic-system, the applicable code(s) shall be entered in the "MII" field; using the paper system the code(s) shall be entered in the "REMARKS" field (e.g., "MII: A" or "MII: A-X-XX-XX-X" for multiple codes).

The IUID data plate is fabricated of aluminum sheet that meets the physical characteristics per MIL-DTL-15024 [Detail

Specification, Plates, Tags and Bands for Identification of Equipment]. The MRI and HRI shall be marked on the IUID data plate using a Laser Etch (see Table 2-2 [Inspection and Test Equipment]), Metal Photographic Process or equivalent. Both the format of the IUID data plate and its location on the Variable Displacement Axial Piston Pump Assembly are depicted in Figure 1-6. Refer to paragraph 1-6.d for fabrication of IUID data plate.

Fabrication of IUID Data Plates (Figure 1-6).

NOTE

Prior to fabrication of the IUID data plate, the DoD IUID Registry shall be queried per paragraph 3-7 [DETERMINE EXISTENCE OF

UNIQUE ITEM IDENTIFIER (UII).].

NOTE

The UII shall be formatted/constructed IAW DoD Guide [Guidelines for Registering Government Serialization, Type Designation and

Ownership of Major End Items, Assemblies and Subassemblies and Capital Equipment] to Uniquely Identifying Items and MIL-STD-

130 [Department of Defense Standard Practice Identification Marking of U.S. Military Property]. The UII shall be registered in the DoD IUID Registry.

If the Variable Displacement Axial Piston Pump Assembly is not registered in the DoD IUID Registry as determined by paragraph

3-7 [DETERMINE EXISTENCE OF UNIQUE ITEM IDENTIFIER (UII).] (regardless of how the component is marked), and/or the UII data and component data does not match that in the DoD IUID Registry record, an IUID data plate shall be fabricated in the format of Option B, Figure 1-6, Sheet 3 of 4. OPM IUID Labels, if applicable, shall be removed from the component, however they may be kept with the component’s documentation for reference only.

A Construct 1 UII shall be encoded into an ECC 200 compliant 2-D data matrix. The CAGE and Unique Component

Number (UCN) shall be acquired from AMCOM’s The Army Maintenance Management System – Aviation (TAMMS- A/MCDS), Unique Identification (UID) database at https://tamms-a.redstone.army.mil (Appendix A, Websites: [DPAP UID:

Defense Procurement and Acquisition Policy http://www.acq.osd.mil/dpap/pdi/uid/data_submission_information.html

WAWF: Wide Area Work Flow e-Business Suite https://wawf.eb.mil/ TAMMS-A/MCDS: The Army Maintenance

Management System – Aviation/Maintenance Consolidated Database System https://tamms-a.redstone.army.mil]). The Text Element Identifiers (TEIs) SPL and UCN shall be used as the data qualifiers. The component’s manufacturer serial number as found at PSA (minus any maintenance inspection codes) shall not be used to develop the UII, but shall reside as HRI on the IUID data plate (Reference Figure 1-6, Sheet 3 of 4 for SPL and UCN configuration).

The second ECC 200 compliant 2-D data matrix shall be encoded with the current Boeing part number using the TEI

PNR (current Part Number) as the data qualifier. The PNR is the component’s Boeing part number upon completion of the M&O event.

NOTE

For components being marked by a Government Depot facility, registration shall occur prior to the component leaving the facility. For components being marked by other M&O facilities, registration shall occur upon final delivery/DD250.

The component shall be registered in the DoD IUID Registry via the Wide Area Work Flow (WAWF) (Appendix A,Page 9 of 104; printed on: 30 May 2017 14:41:50

(a)

(b)

(2)

(a)

(b)

(3)

(4)

(5)

Websites: [DPAP UID: Defense Procurement and Acquisition Policy http://www.acq.osd.mil/dpap/pdi/uid/data_submission_information.html WAWF: Wide Area Work Flow e-Business Suite https://wawf.eb.mil/ TAMMS-A/MCDS: The Army Maintenance Management System – Aviation/Maintenance Consolidated

Database System https://tamms-a.redstone.army.mil]) in accordance with the data submission procedures at http://www.acq.osd.mil/dpap/pdi/uid/data_submission_information.html. Additionally, the following shall be recorded in the "Mark" section of the DoD IUID Registry record in accordance with "Guidelines for Registering Government

Serialization, Type Designation and Ownership of Major End Items, Assemblies and Sub-assemblies and Capital

Equipment”:

Recorded as SET 1:

1. Manufacturer Serial Number (minus any spaces).

2. National Stock Number (with dashes).

3. Type Designation “CH-47” (with the dash and capital letters).

4. Service/Agency/Command “USARMY” (no spaces, in all capital letters).

5. UII.

Recorded as SET 2:

Component Boeing Part Number and Boeing CAGE Code (if present on the component in HRI).

Recorded as SET 3 (If applicable):

Component Manufacturer Part Number and Manufacturer CAGE Code (if present on the component in HRI).

If the Variable Displacement Axial Piston Pump Assembly has an original identification data plate, is registered in the DoD IUID

Registry (whether or not OPM IUID Label(s) are present), and the registry record matches data on the component (see paragraph 3-7 [DETERMINE EXISTENCE OF UNIQUE ITEM IDENTIFIER (UII).]), an IUID data plate (see paragraph 1-6.c) shall be fabricated in the format of Option B or C, Figure 1-6, Sheets 3 and 4 of 4, using the data as found in the DoD IUID Registry record. OPM IUID

Labels, if applicable, shall be removed from the component, however they may be kept with the component’s documentation for reference only.

The recorded UII (see paragraph 3-7 [DETERMINE EXISTENCE OF UNIQUE ITEM IDENTIFIER (UII).]) shall be encoded into an ECC 200 compliant 2-D data matrix. M&O of the component shall not change the UII. The component's manufacturer serial number (minus any maintenance inspection codes) as found at PSA shall reside as HRI on the

IUID data plate.

The second 2-D data matrix shall be encoded per paragraph 1-6.(b).

If the Variable Displacement Axial Piston Pump Assembly has a compliant IUID data plate, and the registry record data matches data on the component (see paragraph 3-7 [DETERMINE EXISTENCE OF UNIQUE ITEM IDENTIFIER (UII).]), but the IUID data plate must be replaced due to damage and/or change to component data (e.g., part number roll, additional inspection code required, etc.), a replacement IUID data plate (see paragraph 1-6.c) shall be fabricated in the format of Figure 1-6, Option A, B or C, whichever is applicable. The newly fabricated IUID data plate shall replicate the originally installed IUID data plate with the exception of any data that may have changed as a result of the M&O event.

The recorded UII (see paragraph 3-7 [DETERMINE EXISTENCE OF UNIQUE ITEM IDENTIFIER (UII).]) shall be encoded into an ECC 200 compliant 2-D data matrix. M&O of the component shall not change the UII. The component’s manufacturer serial number (minus any maintenance inspection codes) as found by PSA shall reside as HRI on the

IUID data plate.

The second 2-D data matrix shall be encoded per paragraph 1-6.(b).

NOTE

The verification for minimum print quality grade applies to component compliant IUID data plates that have been removed and will be reapplied. For components having an compliant IUID data plate that is installed (is not being removed during the M&O event), the IUID data plate can remain on the component provided the 2-D data matrix passes a readability check per paragraph 1-6.(5).

If the Variable Displacement Axial Piston Pump Assembly has a compliant IUID data plate, is registered in the DoD IUID Registry and the registry record matches data on the component (see paragraph 3-7 [DETERMINE EXISTENCE OF UNIQUE ITEM

IDENTIFIER (UII).]), the IUID data plate is undamaged, and no data changes are required, the IUID data plate can be reapplied to the component on which it was applied at PSA, provided the MRI meets the verification requirement for minimum print quality grade per MIL-STD-130 [Department of Defense Standard Practice Identification Marking of U.S. Military Property]. As an exception, the grading requirements for verification of laser etched black anodized aluminum plates can be per Table 1-1 [Verification

Requirements]. If the 2-D data matrices do not meet the minimum grade requirements, a replacement IUID data plate shall be fabricated 1-6.d.

After fabricating an IUID data plate, use a data matrix grader/verifier (Table 2-2 [Inspection and Test Equipment]) to verify that the 2-

D data matrices have a minimum print quality grade per MIL-STD-130 [Department of Defense Standard Practice Identification Marking of U.S. Military Property]. Validate that data encoded in the 2-D data matrix matches HRI. Repeat the applicable marking process until the minimum print quality grade has been achieved. As an exception, the grading requirements for verification of laser etched black anodized aluminum plates can be per Table 1-1 [Verification Requirements].

Page 10 of 104; printed on: 30 May 2017 14:41:50

(a)

(c)

(6)

(a)

(b)

(7)

(a)

(8)

NOTE

If applying overcoat to the IUID data plates prior to installation, refer to paragraph 1-6.(7).

NOTE

Quality control shall inspect the IUID data plates to ensure proper application and that the HRI and MRI match the previously recorded data for that component.

Prior to application, ensure that the IUID data plate data is correct for the component to which it will be applied. Apply the IUID data plate to the Variable Displacement Axial Piston Pump Assembly as follows:

WARNING

ISOPROPYL ALCOHOL, TT-I-735

Isopropyl alcohol is flammable and toxic to eyes, skin, and respiratory tract. Wear protective gloves and goggles/face shield.

Avoid repeated or prolonged contact. Use only in well ventilated areas (or use approved respirator as determined by local safety/industrial hygiene personnel). Keep away from open flames, sparks, or other sources of ignition.

Clean the IUID data plate and application area on the Variable Displacement Axial Piston Pump Assembly as required using cloth (Item 5, Appendix C) moistened with isopropyl alcohol (Item 26, Appendix C).

WARNING

ADHESIVE, EC2216 OR EA9394

Adhesive is toxic. It can irritate skin and cause burns. Avoid contact with skin, eyes, and clothing. In case of contact, immediately flush skin or eyes with water for at least 15 minutes. Get medical attention for eyes.

Apply a thin continuous coat of the adhesive (Item 27 or 28, Appendix C) to the faying surfaces of the IUID data plate.

Attach the IUID data plate to location by applying firm uniform pressure ensuring there are no voids in the bonding area.

Ensure there is a fillet of adhesive (Item 27 or 28, Appendix C) around the edge of the IUID data plate (see Figure 1-8).

Wipe off excess adhesive before it has cured, using cloth (Item 5, Appendix C) moistened with isopropyl alcohol (Item 26, Appendix C). Do not allow the isopropyl alcohol to flow into the bond line.

Apply overcoat protection as follows:

WARNING

OVERCOAT, 683-3-2 OR 683-3-20

Overcoat is flammable and poisonous. It can irritate skin and eyes. Avoid inhaling. Use only with adequate ventilation. Avoid contact with skin, eyes, or clothing. In case of eye contact, immediately flush with water for at least 15 minutes and get medical attention. For skin, wash thoroughly with soap and water. If difficulty breathing is experienced, leave area and obtain fresh air. If continued difficulty is experienced, get medical attention. If ingested, do not induce vomiting, get medical attention immediately.

In accordance with manufacturer's instructions thoroughly blend Base 683-3-2 (Item 29, Appendix C) or Base 683-3-20 (Item 30, Appendix C) and Catalyst X-310A. To apply this overcoat, allow all other sealants to dry tack free if applicable before overcoating.

Apply one smooth continuous coat with a foam brush (Item 31, Appendix C).

After application of the IUID data plate to the component, and upon minimum cure, perform the following:

Repeat the verification process (paragraph 1-6.(5)) when possible.

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(2) e.

NOTE

If IUID data plate can be verified while applied to the Variable Displacement Hydraulic Pump, then the readability check is not required. If verification cannot be performed while applied to the Variable Displacement Hydraulic

Pump, then the readability check is required.

Use a data matrix reader (Table 2-2 [Inspection and Test Equipment]) to check the readability of the 2-D data matrices on the IUID data plate by scanning 4 times. The average time to decode any 3 scans shall be 5 seconds or less. If the IUID data plate do not meet the readability requirement, replacement IUID data plate shall be fabricated (paragraph 1- 6.d).

WARNING

ADHESIVE, MMM-A-1617

Adhesive is combustible, reactive with strong oxidizers, and toxic to eyes, skin, and respiratory tract. Wear protective gloves and goggles/face shield. Avoid repeated or prolonged contact. Use only in well-ventilated areas or use approved respirator as determined by local safety/industrial hygiene personnel. Keep away from open flames or other sources of ignition.

NOTE

When converting PV3-075-20 (145HS100-3) pumps to PV3-075-20A (145HS100-5) revise Model No. to read

PV3-075-20A, Vendor P/N to read 3030434-001, Part No. to read 145HS100-5 and NSN to read 1650-01-516- 6740.

Overhaul Data Plate. This plate is installed at first overhaul, and replaced at subsequent overhaul. The overhaul plate is stamped with the overhaul agency code symbol, modification number, contract number, date of overhaul or modification, overhaul month/year, and part number.

When sufficient space is not available on existing data plate to add information, the plate shall be replaced on all pertinent data transferred to the new plate. Data shall not be stamped on any part, assembly, or item of equipment. Stamping shall be done using characters 1/8 inch high. A two-digit number shall identify the month and year. If a data plate is not available, fabricate one from 0.006 inch thick soft aluminum plate (item 13, Appendix C), 1 inch wide by 2 inches long. Fabricated plate is to be attached with adhesive (item 2, Appendix C). Attach regular replacement data plates as follows:

CAUTION

Stamping directly on the surface, or installed overhaul data plate, of any assembly or item of equipment is strictly prohibited.

Stamp required information on overhaul data plate.

WARNING

DEGREASING SOLVENT, MIL-PRF-680, TYPE II

Degreasing Solvent is combustible and toxic to eyes, skin, and respiratory tract. Wear protective gloves and goggles/face shield. Avoid repeated or prolonged contact. Use only in well-ventilated areas or use approved respirator as determined by local safety/industrial hygiene personnel. Keep away from open flames or other sources of ignition.

Clean area above or adjacent to identification plate on housing. Use cloths (item 5, Appendix C), moistened with solvent (item 19, Appendix C). Refer to Figure 1-6.

NOTEPage 12 of 104; printed on: 30 May 2017 14:41:50

(3)

(4)

(5)

The adhesive surface of the overhaul data plate must be kept clean and free of moisture.

Peel the paper backing from the overhaul data plate.

Immediately apply the overhaul data plate to the cleaned area. Press plate firmly in position.

WARNING

LACQUER, MIL-PRF-81352

Lacquer is combustible, reactive with strong oxidizers, and toxic to eyes, skin, and respiratory tract. Wear protective gloves and goggles/face shield. Avoid repeated or prolonged contact. Use only in well-ventilated areas or use approved respirator as determined by local safety/industrial hygiene personnel. Keep away from open flame or other sources of ignition.

Seal the edges of the overhaul data plate with three coats of clear lacquer (item 9, Appendix C).

27800600

OVERHAUL DATA

TIMEDATEBY

VERTOL DIVISION

BOEING

OVERALL DATA PLATE BACM10L1DE4

PUMP HYD VAR DEL FLUID GPM

PSIU.S. RPM

INSP

VENDOR P/N

NSN

SPEC NO

MODEL NO

PART NO

SER NO

ROTATION

PLATE

FILL

PLATE

FILL

EATON PUMP, HYD. VAREaton Aerospace

MFR XXXXX

SER XXXXXXXX

EATON

PUMP, HYD. VAREaton Aerospace

Hydraulic Systems Divisions MODEL NO. PV3-075-20A

P/N 3030434-001

GPM 16.35

PSI 3060

CONTRACT NO.

SPEC NO. 145HS100

FLUID 83282-A

RPM 5358

PNR 145HS100-5

77272 SOCN 145HS100-X

NSN

Eaton Aerospace, Jackson, M S, U.S.A.

ORIGINAL IDENTIFICATION DATA PLATE

OR

IUID DATA PLATE(S)

(SEE FIGURE 1-6, SHEET 2 OF 4)

NOTE:

IN ADDITION TO THE ORIGINAL NAMEPLATE, SOME

ITEMS MAY HAVE OPM IUID LABELS (FIGURE 1-7)

LOCATED ADJACENT TO, OR IN THE VICINITY OF

THE ORIGINAL NAMEPLATE.

Figure 1-6.

(Sheet 1 of 4)

Page 13 of 104; printed on: 30 May 2017 14:41:50

27807600

EATON

PUMP, HYD. VAREaton Aerospace

Hydraulic Systems Divisions MODEL NO. PV3-075-20A

P/N 3030434-001

GPM 16.35

PSI 3060

CONTRACT NO.

SPEC NO. 145HS100

FLUID 83282-A

RPM 5358

PNR 145HS100-5

77272 SOCN 145HS100-X

NSN

Eaton Aerospace, Jackson, M S, U.S.A.

OPTION A

EATON PUMP, HYD. VAREaton Aerospace

SPL XXXXX

UCN XXXXXXXXX

S/N

MII

EATON

PUMP, HYD. VAREaton Aerospace

Hydraulic Systems Divisions MODEL NO. PV3-075-20A

P/N 3030434-001

GPM 16.35

PSI 3060

CONTRACT NO.

SPEC NO. 145HS100

FLUID 83282-A

RPM 5358

PNR 145HS100-5

77272 SOCN 145HS100-X

NSN

Eaton Aerospace, Jackson, M S, U.S.A.

OPTION B

NOTES:

1. IF THE ITEM ARRIVES WITHOUT A REGISTERED UII, AN IUID DATA PLATE SHALL BE FABRICATED IN

THE FORMAT OF OPTION B AND INSTALLED IN PLACE OF THE ORIGINAL IDENTIFICATION DATA PLATE.

2. IF THE ITEM ARRIVES WITH ORIGINAL IDENTIFICATION DATA PLATE AND HAS A DOD

REGISTERED UII, THE ORIGINAL IDENTIFICATION DATA PLATE AND ANY OPM IUID LABELS SHALL BE

REPLACED WITH AN IUID DATA PLATE IN THE FORMAT OF OPTION B OR C. THE UII SHALL BE REPLICATED

USING THE DOD IUID REGISTRY DATA. NO OPM IUID LABELS SHALL REMAIN ON THE PART.

3. IF THE ITEM ARRIVES WITH A REGISTERED UII ON AN IUID DATA PLATE (OPTION A, B, OR C), IT

SHALL BE REPLICATED (TO CONFIGURATION/FORMAT FOUND AT PSA) WHEN REPLACEMENT IS

NECESSARY DUE TO DAMAGE AND/OR CHANGE TO COMPONENT DATA (E.G., PART NUMBER ROLL,

ADDITIONAL INSPECTION CODE REQUIRED, ETC...). OPTION A MAY ARRIVE ON THE ITEM WITHOUT

AN MII FIELD; PLACE AN MII FIELD ON THE REPLICATED/REPLACEMENT IUID DATA PLATE AS SHOWN.

EATON PUMP, HYD. VAREaton Aerospace

(17V) XXXXX

(1P) XXXXXXXX

(S) XXXXXX

MII

EATON

PUMP, HYD. VAREaton Aerospace

Hydraulic Systems Divisions MODEL NO. PV3-075-20A

P/N 3030434-001

GPM 16.35

PSI 3060

CONTRACT NO.

SPEC NO. 145HS100

FLUID 83282-A

RPM 5358

PNR 145HS100-5

77272 SOCN 145HS100-X

NSN

Eaton Aerospace, Jackson, M S, U.S.A.

OPTION C

EATON PUMP, HYD. VAREaton Aerospace

MFR XXXXX

SER XXXXXXXXX

MII

Figure 1-6.

(Sheet 2 of 4)

Page 14 of 104; printed on: 30 May 2017 14:41:50

27807700

PUMP, HYD. VAREaton Aerospace

Hydraulic Systems Divisions MODEL NO. PV3-075-20A

P/N 3030434-001

GPM 16.35

PSI 3060

CONTRACT NO.

SPEC NO. 145HS100

FLUID 83282-A

RPM 5358

PNR 145HS100-5

77272 SOCN 145HS100-X

NSN

Eaton Aerospace, Jackson, M S, U.S.A.

EATON PUMP, HYD. VAREaton Aerospace

MFR XXXXX

SER XXXXXXXXX

OPTION A (LOCAL FABRICATION)

MII

EATON

PUMP, HYD. VAREaton Aerospace

Hydraulic Systems Divisions MODEL NO. PV3-075-20A

P/N 3030434-001

GPM 16.35

PSI 3060

CONTRACT NO.

SPEC NO. 145HS100

FLUID 83282-A

RPM 5358

PNR 145HS100-5

77272 SOCN 145HS100-X

NSN

Eaton Aerospace, Jackson, M S, U.S.A.

EATON PUMP, HYD. VAREaton Aerospace

SPL XXXXX

UCN XXXXXXXXX

S/N

MII

0.125 R 4PLS

2.00

0.60

7 8

7 9

0.125 R 4PLS

OPTION B (LOCAL FABRICATION)

0.125 R 4PLS

2.00

0.60

7 10

0.125 R 4PLS

11.

12.

1.

2.

3.

4.

NOTES:

ALL DIMENSIONS IN INCHES.

DRAWING NOT TO SCALE. USE LARGEST FONT SIZE THAT FITS FIELD AREA.

IUID MARKING PER MIL-STD-130.

LASER MARK 0.001 DEEP MAX ON BLACK ANODIZE PER MIL-A-8625.

MATERIAL: ALUMINUM ALLOY 1100-O, PER ASTM B209, STOCK 0.032 INCH ±0.0015 INCH THICK.

ALL TEXT TO BE UPPER GOTHIC.

QUIET ZONE (FREE SPACE) AROUND 2D MATRIX CODE SHALL BE 0.050 MINIMUM IN ALL

2-D DATA MATRIX CODE TO CONTAIN THE BOEING CURRENT PART NUMBER (PNR) AFTER AN M&O EVENT.

2-D DATA MATRIX CODE TO CONTAIN THE MFR XXXXX (MANUFACTURER'S CAGE CODE), AND SER

2-D DATA MATRIX CODE TO CONTAIN THE SPL XXXXX (CAGE CODE OF THE ENTITY SUPPLYING

XXXXXX (MANUFACTURER'S UNIQUE SERIAL NUMBER).

THE UII) AND UCN XXXXXXX (UNIQUE COMPONENT NUMBER OF THE ENTITY SUPPLYING THE UII).

FOR METAL PHOTOGRAPHIC PROCESS: USE PHOTOSENSITIVE ANODIZED ALUMINUM

PER GG-P-455, TYPE I, CLASS 1, GRADE A.

OVERCOAT (683-3-2 OR 683-3-20) MAY BE APPLIED PRIOR TO INSTALLATION, REFER TO

PARAGRAPH 1-6.d(7).

5.

6.

DIRECTIONS.

2.00

0.60

2.00

0.60

Figure 1-6.

(Sheet 3 of 4)

Page 15 of 104; printed on: 30 May 2017 14:41:50

27807800

PUMP, HYD. VAREaton Aerospace

Hydraulic Systems Divisions MODEL NO. PV3-075-20A

P/N 3030434-001

GPM 16.35

PSI 3060

CONTRACT NO.

SPEC NO. 145HS100

FLUID 83282-A

RPM 5358

(30P) 145HS100-5

77272 SOCN 145HS100-X

NSN

Eaton Aerospace, Jackson, MS, U.S.A.

EATON PUMP, HYD. VAREaton Aerospace

(17V) XXXXX

(1P) XXXXXXXXX

(S)

MII

OPTION C (LOCAL FABRICATION)

2.00

0.60

7 9

0.125 R 4PLS

10.

11.

1.

2.

3.

4.

NOTES:

ALL DIMENSIONS IN INCHES.

DRAW ING NOT TO SCALE. USE LARGEST FONT SIZE THAT FITS FIELD AREA.

IUID MARKING PER MIL-STD-130.

LASER MARK 0.001 DEEP MAX ON BLACK ANODIZE PER MIL-A-8625.

MATERIAL: ALUMINUM ALLOY 1100-O, PER ASTM B209, STOCK 0.032 INCH ±0.0015 INCH THICK.

ALL TEXT TO BE UPPER GOTHIC.

QUIET ZONE (FREE SPACE) AROUND 2D MATRIX CODE SHALL BE 0.050 MINIMUM IN ALL

2-D DATA MATRIX ENCODE W ITH BOEING'S PART NUMBER USING DI (30P) AFTER AN M&O EVENT.

2-D DATA MATRIX ENCODE W ITH CONSTRUCT 2 UII USING DIs, (17V) MANUFACTURER'S CAGE, (1P) ORIGINAL PART NUMBER AND (S) MANUFACTURER'S SERIAL NUMBER.

FOR METAL PHOTOGRAPHIC PROCESS: USE PHOTOSENSITIVE ANODIZED ALUMINUM

PER GG-P-455, TYPE I, CLASS 1, GRADE A.

OVERCOAT (683-3-2 OR 683-3-20) MAY BE APPLIED PRIOR TO INSTALLATION, REFER TO

PARAGRAPH 1-6.d(7).

5.

6.

DIRECTIONS.

2.00

0.60

0.125 R 4PLS

Figure 1-6.

(Sheet 4 of 4)

Page 16 of 104; printed on: 30 May 2017 14:41:50

27807900

SPL 3WUH0

U C

N X X X X X X

(S) SN:

(1P) P/N:

(17V) EID:

IUID POSTAGE

STAMP (1-PART)

Figure 1-7. Example of OPM IUID Label

Page 17 of 104; printed on: 30 May 2017 14:41:50

1-7.

27808000

ADHESIVE

IUID DATA PLATE

COMPONENT

ADHESIVE

Figure 1-8. Adhesive Cross Section

Table 1-1. Verification Requirements

PARAMETERS LASER ETCH ANODIZE

Exceptions to ISO/IEC 15415:

Symbol Contrast ≥ 25%

Modulation Grade A¹

All Other Characteristics Grade B or better

Exceptions to SAE AS9132:

Symbol Contrast ≥ 25%

Module Fill 85% to 115%

Angular Deviation < 2°

Metallurgical Eval - Destruct Test None

¹ Modulation to be Grade A for uncoated labels. May be Grade B for clear coated labels.

TABULATED DATA.

The major characteristics of the variable displacement axial piston pump assembly are listed in Table 1-2 [Tabulated Data].

Table 1-2. Tabulated Data

CHARACTERISTIC DESCRIPTION

Mounting Position Unrestricted, except that unit must be mounted so that housing remains filled with oil during all operations.

Rotation Counterclockwise as viewed from the coupling shaft end, not reversible.

Number of Pistons 9Page 18 of 104; printed on: 30 May 2017 14:41:50

2-1.

b.

2-2.

Theoretical displacement (maximum yoke angle) 0.75 cubic inch/revolution

Fluid MIL-PRF-83282 [Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, Metric, NATO Code Number H-537]

Flow at 5358 rpm 16.35 gpm

Rated Speed 5358 rpm

Pressure: Maximum recommended for continuous duty 3050 psig

Pressure: Rise as displacement is reduced from maximum to zero

(approximate)

150 psig

Connections:

Outlet 0.8750-14 thread (Conforms to SAE-AS5202 [Port Or Fitting End, Internal

Straight Thread, Design Standard])

Inlet 1.3125-12 thread (Conforms to SAE-AS5202 [Port Or Fitting End, Internal Straight Thread, Design Standard])

Case drain 0.5625-18 thread (Conforms to SAE-AS5202 [Port Or Fitting End, Internal

Straight Thread, Design Standard])

Seep drain 0.4375-20 thread (Conforms to SAE-AS5202 [Port Or Fitting End, Internal Straight Thread, Design Standard])

Coupling shaft 16 teeth, 20/40 pitch, 0.800 pitch diameter.

Weight dry (approximate) 10.3 pounds

CHAPTER 2

REQUIREMENTS

SECTION I. GENERAL

FACILITIES.

The Depot/Contractor’s facilities shall be equipped to perform all phases of overhaul, test and modification as directed in the DMWR. These facilities shall include, but are not limited to, machine shop, cleaning, plating, and testing. Facilities shall have such environmental control as to provide greatest possible care to prevent damage and deterioration to Government equipment during storage, movement, unpacking, overhaul, and repair operations, testing, and to prevent damage to equipment after Government acceptance.

SUPPORT ITEMS.

Special Tools and Equipment. Special tools and equipment are listed in Table 2-1 [Special Tools and Equipment or Equivalent]. Possession of all tools and equipment listed is not to be construed as mandatory when the contractor may have similar tools and equipment at his facility or can locally purchase or manufacture adequate tools and equipment to accomplish all job functions in a competent and efficient manner.

Table 2-1. Special Tools and Equipment or Equivalent

Nomenclature NSN and/or Part Number Mfg. No.

Powerarm Adapter T-181246 62983

Gang Lap Fixture T-304013 62983

Bearing Removal Plate T-304014 62983

Shaft Driver T-304015 62983

Pilot Valve Sleeve Pliers T-304124 62983

End Play Checking Tool T-304290 62983

Spring Compressor T-401872 62983

Bearing Puller T-416247 62983

Shaft Seal Guide T-416248 62983

Holding Fixture T-416375 62983

Bearing Driver T-416376 62983

Holding Clamp T-416496 62983

Bearing Puller T-434812 62983

Assembly Tool A-0065-T 04171

Compensator Tool (Removal) T472800 62983

Compensator Tool (Installation) T472818 62983

Inspection and Test Equipment. Table 2-2 [Inspection and Test Equipment] lists the inspection and test equipment or equivalent to determine conformance of the pump assembly and/or components to the requirements contained in this DMWR. Possession of all equipment listed is not to be construed as mandatory when the contractor may have similar equipment on his facility or can locally purchase or manufacture adequate equipment to accomplish all job functions in a competent and efficient manner.

Table 2-2. Inspection and Test Equipment

Nomenclature NSN and/or Part Number Mfg. No.Page 19 of 104; printed on: 30 May 2017 14:41:50 c.

d.

2-3.

2-4.

2-5.

Flushing set T-233248 62983

Air Gage Master Ring (Low Limit) (Cylinder Block) T-300495 62983

Air Gage Master Ring (High Limit) (Cylinder Block) T-300496 62983

Internal Spline Gage (Drive Shaft) T-304583-1 62983

Internal Spline Gage (Cylinder Block) T-304583-3 62983

Air Gage Spindle (Cylinder Block) T-413039 62983

Air Gage Master Ring (Low Limit) (Housing) TR-4998 62983

Air Gage Master Ring (High Limit) (Housing) T-101719 62983

Air Gage Spindle (Housing) T415094 62983

Epilog, HELIX - 45 watt, CO2 Mini Laser Marking System, or equivalent L24EX-45 1RJS7

Reader, MS-Q Handheld, or equivalent FIS-6100-0011 0F5R7

Verifier, TruCheck 401-R Kit, or equivalent 2537 1SNG2

Mandatory Replacement Parts. Table 2-3 [Mandatory Replacement Parts at Overhaul] lists those parts which must be replaced at each overhaul.

Table 2-3. Mandatory Replacement Parts at Overhaul

Part Number National Stock Number Description Quantity

M83248/1-016 5330-00-166-0992 Packing (3) 1

428141 1650-01-228-7425 Tamper Resistance Cap (5) 1

M83248/1-012 5330-00-166-0980 Packing (9) 1

M83248/1-017 5330-00-166-0993 Packing (13) 1

M83248/1-013 5330-00-166-0986 Packing (18) 2

M83248/2-902 5330-00-167-5174 Packing (21) 1

318616 3110-01-162-0572 Needle Roller Bearing (24) 1

M83248/1-143 5330-00-167-5125 Packing (26) 1

M83248/1-010 5330-00-166-0969 Packing (27) 1

312173 3110-00-462-4190 Pintle Bearing (49) 2

429326 3110-01-214-9198 Shaft Ball Bearing (64) 1

M83248/1-129 5330-00-167-5117 Packing (67) 1

319483 5330-01-021-3454 Molded Rubber Gasket (68) 1

317088 5325-01-022-6972 Grommet, Shaft Seal (58) 1

129-547 None O-Ring (82) 1

026-547 None O-Ring (83) 1

119-547 None O-Ring (86) 1

Repair Parts. Refer to Appendix B.

SECTION II. STANDARDS

QUALITY OF MATERIAL.

Parts and materials used for replacement, repair, and modification of the pump assembly shall meet equipment drawings and specifications unless otherwise specified in this DMWR.

MAN HOUR STANDARDS.

Table 2-4 [Man Hour Standards] is an estimated average of man hours required to perform depot overhaul of the pump assembly.

Table 2-4. Man Hour Standards

Nomenclature Function Hours

Pump Assembly Unpacking 0.5

Pre-shop Analysis 1.0

Disassembly 1.5

Cleaning and Inspection 7.5

Repair 3.0

Assembly 3.0

Testing 8.0

Packaging 1.0

TOTAL 25.5

CRITICAL SAFETY ITEM (CSI) PROGRAM.

This DMWR is not impacted by the Critical Safety Item Program.Page 20 of 104; printed on: 30 May 2017 14:41:50

3-1.

3-2.

3-3.

a.

b.

3-4.

CHAPTER 3

MAINTENANCE, OVERHAUL, AND REPAIR

SECTION I. GENERAL

SCOPE.

This chapter provides instructions for depot level maintenance for the pump assembly. First, pre-shop analysis will be performed. Then the pump assembly will be disassembled and cleaned. Next parts shall be inspected per the OIP. Parts that do not meet OIP requirements shall be repaired/replaced. Finally, the pump assembly is assembled and tested to verify that it is ready in all respects for return to service.

REFERENCES.

References used in this DMWR are listed in Appendix A.

SECTION II. SAFETY

SAFETY PRECAUTIONS.

Personnel doing overhaul shall observe all precautions for their personal safety as specified on the warning page and within the instructions contained in this DMWR.

WARNING

CAUTIONS AND WARNINGS

Observe all cautions and warnings on containers when using volatile or toxic substances. When applicable, wear necessary protective gear while handling these substances, heated or chilled parts, and when using machinery. If substance is flammable or explosive, ENSURE that it and its vapors are kept away from heat, sparks, and flame. ENSURE that firefighting equipment is readily available and in working order prior to use of such substances.

WARNING

CLEANING SOLVENT, MIL-PRF-680, TYPE II

Cleaning solvent is toxic and flammable. To minimize danger to health, use cleaning solvent in a well ventilated area, avoid excessive skin contact of solvent. Do not inhale or breathe solvent fumes. To prevent fires, keep solvent and solvent fumes away from flame and other ignition sources.

CAUTION

Do not immerse electrical parts in solvent; insulation may soak up solvent and retain it for a long time.

SECTION III. PRE-SHOP ANALYSIS

NOTE

Visually inspect each hydraulic pump for a white torque stripe applied to the head andmating surface of all screws Part Number MS16998-44.

There are 13 locations, 8 at the housing-mounting flange interface and 5 at the housing-valve plate interface. The torque stripes identify that a one-time rework procedure requiring the mandatory replacement of these screws was accomplished.

PURPOSE.

The purpose of pre-shop analysis is to determine the reason(s) the component was removed from service and returned to the depot for overhaul and to verify compliance criteria is implemented on all required forms and records for historical data.

A Component Data Form (AMSAM-MMC Form 723, 1 July 06) (Figure 3-1) will be completed for each assembly overhauled. The Component

Data Form is also available electronically on the Internet at https://tammsa.redstone.army.mil. In completing the data form, provide a qualifying statement encompassing the location and discrepancy, defect, or failure observed. Copies of the Component Data Form and DA Form 2410

[Component Removal and Repair/Overhaul Log] will be forwarded to the following organization for each unit processed:

Page 21 of 104; printed on: 30 May 2017 14:41:50

3-5.

a.

b.

c.

3-6.

a.

b.

c.

(1)

(2) d.

3-7.

U.S. Army Aviation and Missile Command Maintenance Information Operations Branch

ATTN: AMSAM-MSI-LM

Redstone Arsenal, AL 35898-5000.

As an alternative to the hard copy Component Data Form an electronic Preshop Analysis Form is available at https://tammsa.redstone.army.mil

TAGS AND FORMS.

Check all tags and forms attached to the pump and/or in the forms receptacle of its container.

Determine reason for removal from service.

Total time on unit and time since new (TSN) or time since overhaul (TSO). Record these times for determination of disposition of finite life limited units.

UNPACKING.

Remove the pump assembly from its respective shipping containers as follows:

Remove nuts, washers, and bolts and open container.

Remove pump from wooden container along with all tags, forms, and records.

Clean the pump, if necessary. Refer to paragraph 3-25 [CLEANING.].

DETERMINE EXISTENCE OF UNIQUE ITEM IDENTIFIER (UII).

The DoD IUID Registry and/or TAMMS-A/MCDS, UID database shall be queried to determine if the component has been assigned a UII.

NOTE

Do not remove IUID data plates unless necessitated by damage, maintenance requirements or…