Attachment 7 -58331-4-100_26129.pdf

CUI

TEST#: ESR#:

WN#: SSP#:

WS#:

SRF-JRMC DET SASEBO TEST MEMO

TITLE

HYDRAULIC SYSTEM COMPONENT

TEST MEMO PREPARATION

PRINT NAME & SIGNATURE PHONE CODE DATE

PREPARED BY

REVIEWED BY

APPROVED BY

SHIP/HULL#

SCOPE

TEST COMPLETION

PRINT NAME & SIGNATURE ORGANIZATION BADGE/RANK DATE

LWC

S246

SRF-JRMC

DET SASEBO

POST-TEST TECHNICAL REVIEW

PRINT NAME & SIGNATURE PHONE CODE DATE

Evaluation: ACCEPTED REJECTED

Action necessary: REPAIR ITEMS RETEST EQUIPMENT RESUBMIT DATA

COMMENTS

SASN-26-S232-0005

SASN-003-26

252-8048

252-8049

252-8045

3/23/26

3/24/26

3/23/26

S246B

S246A

S246CTE

Replacement of hydraulic system component.

589-53-001

58331-4-100_26129

57078-RS01-L009

A. NAKASHIMA

PHILLIPS.SHAUN.P

ARRY.1093485625

Digitally signed by

PHILLIPS.SHAUN.PARRY.1093485625

Date: 2026.03.24 08:12:03 +09'00'

S. IIDA

S. PHILLIPS

NAKASHIMA.ATSUS

HI.1274756299

Digitally signed by

NAKASHIMA.ATSUSHI.1274756299

Date: 2026.03.23 09:09:03 +09'00'

IIDA.SHUNICHI.127

4619127

Digitally signed by

IIDA.SHUNICHI.1274619127

Date: 2026.03.23 11:57:06 +09'00'

NBU-7 / LARC-936

TEST#: 58331-4-100_26129 ESR#: SASN-26-S232-0005

WN#: 57078-RS01-L009 SSP#: SASN-003-26

WS#: 589-53-001

TEST PROCEDURE GENERAL NOTES

1. TEST SEQUENCE: Unless otherwise specified in the test document, this test procedure (TP) shall be completed in provided order.

2. VERIFICATION: The person designated to sign for an action verifies, based on personal observation, objective evidence, or watch stander reports and certifies by signature that the action has been performed in accordance with the specified requirements.

3. USE ORIGINAL DOCUMENTS: All data attached to the Master TP shall have original pen and ink entries on the data sheets (unless otherwise specified in the test procedure.)

4. USE DARK INK: All signature and data shall be in dark, water insoluble ink.

5. CORRECTIONS: When an error was made, it shall be corrected by drawing a single line through the error, recording the correct entry, initialing, dating and printing the name of the person making the correction in accordance with JOINT FLEET MAINTENANCE MANUAL (JFMM), COMUSFLTFORCOMINST 4790.3, VOLUME

V, QUALITY MAINTENANCE.

6. LATEST APPLICABLE REVISION: Use the latest applicable revision of plans, instructions, technical manuals, and other reference materials cited in this test procedure.

7. INSTRUMENT CALIBRATION: All measuring equipment shall be in current calibration as required by

NAVSHIPREPFACINST 4734.1.

8. OPERATION OF COMPONENTS: Only authorized personnel shall operate ship’s permanently installed equipment.

The cognizant Shop shall control and operate their temporary test equipment. Ship’s Force shall operate temporary systems and equipment that are formally turned over to the ship.

9. SAFETY INSTRUCTION: The Test Director is responsible for the safe conduct of this test. The safety precautions of NAVSHIPREPFAC M-5100.8 shall be observed at all times.

10. TEST STOPPAGE: The Test Director shall stop the test once a problem has been found in the system or equipment being tested. S246 Testing Standard Operating Procedure (SOP) shall be used to determine course of action prior to resuming the test procedure.

11. ENERGIZED EQUIPMENT: NSTM 300, para 300-2.4 shall be followed when working on energized equipment.

12. DATA COLLECTION: The test documents may require collection of additional data for which there is no acceptance criteria, provided the data sheet identifies that data is for information only.

13. SUPPLEMENTATION: When supplementation is made, annotate the supplemental information on the page with ‘See Remarks’ followed by a sequential numbering system corresponding in the Remarks section.

14. USE ASTERISK (*): When supplementation, correction and/or signature is made but there is not enough space, annotate using an asterisk (*) followed by sequential number adjacent to the portion then clarify on the same page using the same annotation.

WN#: 57078-RS01-L009 SSP#: SASN-003-26

HYDRAULIC SYSTEM - OPERATIONAL TEST

1. PURPOSE

1-1 The purpose of this test is to certify the satisfactory repair/replacement of hydraulic system components.

2. REFERENCES

2-1 TECHNICAL MANUAL

2-1.1 F9YC0-AM-TMM-010, 020, 030; LIGHTER AMPHIBIOUS RESUPPLY CARGO, FIVE TON (LARC-V A1/A2)

2-2 ESR RESPONSE

2-2.1 LARC876-0018 & LARC876-0020; Hydraulic System Component; replace and flush

2-3 ISEA RESPONSE

2-3.1 LARC Cooling Temperature Questions, 18 February 2026

2-4 JFMM-JOINT FLEET MAINTENANCE MANUAL

2-5 NAVSHIPREPFAC M-5100.8; SAFETY AND HEALTH PROGRAM MANUAL

3. TEST AND SUPPORT EQUIPMENT/MATERIAL

3-1 Craft Gauge / IQAN Display

3-2 Speed Meter

4. GENERAL PRECAUTIONS

4-1 Only those personnel actively engaged in performing or witnessing this test shall be permitted in the testing area.

All specified safety regulations shall be strictly observed.

4-2 To prevent injury or death, ensure that certified test equipment is used during testing.

4-3 Safeguarding of personnel and equipment shall be adhered to at all times.

4-4 Never open the cap on the engine coolant system when the engine is hot (greater than 120°F). The system may be pressurized and contain coolant at temperatures which will cause severe burns.

4-5 Do not move the craft until all ground personnel have cleared the immediate area. Personnel in the surrounding area may be injured or killed if struck by the craft.

4-6 Do not move the craft until all personnel are securely onboard or have cleared the immediate mooring area.

Personnel in the surrounding area may be injured or killed if struck by the craft.

4-7 Personnel onboard the craft should be notified that transition from the land to water is in progress and from water to land is in progress. This notification will allow personnel to prepare for turbulence and the abrupt speed reduction when the front wheels become grounded. Failure to provide notice may result in serious injury or death to onboard personnel.

WN#: 57078-RS01-L009 SSP#: SASN-003-26

5. OPERATIONAL TEST

5-1 PRETEST BRIEFING Conduct a pretest briefing (e.g. safety precaution, station assignments, testing steps) with all involved test personnel.

5-2 AT LAND TEST Conduct the AT LAND TEST under following test conditions. Record result in its corresponding

TEST DATA SHEET

5-2.1 ENGINE RUNNING

(1) Bilge Pumps

a. Flood the bilge area for the pump to be tested until water reaches the bilge pump inlet.

b. Press the manual side of the bilge pump switch.

Acceptance criteria: The bilge pump shall be discharged properly without any leakage.

c. Repeat above step a. and b. for remaining bilge pumps.

(2) Steering

a. Place the craft in LAND MODE/FORWARD to bring the engine to high idle.

b. Turn the steering wheel from full port to full starboard and verify operating condition.

Acceptance criteria: The rudder and wheels turn proportionally with the steering wheel.

There is no steering flow alarm message on the IQAN.

There is no hydraulic oil leakage.

(3) Service Brakes

a. Pump the brake pedal a few times.

Acceptance criteria: An accumulator charging sound will be made after every two or three presses of the brake pedal.

There is no hydraulic oil leakage.

(4) Engine Coolant Fan Drive

a. Let the engine coolant temperature increase to 175°F to start the fan.

b. During fan operation, verify that the fan drive motor functioning properly without excessive vibration or leaks, and ensure that the coolant temperature does not exceed 190°F.

Acceptance criteria: The fan drive motor shall function properly without excessive vibration or leaks, and the coolant temperature shall remain at or below 190°F.

NOTE

IT IS POSSIBLE TO INCREASE THE HYDRAULIC OIL TEMPERATURE BY OPERATE THE HYDRAULIC

OIL HEAT EXCHANGER ISOLATION VALVE AND/OR BYPASS VALVE.

(5) Hydraulic Oil Fan Drive

a. Let the engine coolant temperature increase to 150°F to start the fan (If either the FWD or AFT manifolds reach that temperature).

b. During fan operation, verify that the fan drive motor functions properly without excessive vibration or leaks, and ensure that the coolant temperature does not exceed 160°F.

Acceptance criteria: The fan drive motor shall function properly without excessive vibration or leaks, and the hydraulic oil temperature shall remain at or below 160°F.

WN#: 57078-RS01-L009 SSP#: SASN-003-26

(6) Hydraulic Moisture Sensor

a. Verify that the moisture sensor has been calibrated, and a green LED on the sensor face shows when power is available to the moisture sensor unit.

Acceptance criteria: The moisture sensor has been calibrated, and a green LED on the sensor face is illuminated.

5-2.2 CRAFT DRIVE

(1) Wheel Motor Brakes

a. Place the craft into the LAND MODE/FORWARD or REVERSE, verify that the IQAN screen does not display the warning message of “PARKING BRAKE DRAGGING! DO NOT OPERATE VEHICLE! due to a loss of hydraulic pressure.

Acceptance criteria: The IQAN screen does not display the warning message.

(2) Shift Control Valve

a. Place the craft into the TOW MODE and operate the craft. Verify that the IQAN and shift control solenoid valve shifts wheel motor operates at Low Speed with High Torque.

Acceptance criteria: The wheel motor operates at low speed with high torque.

There is no hydraulic oil leakage.

(3) Main Pumps

a. Place the craft into the LAND MODE FORWARD. Driving the craft 85-90% hand throttle. Verify that the craft speed reaches approximately 25 mph.

Acceptance criteria: The craft speed reaches approximately 25 mph.

There is no hydraulic oil leakage.

(4) Rotary Swivels

a. Place the craft into the LAND MODE FORWARD. Driving the craft 85-90% hand throttle.

b. After driving the craft, inspect for oi leakage.

Acceptance criteria: There is no hydraulic leakage.

5-3 AT SEA TEST

5-3.1 SEA MODE

(1) Propeller Shaft Motor

a. Place the craft into the SEA MODE FORWARD. Driving the craft 85-90% hand throttle. Verify that the craft speed reaches approximately 7.5 knots.

Acceptance criteria: The craft speed reaches approximately 7.5 knots.

The propeller shaft motor works proportionally with the hand throttle.

There is no hydraulic oil leakage.

5-4 LWC and S246 shall sign on the last page of TEST DATA SHEET upon completion of the test.

5-5 Return system/equipment to readiness conditions, as required.

WN#: 57078-RS01-L009 SSP#: SASN-003-26

6. TEST PROCEDURE COMPLETION

6-1 Sign the test procedure coversheet to confirm that the test procedure has been fulfilled and completed and return it to S246 for review and approval.

7. REMARKS

WN#: 57078-RS01-L009 SSP#: SASN-003-26

TEST DATA SHEET

5-2 AT LAND TEST

TEST CONDITION STEP ACCEPTANCE CRITERIA RESULT

5-2.1

ENGINE RUNNING

(1) Bilge Pumps The bilge pump shall be discharged properly without any leakage.

FWD: □ SAT / □ UNSAT

PORT: □ SAT / □ UNSAT

STBD: □ SAT / □ UNSAT

(2) Steering

The rudder and wheels turn proportionally with the steering wheel.

□ SAT / □ UNSAT

There is no steering flow alarm message on the IQAN. □ SAT / □ UNSAT

There is no hydraulic oil leakage. □ SAT / □ UNSAT

(3) Service Brakes

An accumulator charging sound will be made after every two or three presses of the brake pedal.

□ SAT / □ UNSAT

There is no hydraulic oil leakage. □ SAT / □ UNSAT

(4) Engine Coolant Fan Drive The fan drive motor shall be functioning properly without excessive vibration or leaks, and the coolant temperature shall remain at or below 190°F.

Maximum temp: _________°F

□ SAT / □ UNSAT

(5) Hydraulic Oil Fan Drive The fan drive motor shall function properly without excessive vibration or leaks, and the hydraulic oil temperature shall remain at or below 160°F.

Maximum temp: _________°F

□ SAT / □ UNSAT

(6) Hydraulic Moisture Sensor The moisture sensor has been calibrated, and a green LED on the sensor face is illuminated.

□ SAT / □ UNSAT

5-2.2

CRAFT DRIVE

(1) Wheel Motor Brakes The IQAN screen does not display the warning message. □ SAT / □ UNSAT

(2) Shift Control Valve The wheel motor operates at low speed with high torque. □ SAT / □ UNSAT

There is no hydraulic oil leakage. □ SAT / □ UNSAT

(3) Main Pumps The craft speed reaches approximately 25 mph.

There is no hydraulic oil leakage.

Actual speed: ________mph (Information only)

5-3 AT SEA TEST

TEST CONDITION STEP ACCEPTANCE CRITERIA RESULT

5-3.1 SEA MODE (1) Propeller Shaft Motor

The craft speed reaches approximately 7.5 knots.

Actual speed: ________mph

(Information only)

The propeller shaft motor works proportionally with the hand throttle.

□ SAT / □ UNSAT

There is no hydraulic oil leakage. □ SAT / □ UNSAT

5-4 COMPLETION OF THE TEST

RESPONSIBILITY PRINT NAME, SIGN & DATE

LWC

S246