Revised_Work_item_17_CapstansLevel2InspectandRepair.pdf

58202_TAB_6514_418

Forward and Aft Capstans, Level 2 Inspect and Repair

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to perform Level 2 inspection and repair of Mooring Capstans listed in the Table 1.

TABLE 1 – FORWARD AND AFT CAPSTANS

WARPING CAPSTAN/POSITION MOTOR CONTROLLER

LOCATION

POWER PANEL/POWER

PANEL LOCATION

Midship Capstan Port/Port Side 01 Level near Frame 50

1-44-2-l/Officer Wardroom/Lounge

01-41-1/01-38-1-L

Midship Capstan Starboard/Starboard Side 01 Level near Frame 47

1-44-1-Q/Trash Stow and Staging Room

01-41-1/01-38-1-L

Stern Capstan Port (Towing Capstan) Main deck near Frame 87 Passage Way :2-88-0-L Port Side 2-83-4/Passage 2-82-01-L

Stern Capstan Starboard, Main deck near Frame 87

Passage Way :2-88-0-L Starboard Side

2-87-1/Passage 2-82-01-L

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 750-WMSL 100-60, Rev C, General Arrangements Hull 3 & Follow

(AS3100001)

Coast Guard Drawing 750-WMSL 801-4, Rev -, Booklet of General Plans (ASC801001) Coast Guard Drawing 750-WMSL 582-1, Rev D, Anchoring, Mooring, And Towing

Arrangement (ASC582001) Coast Guard Drawing 750-WMSL 582-2, Rev E, Mooring and Towing Arrangement

(ASC582002)

COAST GUARD PUBLICATIONS

Coast Guard Technical Publication (TP) 7065, 15-JUN-07, Forward and Aft CAPSTAN - Model

20834 Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2012

General Requirements Surface Forces Logistics Center Standard Specification 3020 (SFLC Std Spec 3020), 2012, Overhaul AC Electrical Motors In-Shop Surface Forces Logistics Center Standard Specification 5000 (SFLC Std Spec 5000), 2012, Auxiliary Machine Systems

OTHER REFERENCES

None.

3. REQUIREMENTS

3.1 General.

3.1.1 CIR. The Contractor shall submit a CIR for the inspections listed in the following paragraph:

• Task #1

• Task #5

• Task #6

3.1.2 Tech Rep.

Not applicable.

3.1.3 Protective measures. The Contractor shall protect components, spaces, and equipment in accordance with SFLC Standard Specification 0000 paragraph 3.3.3 (Vessel component, space and equipment protection.

3.1.4 Interferences. The Contractor shall handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

3.2 Tasks to be performed. The Contractor shall perform the tasks designated in the Table 2 on each capstans listed in the Table 1.

TABLE 2– RECURRING MAINTENANCE REQUIREMENTS

ADDITIONAL REQUIREMENTS

# TASK TYPE

(SFLC STD

SPEC 5000

PARA.

REF.)

QTY COMPONENT OR

ASSEMBLY

APPENDIX AND

PARA. FROM

SFLC STD SPEC

OTHER

1 Operate and Inspect

1 Capstan 3.2.1 (Operate and Inspect)

Submit CIR

2 Disassemble and Inspect

1 Slew Gear and pinion 3.2.3 (Disassemble and Inspect)

Lubricate per Coast Guard Technical Publication (TP)

7065.

3 Service and inspect 1 Bevel Gear box 3.2.2 (Clean and inspect) Do not disassemble bevel gear box. Inspect seals for leaks 4 Disassemble and Inspect 1 Brake Assembly 3.2.3 (Disassemble and Inspect) The contractor will renew all parts listed in Table 4 below.

Submit CIR 5 Disassemble and Inspect 1 Planetary Gear Reducer. 3.2.3 (Disassemble and Inspect) See Para 3.3.1. Verify output bearing is grease lubricated.

Renew all parts listed in Table 3 below. Submit CIR

ADDITIONAL REQUIREMENTS

# TASK TYPE

(SFLC STD

SPEC 5000

PARA.

REF.)

QTY COMPONENT OR

ASSEMBLY

APPENDIX AND

PARA. FROM

SFLC STD SPEC

OTHER

6 Reinstall 1 Capstan Assembly

Partially Preserve

1 Capstan Assembly 3.2.4.2 (Partially Preserve)

Preserve all Capstan external surfaces.

8 Groom and Lubricate

1 Capstan Assembly 3.2.6 Groom and Lubricate

Table 4-1 of Tech Pub 7065.

9 Operational and Weight

Testing

1 Capstan Assembly 3.2.8 Operational and Weight Testing

See Paragraph 3.4 below.

Static load testing is not required at this time.

10 Fabricate and

Install 1 Label plates B2.9 (Label Plates) Fabricate and Install

3.3 Planetary Gear Reduction Assembly. The Contractor shall ensure that shims are retained and reused in original positions.

3.3.1 The Contractor shall provide and install Planetary Gear Reducer parts listed in the Table 3 and all lubricants required for completion of work item.

TABLE 3 – PLANETARY GEAR REDUCER PARTS

QUANTITY PART

NUMBER

DESCRIPTION SUGGESTED SOURCE

OF SUPPLIER FIGURE

8 01-402-0560 Find 33 O-Ring 167mm x 3 mm http://www.eskridgeinc.com TP 7065 Table 7.3

4 01-402-0010 Find 56 O-Ring http://www.eskridgeinc.com TP 7065 Table 7.3

3.4 Brake Assembly. The Contractor shall provide and install Brake Assembly parts listed in the Table 4.

TABLE 4 – BRAKE ASSEMBLY PARTS

QUANTITY PART

NUMBER

DESCRIPTION SUGGESTED SOURCE

OF SUPPLIER FIGURE

4 9-02-0015-00 Find 2S End Plate Seal http://www.rexnord.com TP 7065 Table 7-5 8 8-003-206-01 Find 3 Stationary disc http://www.rexnord.com TP 7065 Table 7-5

12 5-66-8420-00 Find 4 Friction disc http://www.rexnord.com TP 7065 Table 7-5 4 8-069-203-00 Find 69 Gasket, housing to end plate http://www.rexnord.com TP 7065 Table 7-5

3.5 Electric motor. The Contractor shall inspect and test electric motor in accordance with Para 3.1 through 3.3.4 of the SFLC Std Spec 3020 and reinstall the drive motor. Submit a CFR. Be aware that based on the inspection report, the Government may elect to issue a change order to omit reconditioning or increase the scope to include rewinding or miscellaneous repairs

3.6 Shipboard testing. The Contractor shall perform a no load test each capstans listed in the Table 1.

Run each capstan without load at fast speed in each direction for ½ hour to determine that no abnormal heat, wear, or noise develops in any parts.

3.6.1 Brake test. With the capstan rigged for developing normal line pull, each capstan brake shall be subjected to a static test for 10 minutes. The load shall be applied using several turns of line around the head to produce the desired torque. The brake shall hold 150% of the rated load (22,500 lbs).

3.6.2 Operating test. The Contractor shall run each capstan continuously at rated load in each direction for ½ hour, allowing for reverse rotation of the capstan.

3.7 Special requirements for various components. If a Change Request has been authorized for additional work on any of the components listed in Table 3 below, the Contractor shall refer to the corresponding Appendix or paragraph of SFLC Std Spec 5000 as applicable:

TABLE 3 – SPECIAL REQUIREMENTS

COMPONENT APPENDIX & PARAGRAPH IN SFLC STD SPEC 5000

Fluids C2.1

Fastener assemblies D2.1 Wire rope assemblies D2.2 Brakes and clutches D2.3

Open gearing and gear reducers D2.4

4. NOTES

4.1 Quick reference. Capstan operating characteristic is shown in Table 4. Capstan General Arrangement is shown in the Figure 1.

TABLE 4 – CAPSTAN OPERATING CHARACTERISTICS

PARAMETER VALUE

Capstan head diameter 18 Inches Capstan pulling Capacity 15,000 Lbs Static Load (bitt load) 149,800 Lbs

Operating speeds, unloaded High 21.23 rpm Low 10.62 rpm

Motor performance characteristics 440 VAC,3-Phase, 30 HP, 60 Hz, NEMA 326, Totally Enclosed

Motor rpm unloaded High 1800 rpm Low 900 rpm

Planetary gear ratio 16.65 : 1 Slew gear ratio 5.092 : 1 Brake performance characteristics 440 VAC coil voltage, 230 ft-lb static torque

FIGURE 1: CAPSTAN ASSEMBLY