Repair Hydraulic Pump - TM-55-1905-223-24-160148

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FIGURE 4-37. Reservoir

TM-55-1905-223-24-16 Stern Anchor Winch for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 4-38. Hydraulic Pump

TM 55-1905-223-24-16

4-18. Repair Hydraulic Pump.

This task covers: a. Removal, b. Cleaning, c. Inspection, d. Repair, e. Replacement.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's,

Stern anchor winch shut down, tagged

"Out of Service - Do Not Operate."

Tool kit, measuring machinist's,

(Reference TM 55-1905-223-1O)

5280-01-278-9919

Refer to the following paragraph in this

Torque wrench (30-300 foot-pound),

maintenance manual:

(41-408 N-m)

Hydraulic pump removed (para. 2-17).

5120-01-125-5190

Materials/Parts

Preformed packing P/N MS28775-24

Unitized cartridge P/N S24-10724

Fine India stone, Item 18 Appendix C

Fine Lapping abrasive compound, Item 2

Cleaning solvent, Item 14, Appendix C

Lint-free cloth, Item 1, Appendix C

Electrical tags, Item 16, Appendix C

Crocus, cloth, fine, Item 4, Appendix C

a. Secure pump in a vise with liquid pump housing (12) at topside. Clamp vise on front mounting cap (1), not on the

housing.

b. Remove four hexagon head capscrews (11) from liquid pump housing (12). Remove housing. Note position of

the inlet port in reference to pressure port for use during replacement procedures.

Remove preformed packing (10) from liquid pump housing (12).

CAUTION

Be sure not to remove the shaft at this time.

d. Firmly grasp unitized cartridge assembly (9) and, while using a rotating motion, pull outward and remove cartridge

from front mounting cap (1). It may be necessary to hook a gear puller, prying bar or screwdriver under cam ring

(see FIGURE 4-39), to extract cartridge assembly. Place cartridge assembly on a flat surface for cleaning and

inspection. Remove remainder of pump assembly from vise and store in a secure area.

4-81