Replace/Repair Accessory Drive and Pulley Group

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Table 3-4. Change in Push Rod Travel Due to Gasket Thickness-cont.

TM-55-1905-223-24-5 Bowthruster Engine for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 3-40. Power Take Off, Accessory Drive and Pulley Group

TM 55-1905-223-24-5

3-19. Replace/Repair Accessory Drive and Pulley Group.

This task covers:

a. Removal

b. Repair

c. Replacement

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's,

Water pump belt removed (para. 2-29)

rail and marine diesel engines,

Fuel pump removed (para. 2-33).

Combination wrench set,

metric 10mm to 24mm,

5120-01-046-4979

Torque wrench kit P/N 3377216

Standard puller P/N ST-647

Materials/Parts

Pump pulley sleeve, P/N 190397

Gasket, P/N 200809

Power takeoff transmission, P/N 3005131

Drive pulley coupling, P/N 3000175

Thrust bearing washer, P/N 3026557

Straight headless pin, P/N 3034438

Shaft, P/N 3000171

Thrust bearing washer, P/N 3026556

Helical gear, P/N 142689

Constant speed drive, P/N AR-45728

Sleeve bearing, P/N 116391

Crocus cloth, Item 14, Appendix C

Clean cloth, Item 4, Appendix C

REMOVAL

Remove the pulley retainer nut (12, FIGURE 3-40) and washer (11).

CAUTION

The timing marks on the accessory drive gear and the camshaft gear must be aligned so that

the valve and the injector set marks on the accessory drive pulley show the correct

adjustment position.

Rotate the crankshaft until the "A" mark (1, FIGURE 3-41) on the accessory drive is aligned

with the pointer (2) on the gear cover.

3-61