Replace/Repair of Water Pump and Idler/Belt Guard Group.

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REPLACEMENT

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

FIGURE 2-21. Water Pump and Idler (Sheet 1 of 3).

TM 55-1905-223-24-5

2-29. Replace/Repair of Water Pump and Idler/Belt Guard Group.

This task covers:

a. Inspection

b. Adjustment

c. Removal

d. Repair

e. Replacement

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's

Engine shut down and cooled to 120

rail and marine diesel engines,

(TM 55-1905-223-10).

5180-00-629-9783

Engine tagged, "Out of Service - Do Not

Combination wrench set,

Operate."

metric 10mm to 24mm,

5120-01-046-4979

Belt tension gauge P/N ST-1293

NOTE

Standard puller P/N ST-647

Bearing disassembly fixture

Engine water pump (major) parts

P/N 3376637

kit, P/N 3801712, need for

Torque wrench (30-300 ft-lb),

complete repair of water pump.

5120-01-125-5190

Mandrel kit, P/N ST-1325

Materials/Parts

Gasket P/N 3024960

Preformed packing P/N 43463-A

V-belt P/N 217638

Belt-chain tension adjusting device

P/N 3050398

Engine cooling system pump P/N 3810708

Bearing retaining ring P/N S-16255

Annular ball bearing P/N 115519

Spacer P/N 196844

Centrifugal pump impeller

P/N 3000888

Packing with retainer P/N 3033677

Shouldered shaft P/N 3050394

Gasket P/N 3002385

Cleaning solvent, Item 5, Appendix C

Warning tag, Item 25, Appendix C

Loctite, Item 37, Appendix C

INSPECTION

a. Remove belt guard (5, FIGURE 2-21, Sheet 1) by removing two hexhead capscrews (2), lockwashers

(3), and flat washers (4).

b. Turn idler groove pulley (18, FIGURE 2-21, Sheet 1) by hand to check ease of rotation. If pulley does

not turn easily, replace the idler pulley assembly (32, FIGURE 2-21, Sheet 3). Refer to REMOVAL

steps of this procedure.

2-85