Replace/Repair Water Pump and Idler Group.

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REPLACEMENT

TM-55-1905-223-24-3 Ship s Service Generator for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 2-14. Water Pump and Idler Group.

TM 55-1905-223-24-3

2-33. Replace/Repair Water Pump and Idler Group.

This task covers:

a. Inspection

b. Adjustment c. Removal

d. Repair

e. Replacement

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's rail

Engine shut down and cooled below

and marine diesel engines,

120 (50 ). TM 55-1905-223-10.

Cooling system drained (Table 2-1,

Torque wrench kit P/N 3377216

Item 24).

Belt tension gauge P/N ST-1293

Air supply secured (port).

Battery banks disconnected (starboard).

TM 55-1905-223-10

Materials/Parts

Cooling system engine pump

P/N 3801708

V-belt P/N 217638

Gasket P/N 3024960

Water pump gasket P/N 300238

Bearing retaining ring P/N S-16255

Annular ball bearing P/N 115519 (8 ea.)

Ring spacer P/N 3050395

Centrifugal pump impeller P/N 3000888

Packing with retainer P/N 3033677

Spacer P/N 196844

Preformed packing P/N 43463-A

Belt-chain tension adjusting device

P/N 3050398

Rags, Item 4, Appendix C

INSPECTION

a. Remove the water pump belt guard (21, Figure 2-14). Refer to Removal step in this procedure.

b. Remove the water pump V-belt (25). Refer to Removal step in this procedure.

Turn the groove pulley (18) by hand to check ease of rotation. If the pulley (18) does not turn easily,

replace the belt tension adjusting device (20).

2-85