Replace/Repair Expansion Tank Group

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FIGURE 2-61. Oil Pan and Adapter Group Capscrew Torque Sequence.

TM-55-1905-223-24-1 Main Propulsion Engine for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 2-62. Expansion Tank Group.

TM 55-1905-220-24-1

2-37. Replace/Repair Expansion Tank Group. (FIG. 2-62)

This task covers:

a. Removal,

b. Repair.

c. Replacement

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's rail

Engine shutdown, coolant drained.

and marine diesel engine

TM 55-1905-223-10.

Materials/Parts

Liquid level gauge rod P/N 3057445

Pressure switch P/N 3057444

Coolant, Item 3, Appendix C

REMOVAL

A. Remove insulation blanket (10).

B. Remove piping connections from expansion tank.

C. Remove six machine bolts (3), lockwashers (4) and hexagon nuts (5) retaining the expansion tank (9).

Remove expansion tank.

D. Remove filler opening cap (1).

E. Remove fill opening connection (2).

F. Remove liquid level gauge rod (6).

G. Remove pressure switch (8).

H. Remove water line (7) from bottom of tank (9).

REPAIR

Repair of the expansion tank group consists of a thorough inspection of all components for serviceability.

Inspect all threaded components for clean, undamaged threads, check the gauge and switch for proper

operation. Replace any component as required. Insulation blankets are to be procured/fabricated commercially

from sources skilled in the art of manufacturing removable insulation from material meeting requirements of

MIL-I-24244 and MIL-I- 16411, Type II.

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