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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
Equipment Condition
Tool kit, general mechanic's rail
Engine shutdown, coolant drained.
and marine diesel engine
TM 55-1905-223-10.
Liquid level gauge rod P/N 3057445
Pressure switch P/N 3057444
Coolant, Item 3, Appendix C
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 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.
Change 3


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