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 TM 55-1905-223-24-9
2-14. Replace/Repair Helm Pump (Figure 2-5)
This task covers:
a. Service,
b. Removal,
c. Disassembly,
d. Repair,
e. Replacement
INITIAL SETUP
Tools
Equipment Condition
Tool kit, general mechanic's,
Equipment shut down and tagged
"Out of Service - Do Not Operate."
See TM 55-1905-223-10.
Materials/Parts
Helm pump, P/N 300-0010
Lint free cloth, Item 5, Appendix C
Utility pail, Item 28, Appendix C
Gasket, P/N 10-300015
Seal, P/N 10-500009
SERVICE
Make sure helm pump has adequate lubrication. Lubricate or add oil in accordance with LO 55-1905-223-12.
REMOVAL
a. Set local control unit switch located in steering gear room to LOCAL (1, FIGURE 2-5, Sheet 1).
b. Position utility pail under header tank (2) in steering gear room.
c. Disconnect header tank output line (3) at helm pump (4) and drain into waste oil container.
d. Disconnect and cap input and output lines (5, 6). Wipe up spillage.
e. Remove bolt (13, FIGURE 2-5, Sheet 2) securing wheel to pump. Remove wheel and guide key (14). Keep the
key for assembly.
f. Remove two pump mounting bolts (15) and remove pump (16).
DISASSEMBLY
a. Remove pipe plug (7, FIGURE 2-5, Sheet 2).
b. Remove five plain hexagon nuts (9) and capscrews (10).
2-18
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