TB 9-6115-644-13
4-20
COOLANT PUMP MAINTENANCE.
This task covers:
a. Test
c. Replace
b. Remove
d. Install
INITIAL SETUP
Tools
Equipment Conditions
Tool Kit, General Mechanic's
Reference
(item 1, appendix B)
Materials/Parts:
Sealant
Generator shut down, TM 9-6115-644-10, Paragraph 2-9.2
(item 1, appendix F)
Heater shut off, TB 9-6115-644-13, Paragraph 2-4.1.c
WARNING
Disconnect negative battery cable from right battery and the positive
battery cable from the left battery before doing the following
procedures. Failure to observe this warning could result in severe
personal injury or death.
WARNING
Before disconnecting any coolant lines, let generator cool from
operation, then relieve pressure by opening radiator cap carefully.
Coolant is hot and under pressure and may cause severe burns.
TEST
Refer to troubleshooting procedure, Figure 4-6 (Overheating).
REMOVAL
1.
Disconnect negative battery cable.
2.
Remove electrical cover (1), Figure 4-31, and 12-pin connector (2).
3.
Remove 12-pin connector (2) and push out pins (3) to coolant pump (6).
4.
Remove clamp (7), attaching pump (6) to heater (8).
5.
Loosen clamp (4) and remove outlet hose (5) from pump (6), using a container to catch coolant from hose.
REPLACEMENT
1.
Perform steps 1 thru 5 of removal.
2.
Perform steps 1 thru 6 of installation, substituting new coolant pump for the defective one.
INSTALLATION
1.
Attach coolant pump (6) with clamp (7) to heater (8).
2.
Apply sealant to outlet and attach hose (5) with clamp (4) to pump (6).
