TM 9-6115-668-13
5.31 ENGINE PREHEATING ASSEMBLY MAINTENANCE.
This task covers:
a. Removal
b.
Test
c.
Installation
INITIAL SETUP
Tools
Equipment Conditions
General Mechanic’s Tool Kit
Reference
(item 2, appendix B)
Generator Set 150 kW shut down,
Automotive Fuel and Electrical System Repair, Tool Kit
paragraph 2.5.2
(item 3, appendix B)
Materials/Parts
Cable ties
(item 10, appendix E)
WARNING
Make sure that there are no open flames in the vicinity, and that fuel cannot
splash onto hot components. Failure to observe this warning could result in se-
vere personal injury.
REMOVAL
1.
Remove unit hood assembly (1, figure 5-43) as instructed in paragraph 4.14.
2.
Remove cable J102 (23) from plug connector X102 on connector box (24) of heating unit (12).
3.
Remove nut (22), washers (21, 19), serrated lock washer (20), and grounding cable (18) from threaded pin (17)
on heating unit (12).
4.
Pull plug connector X103 (27) out of rear of heat exchanger box (3).
5.
Loosen clamp (28) and pull air hose (29) off fitting of heat exchanger box (3).
6.
Loosen screw on clamp (31) and remove clamp (31) with seal (30).
7.
Loosen locknut (24) and unscrew screw (35) five turns out of nut (33) on exhaust manifold (32).
8.
Remove exhaust manifold (32) from heating unit (12).
9.
Loosen screw on clamp (25) and remove air inlet pipe (26) from heating unit (12).
10. Remove screws (6) of clamp strap closures (7) and unhook clamp strap closures (7).
11. Remove screws (8), serrated lock washers (9), and washers (10).
C A U T I O N
Place a container under fuel line connectors and collect any fuel that emerges.
NOTE
For better access to clamps on fuel lines, rotate heating unit to the left. If fuel lines
are not to be reinstalled immediately, bag with plastic bag and secure with rubber
band.
5-177
