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 TM 5-1940-277-20
TM 1940-20/2
5.
Using screwdriver loosen two clamps (2) securing rubber hose (3) to oil cooler (4) and pipe (1).
6.
Using screwdriver loosen two hose clamps (2) securing straight hose (13) to pipe (14) and oil cooler
(4) on MK1. Using screwdriver loosen two hose clamps (2.1) securing 90 elbow hose (13.1) to pipe
(14.1) and oil cooler (4) on MK2.
7.
Move rubber hoses (3 and 13 on MK1 or 3 and 13.1 on MK2) away from ends of oil cooler (4).
8.
Using 11/16-inch wrench remove hose fitting adapter (4.1) from end of oil cooler (4) on MK2.
9.
Using 14-mm box wrench remove bolt (5) and washer (6) from bracket (12) and adapter plug (11).
10.
Using oil filter wrench remove oil hose fitting (15).
11.
Using 3/4-inch open end wrench remove oil hose fitting (15).
12.
Using 5/8-inch open end wrench remove two bolts (7) and washers (8) securing oil cooler flange and
gasket (9) to engine.
13.
Remove oil cooler (4).
14.
Remove adapter plug (11) using 14-mm box wrench.
15.
Using rags (Item 4, App. C) wipe up any oil or coolant that was spilled.
REPLACE:
1.
Install oil filter (10) on oil cooler (4) and hand tighten only.
2.
Install adapter plug (11) on oil cooler (4).
3.
Coat new gasket (9) with silicone sealant (Item 3, App. C). Install on engine and align holes in
engine block.
4.
Place oil cooler (4) so flange is aligned with holes in gasket (9).
5.
Install two washers (8) and bolts (7) and hand tighten bolts.
6.
Using 5/8-inch open end wrench tighten two bolts (7).
7.
Install oil hose fitting (15) and tighten using 3/4-inch open end wrench.
8.
Install washer (6) and bolt (5) through bracket (12) in adapter plug (11) and tighten using 14-mm
box wrench.
9.
Using 11/16-inch open end wrench install hose fitting adapter (4.1) on end of oil cooler on MK2.
10.
Push rubber hoses 3 and 13 on MK1 or 3 and 13.1 on MK2) on ends of oil cooler (4) beyond flare.
11.
Using screwdriver tighten four hose clamps (2) on hoses (3 and 13 or 13.1).
12.
Refill fresh water cooling system on MK1 (refer to paragraph 3-68). Refill primary and secondary
cooling systems on MK2 (refer to paragraph 3-69).
3-161
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