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 TM 5-1940-277-20
TM 1940-20/2
REMOVE:
NOTE
This procedure covers two different transmission oil coolers used
on different engines. Step five through step eight applies to the
MK1 and MK2 w/Sabre engine. Step nine and step 10 apply to the
MK2 w/Cummins engine.
1.
Remove aft cockpit (refer to paragraph 3-27).
2.
Open and secure engine hatches (refer to paragraph 3-154).
3.
Remove oil filler cap and dipstick assembly (1).
4.
Place suitable container (2) under drain (3).
5.
Using 7/8 inch open end wrench remove oil return hose fitting (4).
6.
Allow oil to drain.
7.
Using 3/4 inch open end wrench remove adapter (5).
8.
Using 7/8 inch open end wrench remove hose fitting (8) from adapter (7) on transmission oil
cooler (8).
9.
Remove oil cooler hoses (11) and (14) from oil cooler from elbows (10) and (12) and adapter (13) on
transmission oil cooler (15).
10.
Remove elbows (10) and (12) and adapter (13) from transmission and transmission oil cooler (15).
CLEAN AND INSPECT:
1.
Clean and inspect bushings, hoses and hose fittings:
a. Replace bushings and return tube (8) if corroded, split, bent or damaged.
b. Replace hoses if split, cracked, cut, spongy or damaged.
2.
Discard damaged items.
INSTALL:
NOTE
This procedure covers two different transmission oil coolers used
on different engines. Step three through step five apply to the
MK1 and MK2 w/Sabre engine. Step six through step eight apply
to the MK2 w/Cummins engine.
1.
Using 7/8 inch open end wrench install hose fitting (6) onto adapter (7).
2.
Using a rag (Item 4, App. C) wipe excess oil from drain hole (3).
3.
Using 3/4 inch box wrench insert and tighten adapter (5) into bushing (9).
4.
Attach oil return hose fitting (4) to adapter (5).
5.
Using 7/8 inch open end wrench tighten fitting (4).
6.
Install transmission oil cooler elbows (10) and (12) and adapter (13) on transmission and
transmission oil cooler (15).
7.
Install oil cooler line (11) onto elbow (10) and adapter (12).
8.
Install oil cooler line (14) onto elbows (10) and (12).
9.
Fill transmission with fluid (refer to LO 5-1940-277-12).
NOTE
If oil returned hose replacement is the only procedure to be
performed, service with oil (refer to LO 5-1940-277-12/LI 1940-12)
and close hatches.
Change 2
3-289
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