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 TM 5-1940-277-20
TM 1940-20/2
6.
Slide hoses free of header tank pipes.
7.
Using 3/4-inch combination wrench, remove hose fitting adapters (5) from header tank.
9.
Using 1/2-inch wrench, remove two nuts (6) and washers (7) securing header tank to support
brackets (11).
10.
Lift header tank free of studs (8) and remove from engine.
11.
Using putty knife, remove gasket (12).
12.
Replace header tank.
INSTALL
1.
Coat replacement header tank gasket (12 with silicone sealant (Item 3, App. C).
2.
Install gasket (12).
3.
Slide header tank onto header tank studs (8).
4.
Using socket, reinstall washers (10) and bolts (9) securing header tank to support brackets (11).
5.
Using 1/2-inch wrench, reinstall two washers (7) and nuts (6) securing header tank to header tank
studs (8).
6.
Using 3/4-inch combination wrench, install hose fitting adapters (5) on header tank.
7.
Slide hoses onto header tank pipes beyond flare.
8.
Using screwdriver, tighten hose clamp on elbow connector (2) to thermostat bypass pipe (3), and
header tank to secondary water pump pipe (4).
9.
Connect overflow drain tube (1) to overflow outlet.
10.
Fill header tank with coolant (refer to paragraph 3-69).
11.
Close engine hatches.
12.
Close battery hatch.
3-157
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