Section III. ENGINE (GROUP 01)
Straighten lock plates and remove
12. Engine Unit (Overall)
capscrews that secure yoke fitting to
cross and bearing assembly and
separate propeller shaft from yoke
Remove floor plates
fitting at transmission.
Remove mat support.
Disconnect transmission linkage at the
Remove hood. (Refer to TM 108980-
control valve (fig. 2).
Disconnect inlet and outlet hydraulic
Drain coolant from radiator and engine
lines at auxiliary hydraulic pump.
Remove the nut that secures engine to
Remove upper and lower radiator hoses
each rear engine support.
(Refer to TM 10-3930-22220.)
Remove nuts, washers, spacers,
(Refer to TM 108989-
lockwashers and pads from front engine
mounting on each side of engine. After
Remove radiator (par. 35).
engine assembly is raised from
Drain engine oil.
supports, remove spacers.
Using suitable hoist and chains, remove
lockwashers and separate the hydraulic
engine assembly, with the torque
pump drive shaft from the crankshaft
attached, from truck (fig. 3) and place
Disconnect the choke cable at the
on suitable stand.
Remove the transmission assembly
Disconnect the accelerator linkage at
the carburetor. Disconnect fuel tank to-
Remove the torque converter and
fuel pump line at fuel pump.
housing assembly (par. 43a).
Disconnect and tag battery lead wire at
b. Installation Reverse procedure in a above.
Disconnect and tag wire at temperature
13. Cylinder Head
a. Removal and Installation. Refer to TM 10-3930-
Disconnect and tag wire at oil pressure
b. Inspection and Repair.
Disconnect and. tag hour meter wire at
(1) Inspect cylinder head (1, fig. 4) for cracks and
hour meter pressure switch.
sand holes after it is removed from block.
Disconnect and tag wire at coil.
(2) Place head on surface plate and check for
Disconnect and tag two wires at starting
warping by using a 0.012-inch feeler gage as a
motor solenoid switch.
go-no-go gage between head and surface plate.
Remove clip that secures the wiring
If gage goes, resurface or replace cylinder head.
harness to the starting motor.
Remove clips that secure the wiring
14. Oil Pan
harness at two places on the
(1) Remove drain plug (26, fig. 4) and gasket (27)
Disconnect and tag neutral switch wires
and drain the crankcase.
at transmission control valve (fig. 2).
(2) Remove assembled washer bolts (28).
(3) Remove oil pan and gaskets.
b. Cleaning and Repair.
Remove capscrews and lockwashers