Installation. - TM-10-3930-621-340057

TM 10-3930-621-34

(g) Oil pressure transmitter

(9) Install upper and lower radiator hoses and

(h) Master cylinder ground wire.

clamps on radiator and engine.

(10) Clean and flush radiator before refilling (TM 10-

(7) Shut off fuel supply at shut off valve below fuel

3930-621-12).

tank and disconnect fuel line from fuel pump.

(11) Refill radiator with soft water, if available, and

(8) Disconnect all accelerator and inching pedal

add anti-freeze or corrosion inhibitor to the water as

linkages (TM 10-3930-621-12).

applicable.

(9) Disconnect propeller shaft at both ends and

(12) Check to see if engine and transmission drain

remove (TM 10-3930-621-12).

plugs are in position and secure.

(10) Disconnect exhaust pipe at manifold.

(13) Move truck rear wheels off blocks and replace

(11) Support engine and transmission assembly

counter-weight, rear fenders and grille.

with a suitable hoist and sling.

(14) Fill engine and transmission with proper grade

(12) Remove engine mounting bolts from front and

of oil (LO 10-3930-621-12).

rear engine mounts.

Caution: Do not overfill transmission.

(13) Using hoist, raise engine enough to clear

(15) Before starting engine, check oil levels on

mounts. Maneuver engine free of compartment and

dipsticks.

truck.

(16) Start and run engine. Check transmission oil

(14) If transmission assembly interferes with

level with engine at idle speed.

projected work on engine, remove it from the engine

(17) Perform hot oil level check and hydrometer

(para 2-6 a).

check of coolant (TM 10-3930-621-12).

b. Installation.

(18) If engine is performing satisfactorily, install seat

(1) If work on the engine necessitated the removal of

assembly and side panels.

the transmission, install it (para 2-6 b) before replacing

the engine in the truck.

2-6. Transmission Assembly

(2) Using hoist, slowly lower engine with

transmission down on rubber engine mounts. Maneuver

a. Removal.

until mounting bolts can be installed.

Caution: Use extreme care in maneuvering the

Note. The transmission assembly consists of torque

converter and pump assembly, clutch pack, gear train,

engine and transmission into the truck to prevent

and control valve components. All of these components,

damage.

except the torque converter, may be removed from the

(3) When engine mounting bolts have been

truck as a unit. The torque converter, without pump

tightened securely on both front and rear mounts,

assembly and housing, can only be removed from the

remove the hoist.

flywheel after the unit is removed.

(4) Connect both ends of propeller shaft and all

accelerator and inching pedal linkages (TM 10- 3930-

(1) Remove floor plates, seat deck assembly,

621-12).

battery case and battery, and one corner post (TM 10-

(5) Connect exhaust pipe to manifold outlet flange.

3930-621-12).

(6) Connect fuel line to fuel pump and open fuel

(2) Drain oil from transmission by removing drain

supply valve below fuel tank.

plug at bottom of case.

(7) Referring to tagged leads and terminals, connect

(3) Disconnect cooler lines and clutch and selector

the following electrical components:

control linkages (TM 10-3930-621-12).

(a) Master cylinder ground wire

(4) Disconnect output flange from propeller shaft

(b) Oil pressure transmitter

cross assembly in accordance with (TM 10- 3930-621-

12).

(d) Hourmeter wires

(5) Install lifting hooks on top of transmission case

(e) Alternator (plug and two terminals)

and attach a suitable hoist to each. Remove slack from

(f) Coil to distributor cable

hoist.

(g) Starter cable

(6) Remove 12 screws and lock washers attaching

(h) Battery ground cable.

converter housing to flywheel housing (fig. 2-1).

(8) Connect oil filter, transmission oil cooler and

hydraulic pump lines. Install associated clamps.

2-4