Section IV. REMOVAL AND INSTALLATION OF MAJOR COMPONENTS

g. Part Replacement. Replace authorized parts

f. Welding Repair. Welding must be performed

w h i c h a r e w o r n o r d e f e c t i v e w i t h n e w parts.

by a qualified welder. Welds must provide complete

Consider such factors as age, mileage, operating

fusion and penetration and comply with governing

hours, usage, and parts availability to determine

specifications. I n s p e c t a l l w e l d s u s i n g a

the necessity of part replacement.

radiographic or magnetic particle process. Grind all

new welds flat and smooth whenever possible.

Section IV. REMOVAL AND INSTALLATION OF MAJOR COMPONENTS

2-8. Engine

a. Removal.

Note. It is recommended that the engine and transmission

be removed as a unit. Clean the engine and transmission before

removing from the truck.

(1) Remove the counterweight. Refer to TM

10-3930-624-12.

Note. Tag all hydraulic lines, coolant lines, electrical

wiring, fuel lines, and mechanical linkages which are

disconnected for engine removal. This will ensure proper

reinstallation of the engine.

(2) Drain the engine cooling system and

disconnect the coolant hoses from the radiator.

(3) Refer to TM 10-3930-624-12 and drain

the oil from the transmission. Disconnect the

transmission oil cooler lines at the radiator. Cap or

plug openings.

(4) Refer to TM 10-3930-624-12 and remove

the radiator from the truck.

(5) Drain the hydraulic reservoir (fig. 2-1).

Disconnect the hydraulic hoses at the pump (fig. 2-

2). Cap the ends of the hoses and the pump inlet

and outlet ports to prevent the entry of foreign

material. Remove the hose clamps on each side of

the oil pan. Tie the lines out of the way.

Figure 2-l. Hydraulic reservoir drain.

2-7