1942 - 1947 Chevrolet Shop Manual



	9-9

	play in wormshaft. Check pull at wheel rim as outlined above, readjusting, if necessary, to obtain proper pull. Tighten locknut "C" and recheck pull, as it must He between the limits specified after the locknut is tightened. If the gear feels "lumpy" in turning the wheel after adjustment of worm bearings, this indicates damage in the bearings due to severe impact or to improper adjustment, and the assembly must be disassembled for replacement of damaged parts. Instructions for disassembly follow under the heading "Repair Operations." 6. Make sure that it will not be necessary to spring the steering column in attaching it to the instrument panel. It may be necessary to loosen the steering gear mounting bolts and shift the steering gear slightly. Tighten mounting bolts and the nuts on the mast jacket clamp. Then recheck the pull at the steering wheel rim. If this has increased very much, this indicates there is still a sprung condition in the column, which must be corrected before proceeding with the adjustment. 7. After proper adjustment of the wormshaft end-play is obtained, and all mounting bolts securely tightened, adjust lash adjuster "A," Fig. 18. First turn the steering wheel gently from one stop all the way to the other, carefully counting the total number of turns. Then turn wheel back exactly half way to center position. Mark wheel at top or bottom center with a, piece of tape. Turn lash adjuster "A" clockwise to take out all lash in gear teeth, and tighten lock nut "B." Check pull at wheel rim with checking scale as before, taking the highest reading of the checking scale as the wheel is pulled through center or straight ahead position. This should be between 2 and 2-1/2 pounds. Readjust, if necessary, to obtain proper pull. Tighten lock nut "B" and recheck pull as it must lie between the specified limits after the lock nut is tightened. 8. Reassemble steering connecting rod to pitman arm. REPAIR OPERATIONS Steering Gear Removal (Conventional Trucks) Repair operations on the steering gear require that it be removed from the truck. To remove the steering gear from the truck, proceed as follows: 1. Remove the floor and toe boards. 2. Remove the clevis pin from the brake lever pull rod at the idler lever.	3. Remove the steering wheel, using the steering wheel puller, J-1618. Remove mast jacket to instrument panel bracket and disconnect the horn wire. 4. Remove the steering connecting rod and pitman arm, using puller J-1025 for the pitman arm. 5. Remove the housing mounting bolts. 6. Remove the two rear bolts and one side bolt which attach the left engine side pan. The steering gear assembly can now be pulled up over the pedals and out the left door.
		STEERING GEAR REMOVAL (CAB-OVER-ENGINE TRUCKS) To remove the steering gear from the Cab-Over-Engine truck, proceed as follows: 1. Open hood, remove grille. 2. Remove the floor and toe pans on left side of driver compartment. Remove horn button and steering wheel using puller J-1618 and special centering adapter. Remove the wormshaft key and the spring which contacts the lower hub of the steering wheel and mast jacket bearing. Remove the mast jacket to instrument panel clamp. 3. Disconnect the steering connecting rod from the pitman arm. Remove the pitman arm nut and the pitman arm using puller J-871. 4. Remove the two screws attaching the horn wire terminal plate to the mast jacket just above the steering gear housing. Remove the two bolts from the mast jacket to sub-frame brace. 5. Remove the two cap bolts at the steering gear housing mounting bracket. Remove the steering gear assembly from the front of the truck. Steering Gear Disassembly As with any ball or roller bearing unit, the steering gear parts must be kept free of dirt. Clean paper or rags should be spread on the bench before starting disassembly of the steering gear. 1. Loosen the lock nut on the end of the sector shaft, "B" Fig. 18. Then turn the lash adjuster "A" a few turns counterclockwise. This will remove the load from the bearings caused by the close meshing of the rack and sector teeth. 2. Loosen the lock nut "C," Fig. 19. on the worm bearing thrust screw "D" and turn the thrust screw counterclockwise a few turns.