G 20 Van V6-262 4.3L VIN Z (1993)
Steering Gear: Adjustments
Nippon Seiko Recirculating Ball Gear
Fig. 2 Pitman Arm Alignment
Fig. 3 Adjusting Worm Shaft Starting Torque
1.
Ensure worm shaft is free from thrust play.
2.
Position pitman arm 11 degrees from the parallel to the worm shaft, Fig. 2. Front wheels should be in the straight ahead position.
3.
Measure shaft starting torque with front wheels straight ahead, using pinion socket J-34871-A or equivalent and a torque wrench, Fig. 3. Torque
should be 5-8 inch lbs., if not within range adjust as necessary.
4.
Check worm shaft operating torque. Torque should be 12 inch lbs.
5.
If torque is not as specified, adjust worm shaft starting torque, then recheck operating torque.
6.
If specifications are not obtained after adjustment, replace gear box.
