C.Install New Split Rings Onto the Valve Assembly As Follows:
Figure 7 - Valve Body Ring Installation:
Important
Valve assemblies and housings are NOT interchangeable. The same valve assembly MUST be reinstalled or rack and pinion assembly must be replaced.
Important
Apply a liberal quantity of grease supplied in kit, in each ring groove and to new valve body rings when installed to hold rings in position. (See Figure 7.)
1. Install new valve body rings to pinion and valve assembly. (Care must be taken not to cut rings at installation.)
Figure 8 - Ring Setting Procedure:
2. Place pinion and valve assembly into clear pinion and valve assembly ring protector J 37090. (Be sure to use only the clear protector.) Allow to set for approximately three minutes while continuing installation preparation. This allows the valve rings to be properly sized.
3. Position valve assembly in protector so that valve body is flush with bottom of clear protector. (See Figure 8.)
Inspect
Inspect valve body rings for cuts, nicks or other damage, proper seating of rings in grooves and engagement of split tabs.
Figure 3 - Housing Reference Mark (Typical) and Rack Centering Measurement:
4. Rack must be centered in housing. (See Figure 3.)
5. Wipe housing bore clean of any foreign material.
Figure 9 - Housing Bore Preparation:
vImportant
Apply a liberal quantity of grease to the valve housing bore. Be sure to fill grooves with grease. This will ease reassembly of valve into housing.
Figure 10 - Bearing and Annulus Inspection:
Inspect
Inspect stub shaft bearing annulus for flatness and damage. Clean before reassembly.
Figure 11 - Pinion and Valve Installation:
6. Align stub shaft flat or notch with second mark on housing made during disassembly. (See Valve Removal, Section B - Step 9.) Install pinion and valve assembly with spool shaft retaining ring, and valve body rings included, into housing using J 37090 to prevent damage to valve rings during assembly.
vImportant
Set pinion and valve assembly onto housing using J 37090. Use J 29822 pinion seal installer to push assembly into housing bore. DO NOT hammer or use excessive force. If pinion and valve assembly does not fully seat in housing, check to be sure valve body rings are not binding in housing bore. Check rings for cuts or damage. Repeat installation steps 1 through 5. If pinion and valve assembly will not align properly in housing bore, replace rack and pinion assembly.
Figure 3 - Housing Reference Mark (Typical) and Rack Centering Measurement:
Inspect
When pinion and valve assembly is fully seated, flat or notch in stub shaft and first mark on housing must line up while the rack is centered in the housing. Refer to measurement "A" to verify proper rack position. (See Figure 3.)
7. While holding the stub shaft, thread lock nut onto pinion and torque to 35 N-m (26 Lbs.Ft.).
Figure 12 - Seal Installation:
vImportant
If the stub is not held, damage to the pinion teeth will occur.
8. Install dust cover to housing.
9. Install stub shaft bearing annulus onto stub shaft.
10. Place seal protector J29810 onto stub shaft.
11. Install stub shaft seal and stub shaft dust seal over protector and into housing. (Apply a small quantity of grease between seals and on top of dust seal.)
12. Install retaining ring into groove in housing.
Figure 14 - Rack Bearing Installation and Adjustment:
13. Coat rack bearing, adjuster spring and adjuster plug with lithium base grease and install in housing. (See Figure 14.)
vAdjust
With rack centered in the housing, turn adjuster plug clockwise until it bottoms in the housing, then back off 50~ to 70~ (approx. one flat). Check torque on pinion. Maximum pinion preload torque is 1.8 N-m (16 Lbs.In.).
14. Install adjuster plug lock nut to adjuster plug. Tighten firmly against housing while holding adjuster plug stationary.
15. Install rack and pinion assembly into car. (Use appropriate service manual.)
vImportant
Flush power steering system (hoses, reservoir and cooler lines) with power steering fluid - GM Part # 1050017 (or equivalent meeting GM Specification # 985010). Disconnect return line at pump reservoir. (Refer to bleeding procedure in vehicle service manual.) Be sure pump reservoir fluid level is maintained during the flush procedure.
16. Reconnect return line at pump reservoir.
17. Fill with power steering fluid.
18. Bleed air from system.
vInspect Inspect for leaks.
19. Check toe angle and reset if necessary.