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I've found that my 05 trailblazer is leaking power steering fluid from the rack and pinion. I was ready to order a complete rack assembly when I discovered a new kit for replacing the stub shaft only but I can't find any info on the procedure or tools required. Has anyone done this repair yet? Its been a while since I've done work like this and I would like to get any help in advance of getting into it. Thanks!
 

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Here's the procedure from the shop manual

2005 Chevrolet TrailBlazer - 4WD | Envoy, Rainier, TrailBlazer, Ascender (VIN S/T) Service Manual | Document ID: 1426367
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Steering Gear Stub Shaft Seal and Bearing Replacement
Tools Required
J 29810 Stub Shaft Seal Protector

Disassembly Procedure




To remove the rack and pinion steering assembly, refer to Steering Gear Boot Replacement - Off Vehicle .
Remove the adjuster plug lock nut from the adjuster plug .

Remove the adjuster plug from the gear assembly .
Remove the adjuster spring and the rack bearing .



Remove the retaining ring from the valve bore of the rack and pinion gear assembly.
Remove the dust cover from the bottom of the rack and pinion gear assembly.
Important: The stub shaft must be held to prevent damage to the pinion teeth.

Remove the hex lock nut from the lower end of the pinion and valve assembly while holding the stub shaft with a 14 mm crowfoot wrench.



Important: Do not hammer or pound on pinion or valve assembly. This will cause damage or loosen the drive pin.

When performing the following procedure, do not remove the pinion and valve assembly from the rack and pinion gear assembly.


Press the pinion and valve assembly only far enough to allow removal of the stub shaft bearing annulus and the stub shaft seal.
Using an arbor press, press on the threaded end of the pinion until removal of the following items is possible:

7.1. The stub shaft

7.2. The stub shaft seal

7.3. The stub shaft bearing annulus assembly

Assembly Procedure



Important: The stub shaft must be held to prevent damage to the pinion teeth.

Install the hex lock nut onto the pinion while holding the valve stub shaft.

Tighten the hex lock nut to 22 lb ft.

Install the dust cover to the rack and pinion gear assembly.



Install the stub shaft bearing annulus assembly onto the valve stub shaft.



Install J 29810 onto the valve stub shaft.
Lubricate the stub shaft seal with grease.
Install the stub shaft seal into the rack and pinion gear assembly.
Install the retaining ring into the groove in the rack and pinion gear assembly.



Lubricate the following items with lithium base grease:
8.1. The rack bearing

8.2. The adjuster spring

8.3. The adjuster plug

Install the following items into the gear assembly:
9.1. The rack bearing

9.2. The adjuster spring

9.3. The adjuster plug

Turn the adjuster plug clockwise onto the rack and pinion gear assembly until the adjuster plug bottoms in the rack and pinion gear assembly.
Turn the adjuster plug back 50 degrees to 70 degrees.
Check the rotational torque on the pinion. The maximum pinion preload torque is 16 lb in.
Install the adjuster plug lock nut to the adjuster plug.
Finger tighten the adjuster plug lock nut while holding the adjuster plug stationary.


Tighten the nut to 50 lb ft.

To install the rack and pinion assembly onto the vehicle, refer to Steering Gear Boot Replacement - Off Vehicle .
Important: Flush and bleed power the steering system (hoses, reservoir and cooler lines) with power steering fluid GM P/N 89020661 or P/N 89021184 or equivalent, meeting GM Specification number 9985010.
 
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