Crank Pulley Wobble

[SunlitComet]

REMOVAL

* Tools Required
* J23523-F Crankshaft Balancer Puller and Installer, or equivalent

1. Remove the engine cooling fan. Refer to cooling system.
2. Remove the accessory drive pulley.
3. Remove the crankshaft balancer bolt.



4. Remove the crankshaft balancer. Use the J 23523-E.

INSTALLATION

* Tools Required
* . J 35468 Oil Seal Installer
* . J 23523-F Crankshaft Balance Puller and Installer
* Or equivalents

CAUTION: The inertial weight section of the crankshaft balancer is assembled to the hub with a rubber type material. The correct Installation procedures (with the proper tool) must be followed or movement of the inertial weight section of the hub will destroy the tuning of the crankshaft balancer.

1. Install the crankshaft balancer using the, following procedure:

1. Install the stud to the crankshaft.
2. Thread the stud fully into the tapped hole in the crankshaft.
3. Install the crankshaft balancer (external) over the end of the stud. Align the keyway in the crankshaft balancer (external) shaft with the crankshaft key. Use a small amount of RTV sealant in order to seal the crankshaft balancer (external) key to the crankshaft joint.



4. Install the bearing, washer and nut on the J23523-F
5. Turn the nut to pull the crankshaft balancer onto the crankshaft.
6. Remove the J23523-F.

2. Install the crankshaft balancer (external) bolt and washer.

o Tighten the bolt to 100 Nm (74 ft. lbs.) .

3. Install the accessory drive pulley.
4. Install the engine cooling fan. Refer to Cooling System.

 

[IRQVET]

This topic is interesting because I was experiencing a simular issue, well at least I thought. I was hearing a weird noise from my front end, and the belt was new so I figured it was the pulley. I changed the pulley, which was easy enough, but the noise is still there and it drives me nuts.

 

[SunlitComet]

Maybe this is for you:

File In Section: 6 - Engine

Bulletin No.: 77-60-02

Date: June, 1998
Subject:
Accessory Drive Belt Noise Due to Power Steering Pump Pulley Misalignment (Properly Align Pulley)

Models:
1996-98 Chevrolet and GMC C/K, M/L, S/T; G, P Models
1996-98 Oldsmobile Bravada
with 4.3L, 5.0L, 5.7L and 7.4L Engine (VINs W, X, M, R, J, N - RPOs L35, LF6, L3O, L31, L29, L19)

Condition

Some owners may comment on accessory drive noise.

Cause

The power steering pump pulley may be misaligned with the end of the pump shaft.

Correction

In addition to the normal service for the above condition, it is critical that the pulley is flush with the end of the power steering pump shaft. If it is not, reference the appropriate service manual for proper service instructions.

 

[mikehunt863]

Belt Sqeeking

My belt has been squeeking since i bought the truck six months ago. Tried new belt but still squeeking and not getting worse. I noticed my power steering pump pulley is almost 1/4 inch from being flush with the shaft. Going to get a puller and see if i can push it on more and hopefully that fixes it.