Catera V6-3.0L VIN R (1997)
Pinion Flange: Service and Repair
Flange Installation Procedure
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Tool Required:
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J 42066 Wheel Bearing Hub Flange Holding Tool
1. Ensure that the drive pinion gear shaft threads are free from burrs.
2. Coat the splines with the recommended rear axle lubricant.
3. Seal the surface of the pinion flange with rear axle lubricant.
4. Install the differential drive pinion flange onto the differential drive pinion gear.
5. Install the differential drive pinion flange nut.
Important: The pinion flange has an interference fit on the pinion gear shaft splines. The pinion flange should only be pulled-into place by
tightening the retaining nut. DO NOT USE FORCE OR HAMMER THE FLANGE DURING THE INSTALLATION OF THE DRIVE PINION
FLANGE ONTO THE DRIVE PINION.
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Gradually tighten the flange nut until the pinion shaft end play is reduced to approximately 0.50 mm (0.020 in).
6. If REUSING the drive pinion flange continue tightening the nut while alternatively turning the pinion gear to seat the bearings until the alignment
marks (1) align. Then, further tighten the nut no more than an additional 5°. Backing off the pinion flange nut to compensate for overtightening the
nut will not properly set preload.
7. If a NEW drive pinion flange is installed, the differential must be removed to set the drive pinion bearing preload. Set the preload without the
carrier installed and with the bearings lubricated to 1.0 to 1.7 Nm (9 lb. into 15 inch lbs.) on the new bearings or 0.9 to 1.2 Nm (8 lb. in to 11
inch lbs.) with used bearings.
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The preload specifications are being approached when no further end play is detectable and when the holder will no longer pivot freely as the
differential drive pinion gear is rotated.
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Do NOT attempt further tightening until the preload is checked.
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Carefully perform the final tightening only after the preload has been checked.
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Minute tightening of the nut adds significant pound inches of turning torque.
