Download - Differential Rebuild
Differential RebuildEric ShogrenRachel d’EntremontGreg JonesWalker CrosbyTom Roberts & host of others!
Tools
Must Haves Patience Patience Patience Rear Spring Spreader Large jack stands Seal driver
Nice to Have Inch-pound torque wrench
Why?
Noise – often mistaken for Transmission noise Four types
Drive Noise Cost Noise Float Noise Bearing Noise
Worn pinion/ring gear first three – makes a whine Worn bears – low growl. Sound like a pump try to
pump rocks Broken Pinion Gear Teeth
Basic Steps
Remove rear axle/drive shaftDisassemblyInspectionBearing preload Carrier bearings Pinion bearings
ReassemblyReinstallation
Remove Rear Axle/Drive Shaft
Support the car via the frame – your pulling the rear axle Rear of the car needs
to be higher – meaning more dangerous!
Remove Rear Axle/Drive Shaft
Remove Wheels Brake backing plates U-Joint housing Shock Links Speedo cable
Install spring spreaderSupport banjo on JackRemove Spring Shackles Support the front end of the torque tube
Disassembly
Remove the drivers side axle housing from banjoPull axle and carrier outRemove torque tube
Remove torque tube roller bear race and grease seal Place a 1-1\16 inch, 1/2 drive, socket over the spline
end of the drive shaft. Slide the torque tube down over the drive shaft until
it seats against the end of the socket. Hold the torque tube in a vertical position and gently bounce it up and down until the socket pushes the grease seal and roller bearing race out the end of the torque tube.
Disassembly
Before disassembling carrier make sure everything is marked for re-assembly
Disassembly
A Handy Jig
Disassembly
Disassembly
Disassembly
• Removing pinion bearing double conical race
• Also drive our axle housing races
Inspection – what you don’t want to find
Bearing Preload- prep
Bearing Preload - prep
Install bearing on carrierShould be pressed on, but a rubber mallet works tooInstall races in axle housing and banjo Keep races in freezer & heat housings Best to press them in, but if all else
fails – the old rubber mallet again
Assemble carrier without axles
Bearing Preload - prep
Installing 1st pinion bearing
Bearing Preload
As Rachel says this requires:•Assembling 481 times•Disassembling 482 times
Bearing Preload
Pinion bearing preload is easier Preload done with 2 thin locking nuts 1 1/16th inch socket on end of drive
shaft with an inch-pound torque wrench
Spec: 20 in-lbs
Reassembly
Install 3 grease sealsInstall drive shaft roller bearing raceAssemble carrier with axles Torque carrier nuts to 35 ft-lbs & lock
wire
Reassemble axle housing with the right gaskets combo & without sealant (changes dimensions) torquing nuts to 35 ft-lbs
Reassembly
Install drive shaft roller bearing raceInstall torque tube torquing nuts to 35 ft-lbs and lock wiringInstall roller bearing, speedo gear & lock ringPaint
Reinstallation
Insert drive shaft into U-JointInstall shackles between spring and spring perchesInstall U-Joint housing – 1 whole tube of greaseInstall brake backing plates & brake rodsFill with 600w until it runs out fill hole.