Differential Rebuild

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Differential Rebuild Eric Shogren Rachel d’Entremont Greg Jones Walker Crosby Tom Roberts & host of others!

description

Differential Rebuild. Eric Shogren Rachel d’Entremont Greg Jones Walker Crosby Tom 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?. - PowerPoint PPT Presentation

Transcript of Differential Rebuild

Page 1: Differential Rebuild

Differential RebuildEric ShogrenRachel d’EntremontGreg JonesWalker CrosbyTom Roberts & host of others!

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Tools

Must Haves Patience Patience Patience Rear Spring Spreader Large jack stands Seal driver

Nice to Have Inch-pound torque wrench

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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

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Basic Steps

Remove rear axle/drive shaftDisassemblyInspectionBearing preload Carrier bearings Pinion bearings

ReassemblyReinstallation

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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!

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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

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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.

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Disassembly

Before disassembling carrier make sure everything is marked for re-assembly

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Disassembly

A Handy Jig

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Disassembly

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Disassembly

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Disassembly

• Removing pinion bearing double conical race

• Also drive our axle housing races

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Inspection – what you don’t want to find

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Bearing Preload- prep

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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

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Bearing Preload - prep

Installing 1st pinion bearing

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Bearing Preload

As Rachel says this requires:•Assembling 481 times•Disassembling 482 times

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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

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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

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Reassembly

Install drive shaft roller bearing raceInstall torque tube torquing nuts to 35 ft-lbs and lock wiringInstall roller bearing, speedo gear & lock ringPaint

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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.