Tuesday, June 3, 2014

Regearing the rear

On the way to work, running around 50km/h and hit a hole on the road. Heard a very loud bang from underside and no acceleration at all. Hitting the skinny pedal, rev increases but she is slowing down. Tried to switch 4x4 part time, successfully. Drive further slowly and heading to parking space and parked in.

After stopping, changed gearshift lever from D to R got a Another BANG again and no reverse. R to D - bang, D to R - bang :( she can not move at all. Called a friend for help and he arrived shortly. When I change gear, he inspect underside and said rear drives haft is turning, probably pinion gear teeth damaged and after short discussion we decided to open there. Opened rear diff and found a mess. The cross shaft was broken at bolt hole and cross shaft bolt broken also. One of spider gears smashed into pieces. Cross shaft slide to side and stopped against diff cover, so carrier can't rotate.


Previously I bought a ring pinion and master installation kit for re-gearing my rear end, now a time to install them.  Removed damaged parts and we need to move to shop to repair. We can drive by front axle, putting t-case on 4x4 part time. The problem is, if we left rear diff without spider gears, axle shafts will move inside and c-clip will drop. Then tire will be free and move outside with the axle shaft. To prevent axle shaft movement, we have to add something between side gears.  Found a solution and did. After short test drive, everything seems okay and we finally reached to workshop located 10km.



The old carrier is an open diff carrier, moved away.



Friend have a Chrysler 8.25 27 spline axle with trac lok and we decided to install near gear set on this carrier.


ring gear installed, bearings pressed and seals installed. Almost there.



The final pattern - coast side

The final pattern - drive side

to install a cross shaft, tooth shaved a little.




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