Repairs

toyota
4runner

#1

Can a rear differential be repaired?


#2

First time question; long time listener and NPR contributor


#3

Possibly.


#4

What is wrong with the diff?


#5

Yes. Unless the damage is extensive enough that it actually broke the housing that holds the differential.


#6

If the housing is undamaged but the ring and pinion gears are damaged then a used unit from the salvage might be a better option as the costs of ring/pinion gears, bearings, seals, and labor on a fairly technical job could be somewhat high.


#7

Rear differential repairs are very expensive. Some years ago I had the bearings replaced on a Chevy rear end at the cost of $440. No gears were damaged. If your gears are damaged, the better approach would be to find a wreck and get the wholes unit. In my case, a whole rear axle assembly would only have cost $750, clearly the way to go if there is significant damage on the gears. Our family doctor had to fix the rear end of his C class Mercedes and it came to $2800!