Differential Repair

[rees_A]

Last thing I need to get sorted on my car is the differential.

Symptoms -

When accelerating hard and taking foot off accel., I get a 'bang' from the rear diff. I'm guessing its sick and needs replacing or repairing.

Does anyone know of a mech who can repair diffs? or has any idea of what the fault may be.

Cheers,

Alan

 

[grober]

propshaft

Could be a flexible coupling on propshaft on its way out. Or the rubber bushes on the differential mountings have gone soft. Diffs tend to growl all the time or on the overrun especially . they dont bang as far as I know. Rebuilding a diff is a specialist repair requiring special tools etc. not a DIY or mechanic round the corner job IMHO.

 

[Dieselman]

Go under the car and grab the propshaft and push it up and down to check for play either at the flexible couplings or the differential nose bearing.

I would guess that the diff isn't the problem as has been said they tend to wear the bearings first so make a whining noise.

There is no reason why a diff can't be repaired, after all it's only a set of crown gears and bearings.

 

[nigel cross]

Does this happen all the time,or only after a lot of use of the clutch in heavy traffic ? The reason I ask is that I had a similar problem and it turned out to be the clutch on the way out.
:bannana:

 

[Satch]

The last thing you want to do is get the Diff changed. Check the cheaper sources of misery already mentioned first!

 

[zishan03]

Could be a flexible coupling on propshaft on its way out. Or the rubber bushes on the differential mountings have gone soft. Diffs tend to growl all the time or on the overrun especially . they dont bang as far as I know. Rebuilding a diff is a specialist repair requiring special tools etc. not a DIY or mechanic round the corner job IMHO.

My diff sounds like it is growling when I move off on a slight incline, it was changed by merc under warranty once for what turned out to be no reason and I cant remember if it did this before, any chance the growl is normal? sometimes it does it on flat ground too when moving off.

Zishan

 

[rees_A]

No noise at all from diff. I've had the front doughnut replaced and mech has checked prop for play and all seems fine. Could it be a driveshaft? Oh, it makes the noise all the time when under quite hard accell and lifting off quickly, i.e. when load is applied to rear and released quickly

 

[Ian B Walker]

Just a thought but is one of your hand brake shoes binding? Happened like that on the red shed once, I had horrid visions of major problems but when I backed the shoe off a turn it ceased.

 

[rees_A]

Don't know on that one.....I've had a service done recently, I'll ask if he adjusted rear shoes...

 

[big x]

Sounds like the centre bearing on the prop shaft.Starts off growling then as the bearing breaks up over time vibration under load gets worse as the prop shaft becomes unbalanced.

adam

No noise at all from diff. I've had the front doughnut replaced and mech has checked prop for play and all seems fine. Could it be a driveshaft? Oh, it makes the noise all the time when under quite hard accell and lifting off quickly, i.e. when load is applied to rear and released quickly