Thread: Thicker rear diff crown wheel on T/C puma?

So it's finally being looked at by the dealer. Took it in 3 weeks ago and it wouldn't make any noise, so they replaced rear diff oil just in case that helped; nope, was whining within 10mins of me picking it up. Of course they were then booked out until now.

Took it back today and the tech guy agreed the whine was real, but "never heard that noise before, if it was the diff would expect it to be constant at all speeds". Also said perhaps the pinion but would start off looking for obvious wear where it shouldn't be.

Left it with them and got a call this afternoon. They greased the shafts but not cured. Then said it sounds like it is coming from both sides so suggest "as a first step" replacing brake pads (I might have misheard but I think they also said the disks). At my cost obviously....

Hmm, now why am I paying for fault finding by part replacement????

Tonight dug out service notes (Townsville) - rear pads replaced and brakes tested, all fine. The whine was there before then and was there after, and that dealer said could hear noise from diff when they put it on their rolling road!

May be an interesting call tomorrow. Don't mind them replacing parts, but at their cost if it doesn't cure the problem.

I had my MY14 90 serviced, non dealer, on Friday, and they changed out the oil in the front diff because it was black.....
It was golden 10K before that..... And it had all the bolts tightened on the centre as it had started to leak around it.

Now I am starting to wonder if through the centre being tightened into the housing, it is now sitting too far into the housing and wearing the splines on the shafts......
Your thoughts gentlemen???


I have 62K on the clock, so now I am wondering what's going to go wrong next.....

I suppose if it fails, it is still under warranty....

It can only be tightened to where it's supposed to be

Originally Posted by Longtimer

I had my MY14 90 serviced, non dealer, on Friday, and they changed out the oil in the front diff because it was black.....
It was golden 10K before that..... And it had all the bolts tightened on the centre as it had started to leak around it.

Now I am starting to wonder if through the centre being tightened into the housing, it is now sitting too far into the housing and wearing the splines on the shafts......
Your thoughts gentlemen???


I have 62K on the clock, so now I am wondering what's going to go wrong next.....

I suppose if it fails, it is still under warranty....

My 2013 Defender had the problem of discoloured front diff oil. I told the dealer at 18,000 km service the oil did not look clean considering the Km travelled. They suggested it had been contaminated but I told them the truck had never been in any water. I suggested shot axle seal or seals were leaking grease into the diff /axle case and mixing with the oil. The dealer disagreed and insisted on contamination.

Anyway, Defender was on holiday at the dealer again recently for a rear main leak and I told them the diff oil was off again. Only 22,000km then and no water work. They checked it and suggested that they thought it was probably leaking axle seals and they needed to be replaced! Now why didn't I think of that?