Rear Transmission issue

JonR3012 · Jul 26, 2021

Hi All
Am new to this forum.

I would like some advice / ideas - so, driving home from a week away in my 08 110, throughout the week when driving each time I set off I would hear a "pinging / tinny" sound and so thought right when I get back take a look at both prop shafts for damage wear etc. Whilst driving along one day with the window open when going round right hand bends I could hear a definite "tinging" sound at the rear driver side, again put it down to prop shafts. Drove home last night and pulling into the road (300m from home) turning right there was a sound I can only describe as similar to if you missed a gear or the it jumped out of gear. I carried on a a short distance with this sound, managed to reverse onto my drive - by this time the sound had stopped. Did some checks on the TB H/L drive all seems OK.

So am a bit stuck as to what it could be, am thinking maybe rear drive shaft has given up the ghost or ??

Any ideas ??

Cheers

Jon.

marjon · Jul 26, 2021

Props would be the first thing to look at, If they are ok then I guess try to locate which corner it is by jacking up each wheel and turning it.

Noises do travel so don't rule out the fronts just yet

.

J

Wimblowdriver · Jul 26, 2021

JonR3012 said:
when driving each time I set off I would hear a "pinging / tinny" sound

Possibly the parking brake shoes sticking while parked up, releasing with a ping when you first drive off. Could also be brake pads sticking - or starting to break up, in this case you would need to remove the pads for a proper inspection.

tottot · Jul 26, 2021

If a drive shaft broke you would have no drive at all until you put the gearbox diff lock in.

JonR3012 · Jul 28, 2021

Hi All,
Many thanks for the advice, much appreciated. So, jacked her up and had a really good close look around, found that the rear- rear prop shaft joint is on its way out so that I guess contributes to the noise and on talking to another owner who took it for a drive they feel that the TB is low on oil and so will give some transmission noise.
So next question I have some EP90 GL-4 which this guy has suggested would be OK to put in OR should I go with the SAE75W90 API GL4+5 as suggested.
Cheers
Jon

Wimblowdriver · Jul 29, 2021

JonR3012 said:
Hi All,
Many thanks for the advice, much appreciated. So, jacked her up and had a really good close look around, found that the rear- rear prop shaft joint is on its way out so that I guess contributes to the noise and on talking to another owner who took it for a drive they feel that the TB is low on oil and so will give some transmission noise.
So next question I have some EP90 GL-4 which this guy has suggested would be OK to put in OR should I go with the SAE75W90 API GL4+5 as suggested.
Cheers
Jon

Don't forget that the transfer case filler plug is not a level plug for the oil (see attachments), you need to fill with 2.3 litres of oil.

JonR3012 · Jul 30, 2021

Thanks for this, will take your advice, any thoughts on the oil spec question, ie will EP90 GL4 be OK to add in ??
Cheers
Jon

Wimblowdriver · Jul 30, 2021

JonR3012 said:
Thanks for this, will take your advice, any thoughts on the oil spec question, ie will EP90 GL4 be OK to add in ??
Cheers
Jon

Oil specs for the 2.4 and 2.2 Pumas attached. They have the same transfer box, the later 2.2 spec is a bit stricter than the earlier 2.4. I use Castrol Syntrax Universal Plus which is a fully synthetic transmission oil. I go for synthetic because the service interval for the transfer box oil change is 50K miles (although I changed mine at about half that).

Wimblowdriver · Jul 30, 2021

Whoops - forgot the attachments

.

JonR3012 · Jul 30, 2021

Great many thanks for that valuable info.
Cheers Jon

Rear Transmission issue

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marjon

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