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Hal

Member Since: 04 Jun 2014
Location: Bedford
Posts: 91

MT82 output shaft early symptoms

Can anyone say whether the following are early symptoms of mt82 output shaft failure: every few hundred miles in the last 1000 I get a short 1 to 2 seconds of screech that sounds to me like splines failing. I can feel loss of drive. Trouble is I'm fairly deaf (I wear hearing aids) so figuring out what the sound is and where exactly it comes from is a bit difficult (on the plus side I don't care how noisy my deafender is!). It does come from the front, either axle or perhaps transmission tunnel. I've had the drive flanges off and the splines look like brand new (2011 puma 110sw with 31k miles), which is a shame as that would've been easy to fix.

So, does this match with what others have seen before output shaft failure?

Thanks

2nd Jul 2016 7:42pm

Scoobeenut

Member Since: 04 Mar 2015
Location: West London
Posts: 310

2010 Defender 90 Puma 2.4 SW Santorini Black

When mine failed the only warning I had was a heavy metallic clunk noise when engaging gears or pulling away which only lasted a very short time before total loss of drive.

2nd Jul 2016 8:30pm

Hal

Member Since: 04 Jun 2014
Location: Bedford
Posts: 91

Thanks for reply.

I've got two choices I think:

1. Leave it til something breaks proper
2. Take bits apart til I find the problem. My guesses are in order of easiest to hardest - half shaft into diff, diff, output shaft, xfer box, clutch (broken springs getting stuck), gearbox.

Second option starts to get expensive (have to buy spares, seals, gaskets, tools) and takes a lot of time (months as also got to replace 100m of fence panels, build chicken enclosure to keep out foxes - electric fence may be needed) and got to keep wife happy.

First option could turn out expensive (but everything can be fixed at a cost).

Anyone able to make any suggestions?

Thx

2nd Jul 2016 8:55pm

DAZ110

Member Since: 06 Dec 2007
Location: East Sussex
Posts: 2035

2013 Defender 90 Puma 2.2 XS CSW Barolo Black

My clutch plate springs were loose and made a spreeching noise every now and then. It then slowly got harder to engage gear until I had to have a new clutch fitted.

Last edited by DAZ110 on 3rd Jul 2016 5:26pm. Edited 1 time in total

2nd Jul 2016 9:13pm

Pickles

Member Since: 26 May 2013
Location: Melbourne
Posts: 3782

2013 Defender 90 Puma 2.2 CSW Keswick Green

Scoobeenut wrote:
When mine failed the only warning I had was a heavy metallic clunk noise when engaging gears or pulling away which only lasted a very short time before total loss of drive.

Exactly,....that is what happened to us,..so really, there is no useful timeworthy notice at all,...it just "goes"!
So, whatever the O.P. is experiencing,..it ain't the input shaft.
Pickles.

2nd Jul 2016 9:14pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17338

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

A "screech" sound makes me think clutch (spigot bearing or release bearing) not imminent spline failure. It is unlikely with spline failure that you lose drive and then regain it, once lost it stays lost.

Another alternative might be a split intercooler pipe which will screech and cause a big loss of power, possibly enough to feel like a loss of drive.

2nd Jul 2016 9:16pm

Hal

Member Since: 04 Jun 2014
Location: Bedford
Posts: 91

Gents, thanks very much. I'll check out hoses just in case. Clutch symptoms seem reasonable to me, I'll keep an eye on that - I hasd thought clutch feel had changed recently.

3rd Jul 2016 6:27am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8006

2011 Defender 110 Puma 2.4 USW Stornoway Grey

blackwolf wrote:
A "screech" sound makes me think clutch (spigot bearing or release bearing) not imminent spline failure. It is unlikely with spline failure that you lose drive and then regain it, once lost it stays lost.

Another alternative might be a split intercooler pipe which will screech and cause a big loss of power, possibly enough to feel like a loss of drive.

^^^^ seems more likely to me Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

3rd Jul 2016 7:45am

Jano300783

Member Since: 12 Aug 2017
Location: Zarzalejo
Posts: 3

Well this week I downloaded the transfer to repair it and when you remove it you see the output shaft that comes from the gearbox. The case is that the striation is quite worn and wanted to change it, but there is no way to loosen the screw. So I am giving Sticks of blind since I do not know if it looses right or left.
Has anyone ever taken it apart?

13th Aug 2017 11:47am

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