Spigot bush or release bearing

Technical questions and answers
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Tups93
Posts: 17
Joined: Tue Aug 02, 2016 2:37 pm

Spigot bush or release bearing

Post by Tups93 »

Good evening all,

I have a noise when my foots not on clutch, put foot on clutch noise goes away, been told it's spigot bush and its a common fault.

Will this do any damage or do I need to get it seen to asap?

Is there any other signs of spigot bush other than noise? Or could it just be a noisy release bearing?

Either way I know it's a gearbox out job and I'm as well replacing clutch when I'm at it or am I better just doing it all when it's that stripped down?

Cheers
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Geoff
Posts: 599
Joined: Sat Oct 29, 2011 2:21 am
Location: Leicester UK

Re: Spigot bush or release bearing

Post by Geoff »

Common noise on the LT95 - mine's been that way for 19 years - turn your stereo up.
2 1981 Stage One 109 V8 SWs
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Tups93
Posts: 17
Joined: Tue Aug 02, 2016 2:37 pm

Re: Spigot bush or release bearing

Post by Tups93 »

Cheers for that, that's put me at ease a huge bit.
map1275
Posts: 1076
Joined: Mon Jul 21, 2008 2:48 am
Location: Brisbane, Australia

Re: Spigot bush or release bearing

Post by map1275 »

If you put your foot on the clutch pedal and noise appears then it is at the clutch end - load is applied to the release bearing, no load to box.
If you put your foot on the floor and noise is present then it is at the gearbox end - drive is now connected and load is applied to the box, not the clutch.


Engine out is the usual means, not box unless you like living dangerously.
udo1-ton
Posts: 33
Joined: Fri Nov 28, 2014 3:59 pm

Re: Spigot bush or release bearing

Post by udo1-ton »

Sorry, I can't believe the spigot bush is noisy when your foot is on the pedal.
I had the same noise in my LT95 box. At least I discovered worn bearings on the layshaft. While repair I found out the thickness of the distance shim was the reason for the failure. Due to a lack of axial preload the bearings became noisy.
I know, it's a lot of hard work to get the box off ...
Tups93
Posts: 17
Joined: Tue Aug 02, 2016 2:37 pm

Re: Spigot bush or release bearing

Post by Tups93 »

The noise goes away when I press clutch down.
udo1-ton
Posts: 33
Joined: Fri Nov 28, 2014 3:59 pm

Re: Spigot bush or release bearing

Post by udo1-ton »

Oh, oh, I fear it is as I wrote in my post above: worn layshaft bearings. :(
Tups93
Posts: 17
Joined: Tue Aug 02, 2016 2:37 pm

Re: Spigot bush or release bearing

Post by Tups93 »

So are we talking about work needed on the gearbox then?
udo1-ton
Posts: 33
Joined: Fri Nov 28, 2014 3:59 pm

Re: Spigot bush or release bearing

Post by udo1-ton »

For that job the gearbox has to come off. That's a heavy thing, I think more than 150kg.
When it's on the work bench, the job gets easier... 8)
When I repaired my LT95 box 2 years ago, I first took the engine out of the chassis. I think after the repair it is easier to fix the engine to the box than the box to engine.
There is an overhaul kit available:
http://www.shop4autoparts.net/Series/Ge ... L_KIT.html
Here is a link of my introduction thread with pictures of the LT95 overhaul:
viewtopic.php?f=7&t=1945
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firemanshort
Posts: 378
Joined: Fri Feb 10, 2006 2:42 pm
Location: Loudoun County, VA - near Wash DC

Re: Spigot bush or release bearing

Post by firemanshort »

The layshaft bearing on my LT95 has been noisy since I bought my truck - over 10 years and 50K miles ago. At first, I was really anxious about it. But now - I just live with it.

I have been told that even with new replacement bearings, there remains some noise due to the design.

P.S. - Another way to tell if it is the layshaft is to place it in 4th gear. 4th is a direct drive gear and the layshaft is not engaged - and does not make noise.
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Firemanshort
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Virginia, USA
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