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Duffs

Member Since: 19 Apr 2014
Location: Northumbria/ Cumbria/ Borders
Posts: 48

Prop shaft balance and correct bolts?

What do you think of this ? Prop shaft balance put back together with this, 500 miles and ouch! What is the correct bolt and tension needed to do it correctly. Any advice welcome chaps :0)

Click image to enlarge

Could you get clutch slip start if you rebalance the props? I am getting slip in 5th/ 4th on a gradient if I apply some acceleration. Love my new project, already think it will be a steep learning curve

love this Landrover ! 2001 DEF TD5 County

Last edited by Duffs on 18th May 2014 10:51pm. Edited 2 times in total

18th May 2014 7:11pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17373

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Correct bolts are 3/8" UNF with Nyloc nuts (do not use setscrews), grade 8.8.

Propshaft balance cannot cause clutch slip.

18th May 2014 9:41pm

Duffs

Member Since: 19 Apr 2014
Location: Northumbria/ Cumbria/ Borders
Posts: 48

Thank you blackwolf for advice and spec, much appreciated. Thought the vibration 50-60mph up hill was props, but likely clutch now. Had a go at props because slip in .4 and 5th was not obvious before now. 2001 DEF TD5 County

18th May 2014 10:39pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17373

If you can't track it down to anything else, you could try fitting a double-cardan prop (similar to a Disco2 but unfortunately a different length) at the front.

It is food for thought that on the D2 LR fitted a DC prop at the front to reduce the vibration cause by the transfer box output flange and the front diff input flange not being aligned. On the Puma, since the engine is raised at the front the misalignment is greater, but a standard prop is fitted.

For some inexplicable reason some Pumas seem worse than others, but in some cases fitting a DC prop (which you can buy from Devon 4x4) will make a surprising difference.

You can of course test (if you haven't already) by running with no front propshaft fitted and with the centre diff locked. If the vibration is gone, chances are it is the front prop misalignment issue.

19th May 2014 7:44am

Diablo

Member Since: 26 Oct 2011
Location: Basingstoke
Posts: 335

1984 Defender 90 200 Tdi SW Keswick Green

That isn't even a Nyloc on there! Wouldn't be surprised if it came off pretty quickly!

19th May 2014 1:03pm

Tiger

Member Since: 06 Jul 2012
Location: Wales
Posts: 2265

Quote:
Thought the vibration 50-60mph up hill was props

Can I advise that a very cheap thing to do is to properly adjust the handbrake to eliminate it before you look for more expensive fixes.

19th May 2014 1:09pm

Duffs

Member Since: 19 Apr 2014
Location: Northumbria/ Cumbria/ Borders
Posts: 48

Cheers chaps for the suggestions, it will keep me busy. I suppose it is a case trial and elimination. Least I can fit the correct bolts to start. 2001 DEF TD5 County

19th May 2014 4:40pm

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