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Hufflepuff

Member Since: 25 Oct 2014
Location: Hampshire
Posts: 727

Rear A-frame pivot bracket bolt torque

I think that the Haynes manual has got me again :/

It quotes the rear pivot bracket bolts as needing to be 174 Nm. Well that nicely stripped the thread for me on the front one.

Click image to enlarge

It did seem quite a lot I must admit, but then it is a fairly important mounting, and they are pretty big bolts (1/2" I think).
Nothing that the angry tool couldn't rectify, but a right faff as I now need to source new bolts and nuts:

Click image to enlarge

Why can't they just get these important things right in the book.

Cross referencing with the pre-93 Land Rover workshop manual looks like it has a much better value of 115 Nm:

Click image to enlarge

I'm struggling to to find the information in the newer Workshop manual though - it says section 64 for the rear suspension but I can't find any reference to this there? 2005 Td5 90 XS
1989 V8 110 CSW

9th May 2020 6:24pm

sako243

Member Since: 08 Jul 2014
Location: Wales
Posts: 1225

1994 Defender 110 300 Tdi CSW Alpine White

Hmm, makes me question the quality of the ball-joint. I've quite happily tightened mine with a breaker bar with both feet braced against the axle. Definitely more than 174Nm of torque applied to it that way.

Sorry just realised you weren't talking about the ball joint itself

I've normally just done those up nice and tight - they're a fine thread with nylocs so provided it's clamped everything together properly then they shouldn't come undone. If in doubt look up the torque required for the bolt diameter / thread combination - that'll be the definitive source. Ed
82 Hotspur Sandringham 6x6
95 Defender 110 300Tdi

9th May 2020 7:41pm

Hufflepuff

Member Since: 25 Oct 2014
Location: Hampshire
Posts: 727

Yes I should do that. I have a habit of doing everything up way too tight, which means I either break them directly (as in here) or can never get them undone again.

I'm trying to solve the problem with much use of the torque wrench, but that relies on the right information being in the books! 2005 Td5 90 XS
1989 V8 110 CSW

9th May 2020 7:52pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

84 lbft = 115 Nm

Grade 5 1/2 unf bolt 85 lbft -----------Grade 8 1/2 unf bolt 120 lbft

Had the same problem start of the year fond the gross referencing with the pre-93 Land Rover workshop manual with 115 Nm: for two bolts for the rear A-frame pivot bracket bolts

look up max torque for 1/2 unf bolt grade 5 and 8 and pre-93 Land Rover workshop manual torque 115 Nm make sens

LR RAV 1999 to 2002 my supplement needs to be prof read and red pen to add missing texts and sort the bad texts

if Haynes have coped it you will have same problem

9th May 2020 7:53pm

Hufflepuff

Member Since: 25 Oct 2014
Location: Hampshire
Posts: 727

Ah that's interesting, thanks Dorset. I shall be inspecting my bolts for markings from now on

2005 Td5 90 XS
1989 V8 110 CSW

9th May 2020 9:42pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Grade 5 = 8.8 metric --------------------- Grade 8 = 10.9 metric

10th May 2020 7:25am

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