Swapping diff internals

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ubermeister
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Swapping diff internals

Post by ubermeister » Sun Mar 31, 2013 5:06 pm

I pick up a steel diff for my Vit this morning from someone breaking a GV locally, but I need to put my internals in it as it has 4.3:1 r&p's, and mine has 5.21:1 r&p's in it.
Do I need a special tool to swap the internals over, to set the backlash or something, or is it a case of just undoing the clamps and taking it out of my housing, and then reversing the process to put it back in the steel housing?

Cheers for any help, can't wait to get the truck back on the road.

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Re: Swapping diff internals

Post by Munkee » Sun Mar 31, 2013 5:22 pm

Honestly, Your best bet is to get someone like Rockwatt to do it for you. Especially as I know you got a bargain on the diff! :))

Swapping a diff: You need the back lash BEFORE you remove the diff, you need to prelaod the Pinion bearings after you've set the pinion depth, the re-set the backlash once it's all assembled whilst preloading the main carrier bearings.

I've done it once. I'm swapping ratios, and will not be doing it for a second time.
mud and diesel wrote: ...turns out ive got a robins nest in my overalls, with a chick in so im going to have to leave the little sod for the next 2 weeks

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Re: Swapping diff internals

Post by ubermeister » Sun Mar 31, 2013 5:27 pm

Cheers Steve, sounds like my best bet is to get someone else to do it. What ratio you going for, seems I have some 4.3:1 r&p's for sale.

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Re: Swapping diff internals

Post by jimny-dave » Sun Mar 31, 2013 5:49 pm

x_x I won't admit to having rebuilt a few diffs using the "waggle method" then...

i.e. it feels right... Stealth's done a good few thousand miles since rebuilding both diffs myself after fitting the rear Lockright (pinnion not removed though, just stripped the inards and fitted Lockright) and the front LSD (pinnion and crown wheel all replaced into a steel casing, and combined with the LSD).

Not quite so critical on the front if you've got free wheel hubs on and only use the front diff offroad at slow speeds?...

^#(^ I don't condone following my lead though...

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Re: Swapping diff internals

Post by ubermeister » Sun Mar 31, 2013 5:53 pm

Thanks for the input Dave. I think if I were a littler further down the path of learning to do all the mechanic stuff myself, and had somewhere decent to work on bits, then I'd give it a go myself. As it is, I think I'll be ringing the man and asking him to do it. Got the diff for a song, so don't mind paying a bit to have it done, if only for my piece of mind.
I want a LockRight, too, but I need to save up some more for that.

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Re: Swapping diff internals

Post by jimny-dave » Sun Mar 31, 2013 5:57 pm

Yup, Rockwatt's ^:)^ your man then :-bd

I entrusted my transfer box to him to fit the crawler gears, as I didn't fancy doing that either...
Wandered off as it's so quiet... You know where I am if you want me... Dave :(

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Re: Swapping diff internals

Post by Munkee » Sun Mar 31, 2013 6:01 pm

Got a aset of 4.6s here waiting to go in. Hoping to get my gearing a bit more sensible!!
mud and diesel wrote: ...turns out ive got a robins nest in my overalls, with a chick in so im going to have to leave the little sod for the next 2 weeks

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Re: Swapping diff internals

Post by Richie » Mon Apr 01, 2013 12:41 pm

I got the elusive Rob Storr to do mine , but have also assisted with a few waggle method fitments with Dave. Once to feel the slack you can replicate it, it handy to have a spare standard diff sitting around to to get the feel off whilst your doing it.

R 8)
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Re: Swapping diff internals

Post by jimny-dave » Mon Apr 01, 2013 12:58 pm

Richie wrote:I got the elusive Rob Storr to do mine , but have also assisted with a few waggle method fitments with Dave. Once to feel the slack you can replicate it, it handy to have a spare standard diff sitting around to to get the feel off whilst your doing it.

R 8)
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It's been a while since you've been round and waggled my flange... 8-}
Wandered off as it's so quiet... You know where I am if you want me... Dave :(

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Re: Swapping diff internals

Post by Munkee » Mon Apr 01, 2013 1:26 pm

Backlash is easy enough, it's the pinion pre-load that got me. :shootme:
mud and diesel wrote: ...turns out ive got a robins nest in my overalls, with a chick in so im going to have to leave the little sod for the next 2 weeks

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