Rear Diff Carrier
Rear Diff Carrier
Author
Discussion

TVRleigh_BBWR

Original Poster:

6,553 posts

243 months

Tuesday 6th May 2014
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Hi,

Anyone got info what bolts you need to remove to drop the whole diff carrier.

Thanks
Leigh.

wooly350i

2,248 posts

238 months

Tuesday 6th May 2014
quotequote all
You'll need to make access panels in the boot if the body is on, from memory I think there were four onto he ally brace bar at the top, then two at bottom front of cradle and must be two at rear. Plus obviously the Huns an shocks may as well come down with it.
Think I used a 100 mm hole saw to make the access holes in the boot then sealed after with ally plate.

TVRleigh_BBWR

Original Poster:

6,553 posts

243 months

Tuesday 6th May 2014
quotequote all
TY,

Was hoping not to have to make holes in the body, will try and remove disc's while its on the car, its just one of the bolts is a little round, so thought it maybe easier with it all down.

adam quantrill

11,679 posts

272 months

Tuesday 6th May 2014
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Get a grinder on the bolt head to make it not round and then stick a smaller hex (not 12-point) socket on it?

Wedg1e

27,038 posts

295 months

Tuesday 6th May 2014
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wooly350i said:
You'll need to make access panels in the boot if the body is on
confused No you don't... two bolts at the front and two long bolts at the back... the ones through the hanging part of the chassis with the almost inaccessible nuts... if you're very lucky the bolts won't be corroded into the chassis rail. Mine were, I had to drill the b4st4rds out:



Also the nuts at the ends of the rear alloy beam, those bolts don't need to come out and a spanner will reach over the top of the shock mount to hold the bolt heads.
The only reason you'd need to chop the boot floor would be if the diff top beam rubber mounts were shot as there's no room to get them out with the shell in the way.

Some gory pics here...

http://www.wedgeneering.co.uk/TVR%20390SE%20p13.ht...

Don't forget to check the two Metalastik bushes in the lower cradle holding the diff up...

Edited by Wedg1e on Tuesday 6th May 22:14

wooly350i

2,248 posts

238 months

Tuesday 6th May 2014
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Ahh, yes ya do if you leave the ally brace in place as we did, raspberry!

RCK974X

2,521 posts

179 months

Wednesday 7th May 2014
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Beat me to it !! I was going to say I managed to get the diff out of mine without cutting holes, but I did leave the ally top carrier in place. Fiddly, but do-able.

BEWARE !! the diff assembly is *VERY* heavy and awkward, especially when you're laying on the floor...and it doesn't balance nicely on one jack (I couldn't get it to anyway)


Wedg1e

27,038 posts

295 months

Wednesday 7th May 2014
quotequote all
wooly350i said:
Ahh, yes ya do if you leave the ally brace in place as we did, raspberry!
John, I'm not sure where you are coming from unless your chassis is different; here's me dropping the diff complete with lower cradle and alloy beam still in place, no holes drilled anywhere...



Edit: RCK, note the axle stand supporting the front of the cradle while the jack lowers the unit, made it a lot more manageable! I'll probably use a scissor table to put the unit back in as I plan to fit the discs and calipers as well so I can setup/test it all off the car...


Edited by Wedg1e on Wednesday 7th May 02:03

RCK974X

2,521 posts

179 months

Wednesday 7th May 2014
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Wedg1e...!SNAP! I actually did a similar trick with axle stands, and a couple of scissor jacks, and also used some wooden blocks as a safety catch.

Having seen your photo,I can't remember for sure now, but I think I left the ally carrier in place....er....perhaps I didn't after all....damn, I'm getting old. I lowered mine to make it easier to get the calipers off/out.

Just thought I would warn TVRleigh that it's not very stable when half out of the chassis ....


The Hatter

988 posts

200 months

Wednesday 7th May 2014
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6 bolts, two horizontal at the front, two on the aluminium carrier and two in the 'U' section low down at the back. No cutting of body required; completed the job on Monday. I had to cut off the lower rear pair of bolts (they're UNF just to be awkward) and also cut through the brake flexi to make life easier. Springs/shocks left in place on the top mount.



It was a pig to get the 2 lower rear bolts back in and tight, but do-able. I replaced them with socket head bolts and then cut down an old allen key to get the right height to swing a ratchet above the brake disc, that did help. There's no chance of getting a socket on the nuts of these bolts either; I had to cut/chisel them off and held the replacement nuts with the tiny-est mole grips I have while tightening from above. I did consider longer bolts and an extension tube but even that wouln't fit.

When I did the rear calipers on the SEAC I did it with the axle in place but had removed the nearside fuel tank. It was still a nasty job but in different ways... caliper mounting bolts and lockwiring was awkward, plus the discs have to come off to get the calipers past the chassis tubes.

wooly350i

2,248 posts

238 months

Wednesday 7th May 2014
quotequote all
Wedg1e said:
John, I'm not sure where you are coming from unless your chassis is different; here's me dropping the diff complete with lower cradle and alloy beam still in place, no holes drilled anywhere...



Edit: RCK, note the axle stand supporting the front of the cradle while the jack lowers the unit, made it a lot more manageable! I'll probably use a scissor table to put the unit back in as I plan to fit the discs and calipers as well so I can setup/test it all off the c...


Edited by Wedg1e on Wednesday 7th May 02:03
It was a few years ago Ian, but yes decided to drill some neatly configured access holes to reach the bolts and bushes from the top, doesn't detract other than having to shift the carpet. Fitted the cut outs to a larger over lay plate and sealed in place, requires a sharp scraper to split the seal, makes me very happy. It's frigging hard tapping these bl00dy phones with broken arm

Wedg1e

27,038 posts

295 months

Wednesday 7th May 2014
quotequote all
wooly350i said:
It was a few years ago Ian, but yes decided to drill some neatly configured access holes to reach the bolts and bushes from the top, doesn't detract other than having to shift the carpet. Fitted the cut outs to a larger over lay plate and sealed in place, requires a sharp scraper to split the seal, makes me very happy. It's frigging hard tapping these bl00dy phones with broken arm
No probs John... I guess you won't be drinking that mucky beer then wink

Wedg1e

27,038 posts

295 months

Wednesday 7th May 2014
quotequote all
The Hatter said:
It was a pig to get the 2 lower rear bolts back in and tight, but do-able. I replaced them with socket head bolts and then cut down an old allen key to get the right height to swing a ratchet above the brake disc, that did help. There's no chance of getting a socket on the nuts of these bolts either; I had to cut/chisel them off and held the replacement nuts with the tiny-est mole grips I have while tightening from above. I did consider longer bolts and an extension tube but even that wouln't fit.

When I did the rear calipers on the SEAC I did it with the axle in place but had removed the nearside fuel tank. It was still a nasty job but in different ways... caliper mounting bolts and lockwiring was awkward, plus the discs have to come off to get the calipers past the chassis tubes.
I think it was Barrington who had plates welded across the bottom of the channel on that lower beam so the nuts would be underneath. It's odd the way they've done it to leave the nuts so inaccessible, almost like they didn't think it through before they started whistle I guess they wanted the bolts as far apart as possible.
I'll give it some thought before I put mine back together; might just go the welded plate route!


B@man

1,486 posts

234 months

Wednesday 7th May 2014
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Wedg1e said:
.... almost like they didn't think it through before they started whistle
Stop making excuses you where correct the first time wink

wooly350i

2,248 posts

238 months

Wednesday 7th May 2014
quotequote all
Wedg1e said:
No probs John... I guess you won't be drinking that mucky beer then ;
Nope not touched beer for a while, lovely assorted tablets though all pretty colours.

littlewooly

60 posts

177 months

Wednesday 7th May 2014
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What wooly means is you must drill holes in the boot if you would like an easier job, it also means you can get an air or electric gun on the bolts, saves faffing about with spanners in that tight gap between chassis and body smile I'm with him on cutting holes in the body, it's only plastic, if it makes the job easier then why not?! smile

RCK974X

2,521 posts

179 months

Wednesday 7th May 2014
quotequote all
Having seen "The Hatter" photo, mine is an early one with trailing arms, so the front end has a single bush... now I look at that photo, I think I did remove the ally arm as well, as it's only two bolts...

I don't remember it being all THAT bad to get at, just a pain to get an open ended spanner located correctly.

Design-wise, I might get attacked by the esteemed members here, but IMHO there's several places on/in the car where access for maintenance was obviously not on the agenda.

With only a V6 at the front, I do sometimes wonder how hard access around the Rover lump is, especially around the sides ...

wooly350i

2,248 posts

238 months

Wednesday 7th May 2014
quotequote all
And if ya having to reach high up into the stomach of the car from under her under garments you end up not only with oily hands but oily arm pits and tits too, give me access holes any day.

RCK974X

2,521 posts

179 months

Thursday 8th May 2014
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wooly350i said:
And if ya having to reach high up into the stomach of the car from under her under garments you end up not only with oily hands but oily arm pits and tits too, give me access holes any day.
You forgot the rest of the list -
Gritty eyes.
Oily face.
Oily hair.
Rust & grit between your skin and clothes....
Dirt under the fingernails that's somehow impervious to all hand cleaners and nailbrishes

Your other half saying things like
"You look like you've been down a coal mine..."
"No WAY are you walking across the carpet like THAT!"
"WTF..."

Wedg1e

27,038 posts

295 months

Thursday 8th May 2014
quotequote all
RCK974X said:
Design-wise, I might get attacked by the esteemed members here, but IMHO there's several places on/in the car where access for maintenance was obviously not on the agenda.
...
You could say that about most cars, especially modern ones. My Connect van, for example: the oil filter screws into the back of the engine block, just above the subframe, so it's impossible to remove it without getting oil everywhere. This was annoying enough on the old van, but the new one has aircon, and the rigid hoses run through the space you needed to remove the oil filter. So now you have to start unclipping pipes, then STILL get oil everywhere...irked
One of our staff members had a Suzuki Wagon-R a few years ago and the engine bay was so crammed it looked like the only way to get the alternator out was either drop the engine or take the cylinder head off rolleyes
I'm told that the only way to change the cambelt on certain engines in the fat-arse Renault Megane is to take the engine off its mountings and move it to the left a few inches (having stripped the driveshafts and front suspension first) banghead
When it comes to holes and blanking plates, the Lotus Esprit was no better: to strip the front suspension you had to remove the footwell carpet, remove a blanking plate and knock the top arm pivot bolt into the cabin!