diff extension tube to crossmember mounting

P

pat180269

Active Member
Anyone know the correct stack up of washers and spacers to set the height above the cross member correctly. I appear to have different parts than appear in the manual. I have always suspected this has been bodged.

I have the big dished washer and the big straight washer and three or four plain washers but no spacers. I can turn spacers up but need to know the correct height of the centre line of the pinion shaft above the cross member.

Thanks

Pat
 
Mine has the same problem - it's bodged by the sound of it. Best to get the full mount off a scrapper?

Rich
 
Extension%20Case%20&%20Propellor%20Shaft_jpg.jpg


The thicker spacer under the diff is different on suffix A diffs to all the later ones on the V8, but it does give an indication of the set up on all of them.
 
What's that long cover for is it a heat shield? Mine is a 1974 2200tc I don't have that. I'm not sure but I think where the spacer is mine has a lump cast in the extension tube. I'll take some photos,just fitted back in the car and need to set the height up correctly. Thanks for the diagram. Dont know what 572589 is either?
 
Hi Pat

I posted several combinations of fitment for these from both the early 4 cylinder and the V8 workshop manuals when I replaced all the diff mounting bushes on Lady C.

See here

Might be of some help to you :D

Dave
 
pat180269 said:
What's that long cover for is it a heat shield? Dont know what 572589 is either?
Click to expand...

The firsrt one is a damper, and it seems that the second is something like this too. They were fitted by Rover to cancel vibrations of the diff extension.
 
pat180269 said:
What's that long cover for is it a heat shield? Mine is a 1974 2200tc I don't have that.
Click to expand...

It is a damper and it's only fitted to V8 diffs.


pat180269 said:
Dont know what 572589 is either?
Click to expand...

It's just part of the mounting assembly. The sort of part that Rover added to set themselves above the rest.
 
Hi chaps.

I went to put the crossmember back in this afternoon and something hit me after Harvey pointing out a few errors exist in the workshop manual (the brake pad retaining springs etc).

When I pulled the crossmember out, the bulge part of rubber mount was on top (pointing up), not the bottom (pointing down). I noticed in the picture above, the rubber mount (part 539042) points down. Is this correct?

How it looked when I took it out:



Is this how it should look?




And how I imagine it: the red circle is the diff extension, the blue is the mounting bolt.




Thanks.
 
Hi Geoff,

The orientation in your second and third photos is correct, except the mount fits on the inside of the cross member. In other words, place it inside the well.

Ron.
 
Gotcha. I was going to txt you Ron but I thought I might give you a break ;)

I wondered if the way you mentioned was right (as thats the way it shows it in the manual. You'd think that they would have it the way I mounted it to give some strength ie downwards force of the bracket).

/pulls overalls back on and heads out to the garage/

(I wonder if the diff will stop leaking now that the nose/extension will be positioned at the right height).
 
I've spent the last fortnight on and off trying to get the lower elbow to match up to the hole in the diff extension mount.

ie get bolt 563721 through bush 558851.

http://www.rover-classics.co.uk/images/ ... ng_jpg.htm

problem is, I already have the mount/crossmember bolted in and the passenger side done. I've been lifting the suspension up, trying all sorts of tricks to get the bolt holes to line up. Do I have to drop the crossmember again, get the rear suspension elbows sorted first, then mount the crossmember back in?

Im at my wits end. :evil:
 
I've just removed, reconditioned and refitted my rear suspension and didn't have a problem.

One word of advise : don't tighten anything until you have it all assembled.

I reassembled in this order ( but there are other ways to do it) :-

Attach cross-member to baseunit, and diff extension to crossmember.
Attach front of lower links to crossmember.
Attach elbows to rear of lower links
Attach Dedion tube between elbows ( spread them cos its all loose )
Attach top links to boot sides and top of elbows
Tighten front crossmember,front of bottom links, Dedion
Fit springs and shocks.
Lower the car to the ground then tighten the top links at the boot and elbows and bottom links at the elbows. ( if you tighten these before the car is on the ground you'll likely damage the bushes).

Hope this helps.

pat
 
thanks pat!

I had my terms mixed up. I have the crossmember in, but am struggling to get the drivers side lower link into the crossmember. I didn't take any of the suspension out, so I figure I'll have to drop the crossmember out again, put the lower link in, then put the crossmember back in.

Bugger.
 
So I finally got some time to work on my car. Suspension is back together. I thought it'd be smart to put the handbrake back on the diff and then lift the diff up but there's not enough give in the handbrake cable. Guess I have to at least get the nose extension of the diff up onto the mount and then put the handbrake on. Or do I mount the diff completely and then put the handbrake mechanism on? So utterly frustrating!
 
May I digress this thread fractionally...? I'm putting a V8 diff in a 2000 soon. I know that the mounting point is different (no cross member etc) but is the rubber mount the same, and is it a straight swap? Bolts and everything?

Cheers
 
redrover said:
May I digress this thread fractionally...? I'm putting a V8 diff in a 2000 soon. I know that the mounting point is different (no cross member etc) but is the rubber mount the same, and is it a straight swap? Bolts and everything?

Cheers
Click to expand...

It's a straight swap. (As long as the original 2000 diff wasn't Dunlop braked).
 
harveyp6 said:
redrover said:
May I digress this thread fractionally...? I'm putting a V8 diff in a 2000 soon. I know that the mounting point is different (no cross member etc) but is the rubber mount the same, and is it a straight swap? Bolts and everything?

Cheers
Click to expand...

It's a straight swap. (As long as the original 2000 diff wasn't Dunlop braked).
Click to expand...
Brill. Just what I wanted to hear. So in terms of replacing the mounts, I now know I just need 2000 ones.
 
hello chaps.

I'm on the final leg of my rear brake/diff refurb. Question. What way does the washer go on the bolt that holds the diff nose in place on a V8. This way?



Just that the workshop manual seems to have more of a "cup" washer that cups the rubber mount. I know there are a few different rubber mounts and washer combinations, I just wanted to be sure that I had the washer the right way up.
 
The WM shows the washer that way round. The washer isn't supposed to cup the bush. It's supposed to clamp the metal ring in the centre and allow the rubber to take the load through the outside of the mount. Like this

CIMG6345_zpsfa1679e9.jpg


Dave
 
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