Thread: Viscous Coupling replacement

Originally Posted by PhilipA

This post prompted me to find the one I bought about 6 months ago.

Took me about 1/2 hour "where did I put that flippin thing?"
Finally found it and put it into my in car toolbox.
Regards Philip A

If only you lived around the corner

Gary

Some good progress now it all seems to have come to a halt at step 5. Not sure what I'm missing? Step 6 is done. I have broken the seal and now have a pretty even gap of around 5mm. The VC housing spins freely, but won't move any further away from the transfer case. It seems so near and yet so far!

How to fit a viscous coupling unit

1) Remove front prop shaft

2) Drain oil from transfer box

3) Support gearbox and remove right hand gearbox mount

4) Remove bolt holding Viscous Coupling housing to transfer box

5) Rotate, to break silicone, and remove Viscous Coupling housing

6) Remove flange nut and flange and press out Viscous Coupling

Gary

AFAIK the only thing that could be holding it is the rear output shaft which goes into the rear of the coupling.
Usually the splines in the centre diff wear and jam but maybe in your case they have jammed in the VC.
Get a bigger hammer.
Regards Philip A

Originally Posted by PhilipA

AFAIK the only thing that could be holding it is the rear output shaft which goes into the rear of the coupling.
Usually the splines in the centre diff wear and jam but maybe in your case they have jammed in the VC.
Get a bigger hammer.
Regards Philip A

Even if the splines were worn I wouldn't have thought that would affect the removal of the casing?

Gary

Originally Posted by SteveFarmer

HI

One of these may help

Land Rover Prop Shaft NUT Tool 1 2" Drive DA1119 | eBay

Steve

Are these a particularly thin-wall socket ? - Or shaped differantly?

Either way, it certainly pays to buy top-notch tools when/where you can.

Just nipped out and tried my 14mm spanners on the rear shaft uni joint nuts... both rings fit nice and tight, but neither open end will go on.
The 9/16 works both ends, but pretty loose.

That's what I used when I took of my front prop shaft. (Still buried in the boot)

'95 Classic Vogue SE with working air suspension...and RWD only.

I've got a spare BW cbox lying around... when I checked it, the front VC carrier thingy came off pretty easily. No Brute Force & Ignorance required... Try a bigger hammer or longer levers...

Or, maybe the VC has disintergrated inside itself and bits are jamming the shaft...

EDIT: worst case is.... forgotten to completely undo one bolt... - Don't ask why I suggested that !!!!

The housing complete with VC should easily slip off the splines so there is something not right in there holding it on

Brute force finally the housing off along with the VC stuck firmly in the housing, no wonder I was struggling! Once out I was able to get the bearing puller in place and separate them. The VC is stuffed and leaking gooey silicone....pics to follow. It looks like the silicone is only in the area immediately around the VC and not in the rest of the box. All the oil drained out clean . As for the replacement Ashcrofts are about to get my order £295 + shipping. Hopefully the reassembly will be less arduous than the removal!

Thank you all for your support!!!

Gary