i found out while on a rolling road today that my saff 4x4 is now 2wd,theres no drive to the front wheels.
whats causing this?
i guess the centre diff but how can i diagnose it? and how big a job is it to change?
thanks

 

i know this may sound a stupid question but has it still got all the 4x4 stuff? many get converted to rwd. or have the front shafts fallen out at some point??

 

viscous coupling centre diff has failed, need replacing/fixing or new gearbox..

steve

 

is it much of a job to change the centre viscous coupling?are uprated ones available?

 

you can get "pumped up" versions from the likes of bara motorsport

 

Make it RWD, ie REAL wheel drive!!
tabetha
ps someones phoning me friday night who has a 4wd breaking with a refurbed box.

 

ive searched for bara stuff on the web but not found nothing outside this forum.anyone have contact details for bara motorsport.

anyone ever changed a viscous coupling?i'd like to know if its do'able.


just spoke to a fella on the phone who has a s/hand transfer box.whats it worth?any idea's im thinking maybe offer him £50

 

Q,if i lift the vehicle on a 2 post lift so all the wheels are off the ground and spin a rear wheel should the fronts move?

 

I stripped and re built an mt75 box mate, you have to take the rear casing off to do the coupling, its fairly major strip down and re-build, but nothing too technical. I had a realy good viscous coupling up until last week when a mate took it away with some other spares! i could see if he still has it?

 

thanks but i think ive found a transfer box,can it be changed in situ?

 

ill have alook at my casings in the shed if it ever stops raining, and let you know

 

if its now rwd then why are u moaning??? i wish my 4x4 did that on its own. i had to convert it insted.
lol

 

ive just travelled over 100 miles to discover what was thought to be a transfer box is a front diff.
gonna attempt to strip it out in situ tomorrow.

 

box is easy

 

is there meant to be oil or something inside the vc? mines dry as a bone even a little rusty.

 

YES, this is where the word viscous comes from, a HYDRODYNAMIC friction between two surfaces to transmit a appropriate designed in amount of torque from one surface to another, usually using high viscosity silicone fluids.
tabetha

 

ive got another vc i want to put it back together tomorrow but ive damaged the steel breather pipe inside the transfer box section.can i leave this part out?

 

mine had done this too

was at TOTD and front wheels werent spinning

it viscous coupling and cts do them for around £250 and about £50 fitting just have to take your box to them
even as VC has gone and rwd ,mine seems to be 4wd at times on the road
its not just a case of it being rwd now ,if you want it rwd you will have to convert it using 2wd parts .

hope this helps

my escort cossie done this and im thinking of going 2wd conversion

 

anyone got a knackered mt75 in bits?