Came out to find a black rubber pipe hanging from the top of the rear diff. One end attached to a pipe on the diff..the other end just dangling( its got a clip on it). Any idea whats it for and where it should go?? Ta Nik

what truck?

It's the breather - should go into a pipe fixed to the tubular cross member

i reakon its the diff lock pipe lets bet rob £50

K74....and the answer is?

we need a pic! i say diff lock pipe has snapped off the diff lock pump. sent it to me and ill fix it

Thank Chef...currently wrestling with a bottle of wine...will take a couple of snaps tomorrow...any particular view do you want? Ill put it on the ramps and get a good look. The rear diff looks a little "wet",where the transmission shaft enters the diff...Is it a big messy job rebuilding it or just let it weep? Ta Nik

easy enough to re seal the diff, look up on the X member above the axle u will see the diff lock pump

Ok the pipe goes to/from the accumulator to the diff..think its got a banjo going into the diff...Ive enclosed a photo...Re the rear diff..mines a locking rear with a flashing orange light switch to the right of the steering wheel. Just trying to figure out how it works...As i switch my dash switch,it powers up the rear pump to fill an accumulator to pump air somewhere into the rear diff? So in theory, if I switch that switch air should come out of it or does it pull a vacuum? What does it actuate in the diff? Normally I fix bicycles so this is all new to me. Help as ever much appreciated..Nik ps my winter list is getting longerBild entfernt (keine Rechte)

It's a little compressor with a pressure switch. It should cut out at about 4psi, so putting your finger over the pipe should make it cut out. The orange dash light should go solid when the lock is engaged - flashing means 'something' is not working.

any way pay up Rob!

Thanks guys...ill try that blocking test to see if it makes any difference. So that orange switch turns on the compressor so if put the gear box in 4 wheel low (green light 4 wheel drive light on the dash) I should hear it purring and then stop at 4psi. Ta Nik

yeh

I'll get you a barcardi breezer next meet!

Bloody genius's...yep I can hear the pump running when the orange light is on...then finger over the pipe end ,it slows down until it ticked every 2/3 seconds..sounds right? Which begs the question why would mitzy do that when they could simply have the switch activating a solenoid in/on the diff??
Another question..my winter list is getting longer and I need the truck daily till end Oct...is it ok to leave things as they are or am I better off blanking the tube in the diff and from the pump. I didn't even know I had a locking rear diff and prob don't need it 99% of the time but its dead cool!!! Its smoking a bit and thats my first job this winter. Ta Nik

More good news....Raised the rear wheels onto axle stands....in neutral ..rear wheels rotate in opposite directions...then I pumped 5psi into the pipe leading into the diff and result...clunk..wheels turning the same way...so i reckon i can get this to work...The pump does work and when the end of the fractured pipe is sealed the pump stops after 5 secs . Can I just block the pipe going into the diff to stop any poo going in and remove the pump to give it a dose of looking at on the bench..any pit falls to look out for? Ta Nik...stay strong

I've been running mine for over a year without the pump fitted and no problems so far, I fitted a nice long bit of silicone hose wrapped it round the crossmember and sealed the end with a dod of silicone. Not got round to the pump still . Don't forget to tape up the leckie conector.

Cant bear thecae of the locking diff not working...prob never use it but ill give it a bash fixing it...ill keep you posted..ta nik

It sure can get you out of trouble, but I mainly only use mine to make sure it's still working. I've got one which has a broken pressure switch you can have for the postage if you want it to make up a good one (down in Cornwall I think - parts dept has got a little out of hand recently). I won't be down that way till I've had my jab though, so April apparently.

Cheers for the offer...ill get it off the axle first and keep you posted...Until I got the truck i didn't even know what a locking RD was! Nik