GU front end clunk

[Peggy]

Well put another set of manual locking hubs on with the spacer and egg ring still the same noise

[Peggy]

Read around and sounds like it might be the transfer case chain slipping could and one shed some light on this ? From what I have read they say it takes a lot of power to stretch it and being LS swapped it could well have stretched it

[mudski]

Read around and sounds like it might be the transfer case chain slipping could and one shed some light on this ? From what I have read they say it takes a lot of power to stretch it and being LS swapped it could well have stretched it

Never heard of that, but theres a first time for everything..

[mudski]

You've remove the front tail shaft and checked the Uni's?

[PeeBee]

Read around and sounds like it might be the transfer case chain slipping could and one shed some light on this ? From what I have read they say it takes a lot of power to stretch it and being LS swapped it could well have stretched it

Maybe its how you read it, however a chain cannot slip, even if its stretched. It will either jump a tooth or just clank around until it flies off the sprocket. If anything it would be the sprocket that gets wear in the tooth form, and the chain 'might stretch a little', but I would if there is a chain tensioner of sorts it would take that up. If its loose then the slack side is where you would see the noise being generated, or if really loose it would be jumping a cog, however I would think by that stage it would be making a constant noise.

[mudnut]

I've had two transfer cases on my patrol as a result of having to change out the gearbox. Both have had a Transfer Chain that makes a terrible racket, when engine braking.

[Peggy]

Yeah mate replaced the unis.
Yeah jumping a tooth is what I meant, the sound is like something skipping, that’s why I thought cvs hubs or diff but neither of them haven’t taken the diff out to inspect it but there wasn’t any metal shards when I dropped the diff oil.
Also done the transfer case oil about 300kms ago checked it today and it’s already black and smells

[PeeBee]

I have done a tooth in a diff and you certainly know something is wrong, pretty quick. The baffling bit is your comment now about the oil in the transfer case. There isn't anything inside there to discolour the oil I dont think

[mudnut]

First I've heard of black Transfer case oil. Have a look in the owners manual and see what is required. Some models use Autotrans fluid, and some use Gear oil.

[PeeBee]

I wonder if there has been MOLYBOND added in a previous fill or service and this is carry over to fresh oil, assuming it was fresh oil change?