Thread: Discovery 1 Drive shaft end float

Did you change the small inner seal that sits basically inside the neck of the axle tube? And the right way round? In theory this should stop the migration of one shot grease into the diff. Is it possible a speed seal is now required on a worn shaft, if it it possible to fit one that is?

Not sure if end float could cause pumping action. Never bothered checking end float myself.

Have just done my front end - re-torque king pins, new inner seals, new swivel housing wiper seals, one shot grease, checked ball joints, panhard etc. This is the first time I've serviced the vehicle since ownership and while doing the work I noticed one shot grey grease from previous ownership has mixed into the front diff oil, via finger throught the filler hole inspection test (yet to be drained and changed). When I first opened the swivel housing there was still sufficient grease in the constant velocity joint.

Not sure how detrimental it might be to have moly grease in the diff oil.

Should also say, I have other Disco 1 vehicles and when having done front ends have not had grease migrating to diffs. Will eventually happen when seals go.

Just to be clear.
The seals in the axle are not to keep the grease in the swivels.
They are to keep the oil in the axle away from the swivels as they are pointed towards the diff.
It sounds like you may have too much grease in the swivels. It only needs to be one "one shot" bag.
Regards Philip A

PhilipA's description is more precise, so I should have indicated that the seal will stop the diff oil entering the swivel; and possibly washing out the one shot. Ideally you might think it was better to have two seals, back to back - one pointed to the swivel and the other to the diff?

Before going to one shot, they used oil in the swivel, was it the same as diff oil?

If the one shot is backed up to a good seal, is it possible through temp change, for example when water crossing, that slight vacuum could pull grease into the diff area if the diff breather is blocked?

I might add, that I have found variance in the quantity of grease in different tubes from the same manufacturer.

Sorry, scrap part of previous. Re-read of jimbob292 says breather clear.

Originally Posted by PhilipA

Just to be clear.
The seals in the axle are not to keep the grease in the swivels.
They are to keep the oil in the axle away from the swivels as they are pointed towards the diff.
It sounds like you may have too much grease in the swivels. It only needs to be one "one shot" bag.
Regards Philip A

Hi Thanks for the reply, i fitted the seal as per the rave and as the old one came out. So the lips are pointing towards the CV joint Yes i used only one tube per CV joint.

Jim

Originally Posted by workingonit

PhilipA's description is more precise, so I should have indicated that the seal will stop the diff oil entering the swivel; and possibly washing out the one shot. Ideally you might think it was better to have two seals, back to back - one pointed to the swivel and the other to the diff?

Before going to one shot, they used oil in the swivel, was it the same as diff oil?

If the one shot is backed up to a good seal, is it possible through temp change, for example when water crossing, that slight vacuum could pull grease into the diff area if the diff breather is blocked?

Hi Thanks for the reply, they used EP90 around 0.30ltr per swivel, i was thinking on filling them both up with EP90 and running for a while until i get get around to replacing the seal again.

jim

Before going to one shot, they used oil in the swivel, was it the same as
diff oil?

Yes same EP90 although you can put 140 in and AFAIK the main reason for grease was the yanks don't like oil spots, as it takes a lot longer for grease to leak from the swivel seals.
Some blokes who used to do a lot of water crossings used to drill holes in the filler plugs and add vents to the swivels, joined to the axle breather , so that oil would not be pulled into the diff area.

I haven't come across the problem of grease in the diff and the main reason (AFAIK) for the seal to point towards the diff is that when on a side slope , you don't want the downside swivel completely filling with oil.

That maybe what happened with yours now I come to think of it, as if the swivel completely filled the oil would then drain back into the axle and take grease with it.
Regards Philip A