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rear wheel bearings

Posted: 09 Aug 2009, 14:12
by armyphil
what order do the sleeves go in there is a long and short sleeve?

I cant seem to find a diagram after i stupidily took it all apart then knocked eveything on the floor :evil:

Re: rear wheel bearings

Posted: 09 Aug 2009, 17:39
by PoloSi
Don't know if this helps mate but I've recent;y jus done mine, admittedly I paid a garage to press the old ones out and new ones in as I don't have the correct tools.

From the engine side of the housing it goes:

The wierd metal like shim half circle thingy(sorry no haynes to hand and I can't remember its name)

Ball bearing

Spacer

Roller Bearing

Im pretty confident thats correct, I'm sure someone else can see if it is wrong.

Simon

Re: rear wheel bearings

Posted: 09 Aug 2009, 17:49
by armyphil
i aint got a shim??? wonder if thats the problem but two diff length sleves, cheers anyway Si.

I got my bearings out with a hammer and a brass drift a socket a vice and a lot of sweating lol

Re: rear wheel bearings

Posted: 09 Aug 2009, 18:22
by Grun
Are you sure the shorter 'sleeve' is not the inner race of the roller bearing.
As far as I know, there is only one spacer, which fits between the inner race of the ball bearing and the inner race of the roller bearing.
I've not done a T3, but did a Bay window many years ago.

Sequence to re assemble per Haynes is..
1. Press (Drive) ball bearing (Pressure on OUTER RACE) into housing, fit circlip and seal.
2. From t'other side fit the spacer.
3. Press (Drive) the outer race of the roller bearing into the housing.
4. Then fit the roller bearing inner race and the other oil seal.
5. Place the drive shaft flange face down on a bench and start the assembled housing onto the shaft, keeping it square etc. etc.
6. Now using a tube of suitable diameter to fit against the INNER race of the roller bearing press (drive) the assembled housing onto the shaft.

Pack bearings with grease before assembly and Haynes says pack the space between the bearings as well. (I was taught not to overdo this in my training days many moons ago, as it could lead to overheating of the grease, expansion and leakage.)
Mike

Re: rear wheel bearings

Posted: 09 Aug 2009, 18:29
by Aidan
he don't mean shim he means circlip
the inner bearing is the ball bearing 6207C3 kept in place by circlip, fit this one first. then the seal
outerbearing is the weird size (cheers VW) roller bearing with loose inner race and between the two is the heat treated spacer, fill axle with grease, put in spacer and then fit outer bearing, finally slip in the inner race fit the seal and then fit the shaft

Re: rear wheel bearings

Posted: 09 Aug 2009, 19:37
by armyphil
cheers for that can get onto it tomorrow now another job of the done list

Re: rear wheel bearings

Posted: 09 Aug 2009, 20:43
by PoloSi
Circlip, will put that in my dictionary, cheers.

Simon

Re: rear wheel bearings

Posted: 11 Aug 2009, 10:29
by HarryMann
cheers for that can get onto it tomorrow now another job of the done list

Phil, don't want to knock you back or be negative, but fact is... wheel may still have play in it afterwards, common, because the housing wears in a strange way which is not obvious.
The inner (ball bearing) outer race can move within the housing, even though it seems tight when tapping in, because it can be tight on the sides of housing but housing slightly ovalled top-to-bottom.

PS. Always check & deburr the shoulder in the housing that the inner bearing drives up against, so it sits as securely as possible when finally clamped up with that big nut to 350 ft-lbs (+ next split-pin hole)
If housing supsect, use Loctite beraing fit on the outer bearing's housing bore

Wheel can also move in-out, co-axial with axle (that's a good one!) after job is done, which is considered permissible

Did you find the old bearings worn/broken up or in fact in good condition (common)? If the tracks didn't show signs of wear/dry-running/breaking up (rare) then you may well find situation is as described above

Re: rear wheel bearings

Posted: 11 Aug 2009, 10:32
by HarryMann
Circlip, will put that in my dictionary, cheers.

:)

Americans call them snap-rings I think, but circ(ular) (c)lip is correct here

Re: rear wheel bearings

Posted: 11 Aug 2009, 12:24
by armyphil
the old bearings collapsed when taking them out rollers everywhere, upon fitting today though the bearing housing would not slide up the shaft after a little bit of emery still no luck, going to have another go tommorow because its hammering it down.

Why do you always get one pig of a side!!!! :evil:

Re: rear wheel bearings

Posted: 11 Aug 2009, 12:47
by HarryMann
The old bearings collapsed when taking them out rollers everywhere,

The outer is a plain roller, and although rollers caged, it's a very loose cage, so can easily do that, whilst having been OK in operation (but may not have been) The inner race is separate and as you say may not slide easily up the shaft

You need the axle upright (fixed) and lower the hub onto it, with 3 hands (!) drifting v.carefully the inner race down the shaft if necessary, long thin drift or thinwalled tube, no jumpy off into cage (or jolt it down by dropping whole assembly onto axle flange a few times, hardwood/dead square of course :). Then drop the spacer down, fill void with grease as far as poss, then making sure all the rollers are stuck back out of the way with grease, slide the inner race into place, use a collar/thinwalled tube or drift if necessary. Don't let it come back out before now fitting the drive flange

I doubt that will help much, but sometimes it easy soemtimes I varied method, but that seemed the best way when things got all greasy and difficult. I wouldn't emery the shaft much, just clean it but you could freeze it first with that coldfreeze spray.

3rd time lucky :)

Re: rear wheel bearings

Posted: 11 Aug 2009, 15:09
by armyphil
i might try that actually i tried fixing the whole assembly over in one go, on a hgv or land rover very easy these old veedubs cause me more hassle that enough,

i'll let you know how i get on tommorow though thats if the wife will let me go out and play with "that bloody van again". :D