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Anon
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CENTRE BEARING COLLAR REMOVAL

I am trying to remove the bearing, I have ground the two spot welds off the collar & drilled down to the splines. It's still solid, HELP!!!




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Wed 16 May 2012 @ 19:57 Edit this messageQuote this messagePMQuote this message
Anon
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Centre bearing.

Hi Honington,

Have you checked for any more welds, or are the welds you have drilled still holding on to the shaft.
Looking at your pictures the welds seem to hold on a coller, you may need to heat the coller to let it expand before it will move.

Doug.

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Wed 16 May 2012 @ 20:08 Edit this messageQuote this messagePMQuote this message
Anon
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centre bearing.

Hi Honington, a couple of years ago when we renewed the centre bearing on bono's cf we had great difficulty in removing the bearing . we had it in a couple of different presses, but the problem was getting anchor plates to go behind the bearing to allow it to be pressed off without it flying out of the press.We eventually resorted to a thin cutting disc on an angle grinder and cutting through the bearing casing, far enough to allow it to be split with a chisel. regards auld reekie.
Wed 16 May 2012 @ 21:33 Edit this messageQuote this messagePMQuote this message
Anon
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CENTRE BEARING COLLAR REMOVAL

On closer inspection, the collar appears to be an integal part of the bearing trunion. it is not internally splined. we are contemplating the use of a blowlamp and puller.

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Thu 17 May 2012 @ 11:28 Edit this messageQuote this messagePMQuote this message
Anon
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Mud slinger (spot welded pressed steel bit) is an integral part of the bearing on SWB models.

Bearing land is slightly larger than the splines diameter & is about 3/4 inch deep.

Press complete bearing assembly from shaft; can be very tight to start with but once it moves a little it will continue to move.

Polish bearing land with emery cloth and lightly lubricate with oil prior to installing new bearing.

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Thu 17 May 2012 @ 12:29 Edit this messageQuote this messagePMQuote this message
Anon
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Hi Phil, I have removed all metal covering the bearing, we now see that the collar is not a 'stand alone unit' but is machined down to fit inside the bearing land. Doug advised that previously, he has ground & drilled as I have done. is the collar unit infact just pressed into place?

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Thu 17 May 2012 @ 17:17 Edit this messageQuote this messagePMQuote this message
Anon
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Acherly, I've realised that the bearing in the pic looks more like one for a shaft for the diesel engine - mud slinger and collar spot welded together - but the shaft looks like one for a petrol engine where the sleeve of the rear section butts up against the mud slinger.

Diesel -



The centre bearing and support consists of a sealed ball bearing (1) housed in a rubber cushion (2) with an integral mounting bracket (3).

Two mud slingers (4) protect the bearing and an internal collar (5) is retained by a circlip (6).

The front shaft is externally splined and is retained inside the constant velocity joint by a snap ring.

Petrol -



The centre bearing and support consists of a sealed ball bearing (1) housed in a rubber cushion (2) with an integral mounting bracket (3).

Two mud slingers (4) protect the bearing.

The front shaft is externally splined and rear shaft is internally splined.

The two shafts are retained together by a centre bolt, C-washer and lock tab washer.

I'll have a mooch through parts lists to check ...

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Fri 18 May 2012 @ 01:06 Edit this messageQuote this messagePMQuote this message
Anon
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CENTRE BEARING COLLAR REMOVAL

The vehicle is a 1983 280 petrol slant Facelift+ZF4. The front shaft is just splined into the rear shaft, with no retainer bolt or clip.The collar unit will have to come off before the bearing is 'pulled' somehow! more pressure on the 'sykes/pickervant' maybe.

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Fri 18 May 2012 @ 17:08 Edit this messageQuote this messagePMQuote this message
Anon
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Ah. Maybe like the 350 shaft then -



(The centre bearing and support consists of a sealed ball bearing housed in a rubber cushion (1) and protected by grease retainers (4) and a mud slinger (3).

A retainer (5) and clip (2) secure the cushion in the U-shaped support that is bolted to a bracket on a crossmember.

A dust seal (6) protects the shaft splines.)

Afterthought: whether or not the rubber cushion is bonded to the bearing like SWB models (maybe a later modification that I've not come across before) the bearing & collar press off together on slide-apart shafts.

Might need some abuse of a S-P puller ... last one I did needed a bearing separator used with a 2-leg puller hooked over the separator through bolts, ram would up tight then a hefty wallop or three on the separator to start the bearing moving.

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Fri 18 May 2012 @ 17:41 Edit this messageQuote this messagePMQuote this message
Anon
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Centre bearing removal

Job done! a fellow veteran has a garage, a plow torch+ 10T press did the job.The collar was seperate but very hard to define whilst insitu. we did have one problem, the mud slingers on the new bearing are unattached, the front facing one is secured when the bearing is pressed into place. the rear facing one is not because the collar rotates as it's pressed on over the splines.we had to prise the slinger away from the bearing in two places, dislodge the rubber (not bonded) then mig weld it, I thought the rubber might go up in flames. as it happens, only singed (DIY MECs) please note, tighten front flange before centre mount bracket.

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Tue 22 May 2012 @ 19:36 Edit this messageQuote this messagePMQuote this message
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