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Gear Change Graunchy - Cause and a Solution

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Old 04-17-2004, 05:25 PM
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jon928se
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Default Gear Change Graunchy - Cause and a Solution

Paul (UKKid) and I changed the release bearing, pilot shaft bearing release bearing sleeve and the infamous Nylon cup bushing today on his '87 Manual.

The job was in response to an incredibly noisy clutch - in or out and I suspected the pilot bearing.

It turned out that the pilot bearing was shot - Not worn it just wasn't going round.

The Release bearing was on its last legs as well and the release bearing sleeve wasn't bolted to the bellhousing.

Fortunately the pilot shaft was undamaged.

On his way home he phoned me to say that as well as no noise, he could also change gear much quicker and smoothly with no crunches. The stuck pilot bearing was having the effect of the clutch still being engaged (mostly) when the clutch pedal was down.

e was also well impressed with his new MAF but thats not the point of the story.

Moral - before you write off your syncros make sure your clutch is doing it's job properly. cos if you don't your syncros will be toast.

Jon
Black SE

(I'm sure Paul will post the pics.)
Oh and 1 last thing his early '87 manual has no bleed nipple on the slave cylinder - is this normal ?
Old 04-17-2004, 07:17 PM
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Garth S
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A great result from the Dynamic UK Duo. We had all speculated on two of more issues within Paul's clutch - and you found a basket full. Anyway, now that all is well, and the syncros are no longer working overtime, it may not be a bad idea to drain the trans as compensation for its past OTime.
Never saw a 'nippleless' slave cyl. Concealed nipple perhaps?
Old 04-17-2004, 10:33 PM
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UKKid35
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Default Release Bearing

I left Jon with the job of replacing the Release Bearing while I got on with the easier Pilot Bearing job. Here's how he did it:



Once the bearing assembly is compressed the large circular clip can be removed and the bearing will fall away from the pressure plate.

Unfortunately the spec on the Harbor Frieght Pilot Bearing Puller was incorrect, but it was still possible to use just one of the three jaws, and an allen key to keep it in position, to remove the bearing.


Last edited by UKKid35; 01-22-2008 at 08:39 AM. Reason: pics added
Old 04-18-2004, 04:55 PM
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jon928se
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The last time you saw that particular piece of Angle iron it was part of the ultimate flywheel lock.

Jon
Black SE

One day soon Paul gets to work on my 928 !
Old 06-16-2004, 02:29 PM
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Glenn Evans
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30 seconds to change the release bearing? I am impressed!
Old 01-22-2008, 08:32 AM
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UKKid35
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Originally Posted by Garth S
Never saw a 'nippleless' slave cyl. Concealed nipple perhaps?
On closer inspection the nipple had been snapped off - ouch!

Will be fitting a new $50 slave shortly (only a four year delay - not bad for me!)
Old 01-22-2008, 09:09 AM
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marton
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Good luck Paul,
I fitted a new clutch M/C last Saturday & will be trying my new Motive power bleeder (the name sounds like an enforcer for the Mob!) next Saturday after I quickly slip on the new Brake M/C.

Cheers

Marton



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