748 Pushrod/control Pin. To Spin Not Not To Spin?

Discussion in '748 / 916 / 996 / 998' started by Chris.King1, Nov 6, 2018.

  1. Ok, just installed the new pressure plate with bearing (SKF) already installed. Something I have never really thought about. Is the pushrod meant to spin a little?...as you can see the pushrod control pin slightly spinning.

    On idle, when you look at the pushrod control pin, sat in the bearing on the pressure plate, it spins very slightly, hardly anything. Give it a few revs, and you can see the pushrod control pin spinning inside the bearing. It spins nowhere near the same rate has the pressure plate when winding on the throttle. Obviously does not spin when clutch engaged.

    I was told this is quite normal. Something I have never considered though.

    As usual on these, the original pushrod was stuck inside the control pin and the control pin was stuck inside the bearing on the old oem pressure plate. To me, I could see why it wouldn't spin due to them being seized. But after a new pressure plate & bearing (SKF), new o rings on push rod (thanks exige), pushrod lightly greased at slave end, bit of red castrol grease on o rings, lightly greased inside the control pin, and control pin lightly greased to ease it into the bearing. It seems everything is nice and fresh and works a treat....but never notice the control pin slightly spinning, and possibly causing the pushrod to spin?

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  2. At some stage in time, not sure which model, the clutch push rod gained a locating pin through it at the slave cylinder end, I believe to stop the push rod spinning in the slave cylinder. The clutch push rod fit in the top hat cup at the clutch pressure plate/bearing end has always been tight so I expect to see the bearing rotate. Andy
     
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  3. Thanks, thats what I was thinking, if its so tight, and it was to get the top hat into the bearing and pushrod into top hat, then it has to slightly spin. Also considering heat build up. Mine is pre-pushrod locating pin. It runs lovely, much smoother. Just need to bleed the slave now, as it has a slight bit of air in, from when the parts were removed.
     
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