Apparently I should have this one… is that right? Hi. Which thrust bearing should I have for my 1972 Late Bay? I think I’m having a bit of trouble…. I have a Sachs one in at the moment, clutch arm spring is fine, cable isn’t tight, plenty of free play at the pedal, but as I was setting my timing up I sensed something wasn’t right, so I have the pulley a tug and *clunk*. Measured it and now endfloat has appeared. It was only set recently at 0.10mm, engines out again. Looking at the bearing, some one said it the wrong one?… Too wide? But it’s the one jk sent me for a late bay…
That’s a clutch release bearing on the gearbox nothing to do with the engine. maybe you didn’t tighten the flywheel nut up tight enough and it’s come loose
You need to check it. If the flywheel is coming loose, it will trash the end of your crank. Nothing to do with the release bearing.
Lock the flywheel, get a 3ft bar, stand on the bathroom scales and heave until you get 6 stone heavier (or lighter)
Either you made a mistake on the first shimming or the case had more wear than you expected and the bearing and/or dowel pin is loose in the case. Or one of your shims was dished and put the measurement off. Or your agricultural scaffold pole on the gland nut wasn't up to it and the flywheel is loose.. or the flywheel dowel pins were seized and sticking out too far at first until they moved in. Or the holes the flywheel dowel pins went into are oval and the flywheel waggled itself loose (happens when the flywheel has been loose before in the past).. In any case the gland nut wont be very tight now. Easy to check. I drove around for ages with 0.15mm end float as setup when I built it owing to CBA buying shims to stack up to make it 0.06mm smaller. It stayed the same for all the 27000 miles the engine ran for however, it didn't suddenly jump. It was something you failed to worry about....
It was align noted with oversize bearing. The dowels were fine. I have no idea. I’m at work now, digging in the hot sun. Will look later…I did loctite the gland nut. Thanks.
That could be interesting to undo. One of your other threads went on and on about a double thrust – what did you end up doing?
I suppose if the camshaft was stiff because its endfloat was too small and it was rotated just wrongly with the helical gears tightly meshed on the crank. Then it could have held the crankshaft from moving axially on the original setup and produced misleading end float measurements. But pushing a bit harder would have moved it, or turning the flywheel a bit in the right direction.. Now its freed up after running the engine for a while the camshaft gear rotates out of the way as you pull and push the crank. I have to admit that when I found a bearing that was a little tight I just hit the offending shaft with a soft hammer in the right direction until it wasn't tight..
