AHS
Senior Member
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Hi, I've got a question about a TR4 transmission rebuild. I've never done a TR transmission before and this specific one is CT33xxx. Most of it was in good shape but there was some wear on the layshaft at the rear bearing, which I understand is common. The rear needle bearing also needs replaced. The odd think is that the bearing housing was not pressed fully into the layshaft. It was flush with the end of the layshaft but there was about 1/8" gap at the inside end of the bearing. The drawings I have show a spacer washer beneath the bearing and a circlip on top, and this bearing appeared to have neither. Missing components would explain the extra gap. The bearing housing was pressed in place and wasn't going anywhere, in fact it had to but cut out. The bearing was a made in UK Torrington bearing, and I think it was original. Now that the bearing is out there is not even a groove for a circlip. Is this normal?
Now here's the odd part. The front bearing clearly has a circlip and is slightly below flush. There is no gap at the bottom. I don't want to remove the front bearing because I think it is OK, so I don't know if there is a circlip groove. It seems very odd that the front bearing is not retained in the same manner as the rear.
One more thing - I got a new layshaft but it is .002" smaller diameter than the original. This is enough that there is just a little rattle in the bearing. Have others experienced this? I suppose I'm stuck with this, as the old shaft has some damage.
I'll order a new bearing, spacer & circlip, and I hope it is a press fit like the old one. I don't think I'll be able to use the circlip as there is no groove. Am I assembling this correctly or am I missing something?
Thanks,
Andy
Now here's the odd part. The front bearing clearly has a circlip and is slightly below flush. There is no gap at the bottom. I don't want to remove the front bearing because I think it is OK, so I don't know if there is a circlip groove. It seems very odd that the front bearing is not retained in the same manner as the rear.
One more thing - I got a new layshaft but it is .002" smaller diameter than the original. This is enough that there is just a little rattle in the bearing. Have others experienced this? I suppose I'm stuck with this, as the old shaft has some damage.
I'll order a new bearing, spacer & circlip, and I hope it is a press fit like the old one. I don't think I'll be able to use the circlip as there is no groove. Am I assembling this correctly or am I missing something?
Thanks,
Andy