Single rail with overdrive. I want to replace the pilot shaft bearing. I understand that it can be tapped out using brass rods. What I can't find out is weather this can be done with the lay shaft in place. I've searched and watched numerous Utube videos only to find complete tear down info. I don't want that- just the front bearing. The trans ran fine all last summer.
Any way to get a slide hammer hooked into it?
In reply to eastpark :
It's free of the case and will slide out until the washer and c-clip on the shaft bottom out on the inside. The only thing I could get a grip on would be the groove for the c-clip. I need to go ahead and get the top cover off. I'm pretty sure that I can reach it with a brass drift. Edit: I see no way that the lay shaft could interfere with that bearing.
It has been almost 50 years since I did British transmission work. I suggest The MG Experience forum. Loads of knowledge by DYI British car enthusiasts.
If the gearbox internals are similar to a TR6, I believe the large counter cluster gear will block the input shaft from sliding out. You may need to remove the layshaft and drop the counter gear down slightly, being careful not to drop the thrust washers out. I may be wrong so definitely take the top cover off and have a look.
In reply to JoeTR6 :
I think you are correct from what I've read. I'm happy to leave the input shaft in. It's the bearing I want out. I'll look tonight.
In reply to outasite :
First place I looked. I'm on the Triumph Experience.
In reply to NermalSnert (Forum Supporter) :
It seems to me like you're going about this the hard way rather than just rebuild the gearbox.
I'll grant you that when I open up a gearbox and lay the parts out I always find a bearing or gear etc that needs replacing on top of whatever I opened it for in The first place.
I just clean the box as well as I can then lay out a length of white butchers paper. As I remove parts I stack them on the paper the way they come out.
Sometimes making notes on the paper as to the process or steps.
In reply to frenchyd :
You make a good point. If the input shaft bearing is shot, I'd hate to think what the layshaft bearings are like. But if you are just trying to get a few thousand miles out of it, it's worth a try to replace the input bearing.
I'll let y'all know how it turns out!
I easily drove the bearing out with a brass drift using the slot in the case. There were normal tiny bits when I drained the oil, the tail shaft bearing is smooth and tight, everything looks good inside. So, I'm going to replace that bearing, rinse the trans out with mineral spirits then cheap gear oil and send it. This car was restored 23 years ago and as near as I can tell from the records not driven very much. The front pilot shaft oil seal is a scroll seal. So my theory is that sometime over the last 23 years enough moisture got past the scroll seal to make a rusty spot. That makes me feel better. Might be total BS too
Not interested in going down a rabbit hole that will keep it scattered all over the shop for a year.. The original goal was to pull the engine and trans to do oil seals. Yes, I'm replacing the throwout bearing. I'll show it mechanical empathy as needed while enjoying the back rouds this spring.
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