Thread: Modified Fairey Overdrive

Or a can of CRC Freeze Off to shrink the shaft.

Originally Posted by 1950landy

Or a can of CRC Freeze Off to shrink the shaft.

That sounds like a good thing. Thanks.... I'll look into that.

I've just been having a tinker, using both some of the suggested cold spray and a little heat.

I like the spray (thanks for the tip!), but in this particular instance, unsurprisingly, heating the casing got the best results. All the same, I went pretty gently: no wish to break anything more than yesterday's favourite Stillsons (*sniff*).

With the casing heated, rotating the shaft became easier - but backward pressure whilst doing so still would not move it. So I began to tap (wallop) gently upon the leverage point at the rear of the shaft, driving it backward with a hammer and driver. It began to move a little with a little caressing (whacking) and a few nudges (blows).

Then, without any drama or sudden crises, the shaft moved back significantly (see photo). Victory in sight. All the same, it hit another spot where it caught a little on the way out. Looking at the scoring on the shaft now, it's no small wonder.....

The layshaft has cleaned up a bit with a polish (still a worry that the thrust bearing washers seem to have cut into it whilst in operation) and I've just placed it in the housing to see if/where it catches. Looks like the front end gets a little tight once it's partially inserted in the housing. London to a brick that's why it was so hard to get out.

After I spent some time cleaning up the front of the housing (with a newly-patented honing tool made from part of a broken wheel brace from a Valiant Charger and a bit of emery paper), the shaft goes easily (but not too easily) into where it's meant to be and can be removed just as easily - which is how it should be. I don't think an engineer would necessarily approve of the methods, but it might work out alright...

Checked the splines on the clutch sleeve on the gearbox mainshaft and at first glance they seem to be alright. Part of the reason this is all being stripped and checked after such low mileage is that I have got hold of some Rocol Anti-scuff paste (thanks to a very nice chap on the UK LR Forum) and I want to put it on the clutch sleeve splines. I'm also thinking about using it for a few more surfaces.

That's it for today.

John

'I'm also thinking about using it for a few more surfaces' ?
Keep it well away from bearings. It will cause them to slip, not roll.

whitehillbilly

So do you think with all the welding you may have shrunk the housing were the shaft fits in.

Originally Posted by whitehillbilly64

'I'm also thinking about using it for a few more surfaces' ?
Keep it well away from bearings. It will cause them to slip, not roll.

whitehillbilly

Thanks for that. I was aware that the stuff would not be the go for bearings, but I was wondering if a very thin film on a shaft would really affect roller bearings running over it. What do you think?