Thread: Loose TD5 radiator fan pulley??

Pete, I didn't have any noticeable results as my egr valve hadn't started sticking yet however it was full of black sticky soot, and it doesn't take a rocket scientist to figure out that having that running back through your engine can't be good for it. Others have said that they have had better breathing and increased power but this only comes if the egr had been faulty.

OK, I can't get this outer race out of the cover and I do not want to pull the entire timing cover off for obvious reasons.

Have heard that running a weld around the inside of a race will make it shrink. Any thoughts on this? I have a mig and might give this a go.

Also I thought about using a flywheel puller but the one I have, the centre bolt would have to push against the back of the cover behind the race and I assume that's just a welsh plug so if too much pressure gets applied i imagine it would pop.

Any other ideas?

yes welding the inside will shrink the race after that would be to get a die grinder and grind a slot into it also maybe weld a strip oo metal or a bolt across it so you can then use a bar to lever it out??

oops the oo should be of, a couple of glasses wine did not help

Originally Posted by Frontier1

OK, I can't get this outer race out of the cover and I do not want to pull the entire timing cover off for obvious reasons.

Have heard that running a weld around the inside of a race will make it shrink. Any thoughts on this? I have a mig and might give this a go.

Also I thought about using a flywheel puller but the one I have, the centre bolt would have to push against the back of the cover behind the race and I assume that's just a welsh plug so if too much pressure gets applied i imagine it would pop.

Any other ideas?

I don't think it is good practice welding anything on the TD5, especially with a MIG - to much risk of destroying all sorts of electronic components.

Erich.

If you do weld on it, I would disconect the ECU, battery leads and the 3AS unit (immobiliser green box) at least

They arent that prone to issues with welding but I have heard of a few failures of the 3AS units

Just a suggestion - If you can heat the timing cover if you have a hot air gun, and if you can get hold of a can of spray freezer - perhaps heat the timing cover and freeze the bearing. I've seen that work before.

Personally i'd be a little cautious of welding the race - if the hot race expands enough would it distort the timing cover? On my timing cover the new bearing ended up being loose in the cover and seemed to have thrashed itself to bits fairly quickly.

Well I got the race out. I carefully ran a mig weld around the inside of the race then let it cool. then using a small crowbar on the back of the weld ridge I was able to move out the race enough to get a small flywheel puller behind it and extract out the race.

I've run some 1200 over the inside of the housing where the race sat and it all feels fine.

Now it's off to the local bearing shop to see what they have to suit. Fingers crossed!

Oh, yeah, I disconnected the battery, etc. first!

Cheers, Pete'