oil pump drive cog

[peteski]

Just changed timing chain (old one stretched like a politicians credibility) on 1.3 mpi. I'm having trouble getting the oil pump drive gear back on the camshaft. For some reason I can't seem to get it started onto the shaft, it came off no problem. No burrs that I can see or feel, well oiled, woodruff not reached, not sure whether a spell in the freezer or oven might help. Any handy hints gratefully received. Thanks

[anewman]

Freezer should shrink it very slightly, no idea if it will help though.

[peteski]

Thanks very much, I'll give it a try in the morning. I suppose in theory I should freeze the camshaft, only got a little freezer though

[peteski]

Success, I ended up giving the shaft a light polish with 800 wet and dry and a wash down. I must have just raised a little lip somehow when I put the chain cogs on. Nice, honest (and hopefully soon quiet) car, flew through its MOT last week without too much preparation. Thanks again for the reply.