1.6td cam belt trying to throw it's self off

[millebmac]

Firstly hello to every one on this forum I have gleaned lots of useful information to help keep my 1990 1.6td california on the road, thank you.
I am now after some help with a problem. my timing/cam belt is trying to throw its self off its pulleys (succeded once) it is fraying on the outer edge as the tensioner trys to hold it on!

The problem started when the injection timing was ajusted (by a Diesel specialist!) by turning the pump a few degrees, they insisted this could not cause the problem and something else had gone ie the tensioner, so new belt tensioner etc, etc, fitted, still problems, so back to mechanic more bits replaced checked supposed to ok untill....... the belt gives up a few miles from glastonbury and destroys the engine, engine has now been rebuilt by the engine shop and the injector pump and injectors rebuilt by a specialist, everything is now back together rebuilt engine, pump, new tensioner, new belt etc, etc,.......the belt is still trying to come off...... Help ! Please!

[caveman]

I would pull the pump to make sure ,by having loose bolts at some point, worn the pump bracket to the extent that the bracket is letting the pump hang at a slight angle.

[armyphil]

Check your other pulleys to see if they run in line to, that's sometimes the case. But.check your FIP give it a wiggle

[Damien]

Check that the pulleys are in line with a straight edge then spin them 1/4 turn and check again and so on to make sure they are not bent. I had similar issues with a 16v punto that the belt snapped on, one of the pulleys was ever so slightly bent pushing the belt off.

[millebmac]

thanks, I will give the straight edge thing a go and see if I can spot anything out of whack.

[Mog]

Mine was doing the same thing. The injection pump was out of line with the other pulleys. Worth checking.

[millebmac]

Hi mog
you're right everything points to the pump, but I can't see how there is any adjustment, it appears to bolt straight on to a solid bracket.
Due to the the weather and me being away I have not been able check the alignment out as suggested earlier in this post hope to get to it this week.

[Mog]

You need someone to help you lever the rear of the the pump in the relavent direction untill pulleys are alined. When alinement is correct nip it up & recheck with straight edge, repeat if needed. It will also help if you losen the injector pipes.

[millebmac]

ok, thanks, will give it a go sometime this week.