Cam belt snapped on Peugeot partner please help!

[JayRenton]

Thanks for that mate, I’ve checked woodfuff key it actually dropped out it looks in perfect condition same with groove in the pulley and the cam pulley looks fine too.
There must be something badly wrong somewhere.

[JayRenton]

Sorted it, just had another brain wave, yesterday I removed the belt and rotated the cam forward 180 degrees put belt back on and still the same. I’ve just done the same thing but rotated the cam 180 degrees backwards instead, fitted the belt and it turns freely so I’ve rotated crank 360 and both cam and crank line up with the holes.

Could make a good sticky thread this one lol.

Fingers crossed there’s no other damage and it fires up!

[JayRenton]

False alarm

It’s not turning Over again, Catching in the same spot what is going on! I’m done I’ve run out Of time it’s going in the garage I’ll let you know the outcome.

Thanks for your help guys.

[moizeau]

You may have a slightly bent valve, Did you send any compressed air down each cylinder when the cam was removed, That will tell you if each of the valves are seated correctly.For it to have not rotated, then rotated and now not in the same timing position means that something very strange is going on the wrong side of the head. Do the tops of the valve stems sit at equal height in the non-rotating condition?

[JayRenton]

I haven’t got a compressor so couldn’t try compressed air, the valve stems were all level thats what I can’t understand. I’ve got someone coming to take a look at it Monday afternoon hopefully he will make some sense of it.

Cheers James

[Gibbo2286]

Any skilled mechanic should be able to tell you quickly if it's just a timing problem.

[sparksie]

Ok, I stand corrected.
I must have a trawl and see can I find where I was reading about the pulleys with the wrong timing holes.
Pretty sure it was on here, but it could possibly be in Car Mechanics, or Practical Classics, both of which I'm a looooong time subscriber to.
I suppose it may be on a different engine, but I think not.
Is it ringing any bells with anyone?

[ekjdm14]

Ok, I stand corrected.
I must have a trawl and see can I find where I was reading about the pulleys with the wrong timing holes.
Pretty sure it was on here, but it could possibly be in Car Mechanics, or Practical Classics, both of which I'm a looooong time subscriber to.
I suppose it may be on a different engine, but I think not.
Is it ringing any bells with anyone?

Probably was in CM, I vaguely recall something about this (or perhaps it was the woodruff keys breaking and letting the pulley slip to the wrong position?)

By the way, I was actually left lost for words the other day when my copy arrived. May Ted Connolly rest in peace, he'd been part of the mag just slightly longer than I've been on this earth & it'll never be the same for his passing!

[RichardW]

The problem pulley is fitted to XU series petrol engines - it's a dual mass type, and the timing hole is in the outer ring - and it's quite possible for the outer ring to slip relative to the inner ring, making timing the engine interesting!!

The DV series diesels have a slot/hole in the cambelt drive sprocket behind the aux belt pulley. This is solid, so it can't slip.

[sparksie]

Probably was in CM, I vaguely recall something about this (or perhaps it was the woodruff keys breaking and letting the pulley slip to the wrong position?)

By the way, I was actually left lost for words the other day when my copy arrived. May Ted Connolly rest in peace, he'd been part of the mag just slightly longer than I've been on this earth & it'll never be the same for his passing!

Oh no!
Mine has yet to arrive.
That's terrible news.
I always turn to the back page first. He usually has something to say that gets me howling.
I'm shocked and saddened.
RIP TC

[ekjdm14]

Good old Ted though, he battled to the very end and even from his hospital bed in his last few days he managed to get his piece sent in (it's a good'en too) & an extra bit in the 60th anniversary section summarising his life & how he became involved with the mag. Quite a fitting final edition & one I'll do my best to not lose amongst the other piles of mags.

[JEREMYH]

Well maybe I should visit this place more as I have CM every month and was a bit shocked to hear about Ted

This thread is also very instreasting to follow and I hope the OP gets it running

[sidney84]

Hi, the moderator mentioned a thread running here about the snapped cambelt. I've suffered the same fate a couple of weeks ago on my Citroen C3 1.4 Hdi 8Valve. I came across a thread that advised that on these 8Valve engines because the valves are vertical they don't bend but deliver the 'shock' to the rest of the valve train. In particular the cam lobes 'give' because rather than being machined from a single piece the lobes are pressed on to the shaft.

When I took the camshaft carrier off I put a steel rule over the valve stems and they were all level (or at least very very close to level) so I was hopeful I hadn't bent any valves. There wasn't any further damage to the rockers etc as far as I could see. (My cambelt snapped close to idle). I took a chance - put a new belt on and it ran like a bag of spanners. I ordered a new camshaft and a comparison revealed two of the lobes were slightly out and they had indeed twisted. I put the new cam on and after a few issues with the the fuel pressure sensor whose wiring I must have disturbed / damaged it runs fine. 250 miles so far and I'm slowly gaining enough confidence to go on longer journeys!!! I was always hopeful because even though I didn't do a compression test I could feel the compression from each cylinder as I turned the crank by hand as advised when fitting a new belt.

It sounds like your break caused more damage because it was at higher speed. Is it possible, if its the same type of camshaft manufacture, you twisted the lobes around so badly that now you've got the timing correct on the crankshaft pulley / camshaft pulley it's actually the camshaft lobes that are out causing the interference? Just a thought.

[JayRenton]

Spot on there mate, just had a mechanic come and take a look, he was a bit baffled at first like me after checking I’d timed it up correctly.
He called his mate who specialises in Diesel engines who said it’s the cam without a doubt and seen it many times before.
I’m going to order a new cam now hopefully that will be the end of it.

Cheers James

[JayRenton]

Is it just a matter of taking the old cam out and fitting the new one in? And run it in for a while?

Still can’t believe the cam lobes have twisted but should still be a cheap repair if it works.