cam belt walks toward engine. any ideas

[GazzaG60]

HI

i have recently done rods, skimmed pistons, new oil and water pump, tensioner and 7a cam.

when i refit the cam belt it all looks ok but the belt walks around 5-8mm towards the engine making the belt hit the casing.

obviously it should not walk. i have checked everything. the only thing i think i have issues with is the new oil pump thats made in korea rather than Germany. its a VAG item too.

can anybody help. is there a spacer behind the crank pully i have lost? it looks like a crank pully allignment type issue to me.

cheers in advance.

[quattro]

ye there should be a thick washer behind the crank pulley, sounds like this is missing!

[GazzaG60]

any ideas what it looks like?

i dont recall taking one off. having said that the car got turned into a shell almost during the jobs.

any ideas on a PN.

cheers

[Jamo]

ye there should be a thick washer behind the crank pulley, sounds like this is missing!

Can't say i've seen this as the crank pulley is shaped to retain the belt with a flared end.

Be interesting to see the part number if you have it?

[GazzaG60]

i dont remember removing it.

the only bit i remember is the oil pump drive.

but the belt is off and the pulley looks like its sat too far in.

[mcandmar]

My ABY motor had a 3mm spacer, cant find any mention of it in the family album but it did have one.

P.S. think i found it, page 105-20 there is an item below 3A in the list, part number 034105193

[GazzaG60]

thansk for this. i have seen it on ETKA and it said WASHER as description. thats what audi have it as also. 21 quid.

ive ordered one. here hoping as im getting pissed with this car now.

[aelred]

Have you check crank end float?

[GazzaG60]

i have not checked crank end float. it all looked good though. i have not had the crank out. how would you suggest testing this?

cheers

[mark_s2]

Dial gauge on end of crank - lever behind / push down on the flywheel. Record the deflection.

[Flat on my back]

.

If you have 3mm of end float you forgot the thrust washers...

Really dont think so, should be about 4 thou i think.

You can only measure it with a dial gauge and the engine out.

[mark_s2]

Sorry - Just realised that you probably have the engine in the car with the clutch fitted.

[aelred]

If the engine is in the car you could check it with some one pressing the clutch in and out whilst you are watching the front pulley and see if it moves, also you could use a lever on the front pulley ond then on the flywheel and see if there is movement, from memory it should be 12 or 15 thou max movement (dont quote me though, i am away on holidays) Please note that a few thou might look a lot more to the naked eye so dont panic.

[quattro]

Can't say i've seen this as the crank pulley is shaped to retain the belt with a flared end.

Be interesting to see the part number if you have it?

I have no part number for it, but i did the same when i changed the crank pulley, the washer was still in the old one, i pulled it apart again and put the washer behind the new one and all is perfect again.

But it seems that other lads know of the washer too, not just me.

[aelred]

I might be wrong but this washer is only fitted to the later engines like the ABY?