When the TDi came out, there was a series of different mod kits to prevent this kind of failure. However, they eventually found that the fault was finally cured by reducing the tensioner torque setting.Quote:
Originally Posted by haydofly
M
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When the TDi came out, there was a series of different mod kits to prevent this kind of failure. However, they eventually found that the fault was finally cured by reducing the tensioner torque setting.Quote:
Originally Posted by haydofly
M
and came out as a TSB, and so isn't in the manual.Quote:
Originally Posted by camel_landy
In other words, the tension as set out in the manual is too high.....
If you have RAVE, you can find the TSB.
The best instructions I've ever seen, including the correct tensions are here
DIFFLOCK - 300tdi Timing Belt Change
yep,, tension is covered in the post
http://www.aulro.com/afvb/common-thr...ming-belt.html
in-- wait for it--
Common Threads,,
who'd a thunk it?
Taz's brotherinlaw here. Thanks for all the replies guys. Maybe it was belt tension. I had it set to 14Nm, the lower value for a new belt according to the manual. At the time, I thought 11NM was for a old belt. Will try 11Nm next go.
Valves looked ok, but I got the inlet valves replaced anyway and the head serviced while I was at it. I won't bother next time. $560 to service the head with 4 valves at M&D.
The 4 inlet pushrods were bent and will be replaced.
Didn't hear any noises coming from the timing belt during running - but I was moving along at 100 clicks.
Rick130's pic of the crankshaft sprocket looked the same as mine.
When I fit the new belt, I'm going to try running it for a short time without the timing cover and watch the belt tracking. I need the piece of mind. I'll have to fit the crachshaft pulley on to do so.
Thanks again.
I'll have to agree with loarangie on Zeus gears , they have too many failures with zeus gears which is blamed on a DIY installation ,but they themselves recommend DIY. if something as critical as a Timing Belt why suggest that in 1st place?
I'm a bit far from Bedfordshire, although i did live in Milton Keynes for a spell - why i dont know :(.Quote:
Originally Posted by Ivan
A great pity with the Zeus gears, I have driven a few and they do go well, and almost zero smoke etc. but the conseqences of a failure are catastrophic. I don't recommend them.Quote:
Originally Posted by Disco_owner
It was A great idea and the kit is engineered well though. I've fitted them too and can't help thinking that DIY isn't a good idea if someone with limited aptitude and knowledge gets let loose with a socket set and toolbox....:o
JC
Yep
Had the same problem. Have had my 97 300TDI since new, and let L/R dealer do the first timing belt change etc. Turned out they fitted the new kit, with the revised tensioner and idler pulley, but not the crank pulley. (Spot welded type) (Unknown to me, was told new kit fitted all okay.) Time went past and snapp....suffered similar loss, bent pushrods, and two rockers. I think I ordered a replacement kit from British4wd which included a one solid piece crank cog/pulley.
the spot welded flange crank pulley is the genuine LR kit.Quote:
Originally Posted by JohnM
The solid design is a Bearmach (aftermarket) one. ;)
For what it is worth, the first time I replaced the belt (Sept.'97 build) I drilled/tapped for 3/8" bsp plug between the 2 top studs, front timing cover adjacent to the pump wheel rim.
Periodically remove the plug, can clearly see how the belt is tracking or if delaminating/deteriorating.
Gives at least some peace of mind.
Mine was built with all latest mods. including bushed pump mounting brackets etc.
llandro