[Vwdiesel] Timing belt and tensioner change
lbaird119 at aol.com
lbaird119 at aol.com
Mon Jan 11 23:24:55 PST 2010
In a message dated 1/11/2010 9:21:20 PM Pacific Standard Time,
cosborn at epix.net writes:
> I also made another mistake and set the tension on the
> belt while the locking pin was still in the fuel pump. I only realized my
> error after looking at the manual after I put everything back together.
> I plan to open it back up to check the tension but I want to know what I
> should do in case my tensioning error made the belt jump a tooth or two.
> How can I conform correct timing if I cant see TDC on the flywheel. Is it
> possible to have a flywheel without any markings?
>
No biggie, You actually have to pull the pump back about a half
a tooth to get the timing right anyway. Even with a pin in, the
tension in the pump, rotates it forward against the pin. Usually
close to a half tooth. IF you were off a tooth it probably wouldn't
start and would likely smoke a lot, two teeth and it sure won't start.
If the cam gear was loose then your tensioning mostly pulled around
that way. Some would rotate the crank a teensy bit but it won't be
enough to cause any cam problems. If you're on the right tooth and
belt tension, your timing should be spot on.
After the T-belt broke on the pickup, put it back on, new head
gasket and all, set belt tension, checked timing, even had 3 of the
bolts loose. Timing was dead on.
A few here have encountered your same "wrong flywheel" issue.
If it's the right flywheel then the "o" mark falls between two protruding
notches/bosses that are about 4 inches apart. Some are cast pretty
lightly and hard to see. If it's indeed wrong you'll have to pull an
injector and probe for TDC and make your own mark.
Loren
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