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1992 245 Timing Belt One Tooth Lag on Cam Gear 200

posted by  machine man on  Thu Mar 23 13:15 CST 2023
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last visit: Wed Oct 22 15:40 CST 2014
[RELATED]

Hi,

The belt wasn’t off that much but what you were seeing was stretching of the belt.
An amount accumulates if you don’t adjust the belt tensioner periodically in 30,000 miles.

The tune of the engine is gradually lost and therefore one doesn’t notice it as much right away.

You have to line up the crankshaft to a casting rib directly up behind the bottom sprocket.
It a little hard to see but then again so is the distributors line on the right of the plastic belt cover.
I use a mirror to take away any parallax vision issues to see on the proper tooth too.
The cam notch is nicely up on top so it is really easier to see the accumulation.

A new belt has lines as a reference to “help” get the upper two sprocket dots with poorer spacing but is not totally necessary if you use a mirror to look backwards off the faces of the sprockets.
A few hundred miles after installing a new belt is also recommended.

Phil






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