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Cam Change without resetting tensioner on AU 

 

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 Post subject: Cam Change without resetting tensioner on AU
Posted: Sun Jun 24, 2007 2:54 pm 
Getting Side Ways
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I installed my WR-6250 AU XR6 HP cam today and I was not able to use the broom and brick method suggested in the techincal document on the subject. I did manage to do it with a crow bar across the engine bay and tie wire to hold up the gear, worked a treat.

 

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Posted: Sun Jun 24, 2007 2:55 pm 
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seriously resetting the tensioner isnt that hard, move ps pump, and its right there...

 

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Posted: Sun Jun 24, 2007 3:02 pm 
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I would have saved a good half hour by not doing it.

 

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Posted: Sun Jun 24, 2007 3:03 pm 
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I did neither? When i did my head i just sat the gear on top of whatever was there, let the chain go slack, everything. Popped back on easy as. Mines never had real good oil pressure, and the mtor hadnt been started for about three days before i pulled down the head, so maybe that makes a difference?

 

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Posted: Sun Jun 24, 2007 4:45 pm 
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The tensioner acts in a ratchet manner - it will extend out and not go back in in several increments. If its allowed out too far and you do up the cam, you put too much tension against the plastic guides and they get chewed up in no time. If your chain is already stretched big time and the tensioner is on its last click, this might not be too much of a drama for the guides, but you get the other stretched chain issues related to timing.

 

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