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« on: 17 July 2017, 18:22:07 »
i think ALL the online videos show the adjustment procedure for the timing belt with 2 hex rollers. they use the upper roller to tweak bank 1 cams and use the lower roller to tweak bank 2 cams. i cannot find a procedure that adjusts 1 roller only.
i think saturn used the 3.0 motor in the L300 sedan prior to 2002? perhaps it had a single hex setup?
do you have a link to the 1 hex adjustment procedure?
the way it is explained to me is all motors have tolerances. some have stock heads, some may have milled heads, some blocks are 54 deg +.1 deg and some are 54 deg -.1 deg. you install the timing belt and the cam sprocket teeth line up fine. you are not off 1 tooth which would be noticeable.
than you use the hex adjuster to fine tune the cam alignment marks. and turning the hex will move BOTH cam banks?
so why did they go to a double hex design?
the roller with the 1/2 moon graduated mark is for adjusting tension, not for aligning the cam marks.