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Timeing mark,s on m cam and crank gears

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chuck

09-16-2002 19:21:28

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HOW DO YOU SET THE GEARS IN TIME I DONT HAVE ANY MARK,S ON THEM ? I BROKE THE KEY WAY IN MY CAMSHAFT AND EAT UP THE GEAR SO I BOUGH A NEW ONE AND TRYING TO FIX IT . CAN YOU HELP ?

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Bob M

09-17-2002 05:24:07

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Re: timeing mark,s on m cam and crank gears in reply to chuck, 09-16-2002 19:21:28

On the Super M the marks are a small prick punch mark between two teeth, and double mark that looks that looks sorta a pair of parenthesis exactly 180 degrees opposite. I gotta think the marks are the same on a regular M.

On the crank gear the mark can be a punch mark on a gear tooth, or a bevelled tooth. With crank to #1 TDC, the tooth with the timing mark will be in mesh with the cam gear.

Punch below for a photo of a Super M cam gear. Note where the marks are in relation to the keyway. Note also marks aren't real obvious - you may have to lightly sand the machined surface to make them visible.

Super M cam gear timing marks

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chuck

09-17-2002 14:19:15

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Re: Re: timeing mark,s on m cam and crank gears in reply to Bob M, 09-17-2002 05:24:07

I SEE THE MARK,S THANK,S. SO THE SINGLE MARK IS THE TIMEING MARK FOR THE CRANK ?
IS THE BOUBBEL MARK FOR THE PUNP GEAR ?
MY KEY WAY BROKE ALSO I,AM GOING TO PUT
LOCKTIGHT ON THE NUT . ANY BETTER SUGUSTIONS ?

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Bob M

09-18-2002 04:37:19

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Re: Re: Re: timeing mark,s on m cam and crank gears in reply to chuck, 09-17-2002 14:19:15

Yeah - the single mark is for crank gear, and the double mark is for the distributor drive gear.

Locktite on the camshaft nut is a good idea - I used it on mine. There should also be a sheetmetal "keeper" between the camshaft nut and the cam gear. After you get the nut torqued down, bend the keeper up in a couple spots so it engages the nut flats and prevents the nut from unscrewing.

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