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41 jd H crank installation

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dave

02-13-2003 07:34:46




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Hi, this is probally a dumb question but I need to know how to align the crank and cam gear on my 41 jdH I found the mark on the cam, but can not find the one on the crank? any help would be greatly appriciated, thanks,
dave




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Clooney

02-13-2003 14:48:37




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 Re: 41 jd H crank installation in reply to dave, 02-13-2003 07:34:46  
Dave, look closely for that dimple on the crank gear. Sometimes due to rust or discoloration it is hard to find.
~If you just can't find that crank gear mark, a good place to start is install the flywheel [correctly] & turn the flywheel so the "L/H ex open" is in line with the case mark [at 3 o'clock behind flywheel] , then install the cam so the L/H exhaust lobe of the cam is just starting to lift [or move] the L/H exhaust lifter. You want it to just barely start to move the lifter [about .015"]. Then, [if the head is still off] install a long wire [I use a tig welding rod or coat hanger wire] from a dial indicator mounted on the front of the block to the L/H exhaust lifter, then "0" the indicator with the lifter on the cam base circle, then turn the flywheel until you see .015" movement on the indicator, if it is timed correctly the "L/H ex open" on the flywheel should be within 1" of the case mark.
~When the head is back on & the valve train is in & adjusted [use .015" cold on the L/H exhaust], turn the flywheel again until the valve lash just comes out of the L/H exhaust rocker [push rod is just starting to get hard to spin], at that time the "L/H ex open" should still be within 1" of the case mark.

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dave

02-13-2003 23:00:53




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 Re: Re: 41 jd H crank installation in reply to Clooney, 02-13-2003 14:48:37  

thanks clooney, somehow after scrubing the front side real good and wondering where the heck the mark was I turned the crank around and there it was,plain as day! is that correct? i mean themark on the back of the gear?
thanks,Dave



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