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Farmall & IHC Tractors Discussion Forum
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H cam gear and mice

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Andy Sommer

11-22-2006 05:57:36




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I finally seperated my block from the bell housing last night around 11:00. Found a bunch of mice nest in and around the bell housingand throw out bearing. Good news is the pressure plate, clutch, and fly wheel look pretty good. ..... My questions are these, do I need a gear puller to remove the cam gear off the front of the block. With everything removed, I cannot turn the crank over. I did bang on number two piston a little and got the gear to move enough to reach one of the bolts behind it, however, someone told me to just just pull the gear, however, I am not sure.... Also, the pistons are froze pretty good. Found that hidden bolt behind the starter to free up the block, that was a tricky one. I always remember my dad saying, if is stuck, there must be a reason it is stuck.

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wegman in Mn

11-22-2006 14:09:25




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 Re: H cam gear and mice in reply to Andy Sommer, 11-22-2006 05:57:36  
I don't know of this helps but if your h has the belt pulley without the pully insert two bolts in the holes put the pulley in gear and use a pry bar in the bolds and turn the engine over but I don't know if it works on stuck engines.



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tn terry t

11-22-2006 06:29:36




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 Re: H cam gear and mice in reply to Andy Sommer, 11-22-2006 05:57:36  
the cam gear is held on by one bolt in the center of the gear i took a bar and slid it behind the gear and put slight pressure on it then took a brass hammer and lightly taped on the gear it walked right off the two bolts behind the gear holds the cam thrust plate and far as turning the engine over stick a screwdriver in the hole where the hand crank drive pin goes mine had a heavy rollpin . i had a super a that i drove in the shed went back 5 days later and the motor was stuck? transmission fluid and a week later it broke loose and is still running today. why it stuck i dont know

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Andy Sommer

11-22-2006 08:05:33




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 Re: H cam gear and mice in reply to tn terry t, 11-22-2006 06:29:36  
I got the nut off and I have applied A Ton OF PRESSURE to the gear with prybars. I tried a rod through the hole in the crank shaft, just bent the rod. Does ATF work better than PB Blaster or Mystery Oil??? I figured the cam gear would slide right off since it looks like just the nut and key hold it on, may try a gear puller tonight... also i assume a soft dead blow hammer would would as well as a brass mallet?!?

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Bob M

11-22-2006 11:59:41




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 Re: H cam gear and mice in reply to Andy Sommer, 11-22-2006 08:05:33  
Andy – Ordinarily the cam gear will slide right off (it’s held only by the nut on the end of the camshaft).

However if the both the crankshaft and camshafts are stuck it will not slide off on account of the mating helical gear teeth (the cam gear must be able to rotate slightly as it slides off over the crankshaft gear). So before you get too aggressive see if there’s any backlash on the cam gear. If not you’ll need to unstuck either the camshaft or crankshaft before you can remove the cam gear.

If you find the camshaft is NOT stuck, a 3 jaw puller might do the trick. Can also try gently heating the cam gear hub while applying pressure with the puller.

Be careful however and don’t apply excessive force with the puller! The cam gear is cast iron (brittle) and the web between the cam gear hub and rim is not very thick.

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Theman

11-22-2006 09:32:43




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 Re: H cam gear and mice in reply to Andy Sommer, 11-22-2006 08:05:33  
The cam gear can be a tough pull given the fit is a close one and yes, a puller is recommended. It is even better if you can fit the 3-way puller arms in the holes by the hub. The gear is cast and can break. Your problem is compounded if the camshaft and crank are both stuck since the helical cut of the gear requires something to turn as the gear slides off. Now, if you're somewhat skilled at modifying bargain bin wrenches, you can remove the two thrust plate bolts behind the gear and remove the camshaft along with the gear. If you aren't using a puller, thread the nut on the shaft so they are flush with one another. This will help protect the fine threads on the shaft as you tap on it.

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