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Farmall & IHC Tractors Discussion Forum
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M hydraulic/timing issues

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Reddog176

09-13-2005 08:47:00




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I was having hydraulic issues with my M (it"s a live hydraulic pump off the distributor), so I put a pressure gauge on the hydraulic line and started the tractor and got no pressure.

Then i capped the line just after the gauge, and started the tractor.. it started ran a few seconds.. the gauge went to about 1500psi and the tractor stalled... so i hooked the lines back up properly and now the tractor is very hard to start, and when it DOES run, it sounds like the engine is very loaded down.. it also will shoot embers from the exhaust.. i"ve played with the timing a bit to no avail.

any help would be appreciated, i hope this can be fixed.

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the tractor vet

09-13-2005 19:06:19




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 Re: M hydraulic/timing issues in reply to Reddog176, 09-13-2005 08:47:00  
the hdy. pump key will be the first to go so just pull the pump and dist and remove the gear and replace the key on the pump . Now i could be wrong but it is alot easier to pull the pump first.



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Jeff P

09-13-2005 12:11:34




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 Re: M hydraulic/timing issues in reply to Reddog176, 09-13-2005 08:47:00  
I think you may have sheared the cam gear key,(by dead heading the pump) throwing the cam timing off. Some of the later 400's and 450's with the live hydraulics had a problem with the nut holding the cam gear on would work loose and wear the key way out. I believe they went to a left hand thread on the later camshafts to prevent this nut from working lose. I believe the only way you are going to know is pull the front timing cover off and check that key and key way.

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Reddog176

09-13-2005 13:11:56




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 Re: M hydraulic/timing issues in reply to Jeff P, 09-13-2005 12:11:34  
Ok, well at least I know where to start now..

How hard of a job is it to get that cover off? Do i need to pull the front wheel assy? Or can I just remove the radiator and get in there?

Thanks



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Jeff P

09-13-2005 13:44:10




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 Re: M hydraulic/timing issues in reply to Reddog176, 09-13-2005 13:11:56  
I 'm sure you have to pull the front end. I don't think there is enough room for the crank pulley to come off the crank, unless your hand crank assembly has been removed.



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