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??????about an H??????????

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Lonnie

10-21-2002 11:50:00




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I just got the H running to day. 1st question is how much oil pressure, I now have anoil pressure guage from a car on the tractor just to see what it is doing until i canget the sheetmetal ready to go , it currently reads about 22psi at normal speed & about 8-10 psi at slow idle, is this toomuch or not enough.2nd is should any noise at all be heard from the govenor. It has all new bearings & backlash is .006". any answers would be appreciated.

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HMan

10-22-2002 13:23:19




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 Re: ??????about an H?????????? in reply to Lonnie, 10-21-2002 11:50:00  
Lonnie, I don't know where you are measuring the backlash,but .006 sounds like not nearly enough. Take my advice, when setting up gov. gears error on the loose side. If your gears are "tight" and you have a whine, don't run it until you add shim and lossen it up. Even the best H will have a little govenor noise. But it better not be a high pitch whine with tight gears. Those gears ain't cheap! HMan

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dan_41jdh

10-21-2002 16:16:42




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 Re: ??????about an H?????????? in reply to Lonnie, 10-21-2002 11:50:00  
Lonnie, oil pressure specifications for the "H" are 10-15 PSI at operating temperature. This is understood to be at operating speed (fast idle). 22 PSI is a little too much because it is hard on the oil pump drive system, and may cause some consumption problems, as well as promote possible oil leakage in marginally sealed areas. Although high pressure won't hurt the rest of the engine, it really won't help it either. If you are quite certain that your gauge is accurate, you should probably adjust your pressure to be less. And, it's pretty easy to do. Regarding noise from the governor area, the fan gears can be very whiney and noisy if they aren't set up properly. Otherwise, that area is supposed to be virtually silent compared to the other noises coming from the engine, including those of the valve train, oil pump drive, the fan, etc. From experience, I can tell you that it is important to leave the setup of used gears exactly as they were, even if they were wrong from the beginning. Otherwise, you will get noise from those gears that will be embarrassingly loud.

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Clooney

10-21-2002 16:10:28




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 Re: ??????about an H?????????? in reply to Lonnie, 10-21-2002 11:50:00  
Lonnie, your oil pressure is a little on the high side [should be 10-15 psi hot & at fast idle]. Before changing the pressure take the tractor out & work it for a while to get it real hot then re check the pressure.
~Be careful using a car type gauge to judge the oil pressure as they are meant for higher pressure ranges & don't usually read very accurately at lower pressure ranges that are out of their calibration range.
~On the governor: the "H" when new had a fairly quiet governor but some noise from a governor/fan gears is not unusual for a well worn "H". If you changed the gear backlash or heel line up it will probably make a fair amount of noise until the gears re-establish a new wear pattern..

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Sorry about that....

10-21-2002 16:24:37




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 Re: Re: ??????about an H?????????? in reply to Clooney, 10-21-2002 16:10:28  
Clooney, sorry to barge in above you. Didn't realize you were posting about the same time as I was. Your answers always are better.



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Clooney

10-21-2002 16:42:28




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 Re: Re: Re: ??????about an H?????????? in reply to Sorry about that...., 10-21-2002 16:24:37  
Dan, it kind of looks like we were headed down the same track anyway.



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Tractorboy

10-21-2002 13:50:40




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 Re: ??????about an H?????????? in reply to Lonnie, 10-21-2002 11:50:00  
Lonnie I think you are right in the ballpark. As long as oil is not being forced thru the mains and seals you should not have a prob.



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