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Belt pulley case removal

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Randy-IA

12-27-2005 12:21:29




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Hi , I know it look's simple . Is it ? Or does the gas tank need to be lifted up some to help clear the fuel strainer ? This is an M tractor . The problem is it won't shift into gear . It turn's easy so either the poppet is stuck or the gear may be rusted to the shaft or ??? . The control arm seem's to move freely at least a little bit . This is with the tractor running or not . So I'm going to lift it off and take a look if I don't have to remove the gas tank that is . It's wet out and no place undercover to work on it so it's got to be a quick look . Thanks ...Randy

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Hugh MacKay

12-28-2005 04:13:15




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 Re: Belt pulley case removal in reply to Randy-IA, 12-27-2005 12:21:29  
Randy: I'm in a bit of a hurry here this morning, but have read much of this thread. How long have you had this tractor? Do you know if it sat parked for a period of time in past? When these tractors are parked and never started for long periods, they tend to get a bit of rust up top in gear cases. I would try changing the gear oil, then administer some use. You will be amazed at what use will do.

I ran into this with the 140 I have, parked for 10 years in a heated warehouse. When I got it, gear shifting was stiff and it was impossible to engage pto. New gear oil and use has heeled all. Certainly beats wrenches and lifting. You don't need to see the inside unless you have noise or leaks. Just one of the good policies I've found with old tractors.

Have a little story for you. I once bought a farm next door. The neighbor subdivided out and kept his late parents 25 year old house. He and family moved in and he proceeded to dig up by hand all water lines, sewer lines and drains, just for inspection, they were all working. I rented the old farm house to a retired guy that was very quick wited and a good sence of humor. One evening while milking my dad and I could see the shoveling in yet another trench. My tenant walked down to barn where dad and I were. Dad asked him, "What in the name of time is Harry doing now?" The tennants responce, " I think he's going to declare war, he has his trenches all dug." This principle can apply to old tractors as well.

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Randy-IA

12-29-2005 09:48:16




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 Re: Belt pulley case removal in reply to Hugh MacKay, 12-28-2005 04:13:15  
Hi Hugh , As far as I know ( and from the looks of the motor oil I drained ) it sat for a considerable amount of time . I removed grass , crud and heavy sludge from the crankcase pan . I had to scrape the built up grease and crud from the gearcase when I changed and flushed that oil . I guess I didn't flush the belt case very good though because when I was done and drove it for about 15 miles on the roads around here I checked the level in the drivetrain case and it was gray again but still full . All this leads me to think that the water came out of the belt case . I put about 1/2 gallon of 90wt through it as I refilled the drivetrain case . I can't afford to change the gear oil again anytime soon so it stays as is . Any way the problem now is that the beltdrive won't shift into gear and the drivetrain growls under load , quiet as a mouse in a coasting situation so it probably needs bearings/bushings replaced and I can see the rust pits on the gear faces through the check plug and upper fill holes . I've tried shifting the beltdrive many different ways . It just feel's like the gear doesn't want to move at all . The control arm is free feeling . As for the trany oil , now that it is cold using it will have to wait for warmer weather since I don't have anything to use it for now . I'm going to use it to pull the IH 990 moco this spring , I think that might give it a workout , cutting 30% alfalfa and the rest grass . It won't be a long workout because it's only 6 acres . In fact I got it to take over all the haying duties so I'm going to have to find something for the 1755 oly to do while it's waiting to pull the disk and plow . Oops Sorry for the long post again , Take care ...Randy

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john d

12-27-2005 19:36:24




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 Re: Belt pulley case removal in reply to Randy-IA, 12-27-2005 12:21:29  
You can do it without messing with the fuel tank or sediment bowl. I don't think I'd want to do it in the rain. It's heavier than it looks; watch your fingers...



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Randy-IA

12-27-2005 20:35:07




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 Re: Belt pulley case removal in reply to john d, 12-27-2005 19:36:24  
Hi , I suspected it'd be heavy . Thanks ! I think I'll wait till I can get some help to do it . Thanks ! ...Randy



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RustyFarmall

12-27-2005 14:08:53




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 Re: Belt pulley case removal in reply to Randy-IA, 12-27-2005 12:21:29  
Randy, no such thing as a quick look on the belt pulley housing, even if you get it up you will need a new gasket to put it all back together. Best wait for a nicer day. Have you tried engaging the gearbox while the engine is running, and easing up on the clutch pedal until you feel movement in the handle? The pulley gearbox is just like the gears in the transmission, sometimes you have to grind them just a bit to get them fully engaged. Once you understand how to do that, it can be accomplished without grinding.

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Randy-IA

12-27-2005 20:55:57




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 Re: Belt pulley case removal in reply to RustyFarmall, 12-27-2005 14:08:53  
Hi , Yep , I decided to wait . Bought a gasket this morning before I posted the question . I tried how the owner's manual suggest's and a few way's of my own short of hitting it with a hammer . It doesn't give me the impression that the gear's free on the shaft inside . I'm sure there's some water in it because when it was below zero last week I couldn't turn it by hand . It turn's easy by hand when it's above freezing like today . That's the other reason I want to take it off , so I can take it up to work and put it in the parts washer . I have already drained and sort of flushed the transmission and gear case and put the thirteen gallons of oil back in with about a half gallon of that going in the belt pulley hole . Thanks ! ...Randy

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captaink

12-27-2005 12:39:43




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 Re: Belt pulley case removal in reply to Randy-IA, 12-27-2005 12:21:29  
Before I’d go to all that work, I’d pull up the gear shift lever and check to make sure that all three shift rails are lined up. There are plugs on either side of the shift tower that need to come out then the pin that holds the lever in will come out and the lever can be removed. When you look down the tower you will see the shift rails. All three of them should be aligned. If not, use the shift lever or a large screw driver to align them (there are divider plates between the shift rails that will help you know where they should be aligned. After you have them aligned see if this corrects your problem. If it does, put it back together and go!

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Randy-IA

12-27-2005 21:06:48




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 Re: Belt pulley case removal in reply to captaink, 12-27-2005 12:39:43  
Hi Captaink , When the transmission sticks in gear ( not if but when ) This advice will come in handy . But for now I'm refering to the belt pulley gearcase under the tank . Or is that what you are talking about also ? I'm not having any issues with the transmission other than a excessive amount of noise most likely from a bad bearing or bushing . But that's another question waiting to happen ;-) Thanks for the response ! Take care ...Randy

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MN Scott

12-27-2005 18:40:48




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 Re: Belt pulley case removal in reply to captaink, 12-27-2005 12:39:43  
I think Randy is talking about the pulley drive gear box not the transmission cover.



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captaink

12-28-2005 06:57:53




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 Re: Belt pulley case removal in reply to MN Scott, 12-27-2005 18:40:48  
Oops, I guess I didn't read that one quite close enough. :<( Oh, well, can't win them all I guess...



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captaink

12-27-2005 12:41:20




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 Re: Belt pulley case removal in reply to captaink, 12-27-2005 12:39:43  
I should have added that you should check the end of the shift lever to see how tight it is in the rails. Chances are that it is worn, if so it can be built up with a welder.



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kfox

12-27-2005 21:07:37




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 Re: Belt pulley case removal in reply to captaink, 12-27-2005 12:41:20  
If the transmission had a lot of water in it, when you changed the oil, and the belt pulley hadn't been in gear for a long time you probably have some rusted bearings in the pulley gearbox. Had the same problem with my old H. I think the transmission gears sling the water up into the pulley gearbox, and some of it can't drain back. ken



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Randy-IA

12-27-2005 21:28:33




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 Re: Belt pulley case removal in reply to kfox, 12-27-2005 21:07:37  
Hi , I bet you are right although the thing turns easily by hand so I'm thinking it's the sliding drive gear that's rusted to the shaft or the poppet's rusted in the down position preventing the control shaft from moving the gear . Either way I agree with you , it's rusted . Thanks ! ...Randy



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