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Super A, 140 Transmission Gear Grinding Question

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Bill in NC

09-11-2004 11:20:21

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Am looking for a tractor and recently looked at a reconditioned Super A and a late 60's 140. While test driving both tractors, there were times when sitting still and I ground gears big time moving from neutral into gear while idling (and holding-in the clutch!). I drove all sorts of As, Super As, 100s, 130s and my Dad's 140 thirty years ago, and while I ground my share of gears, I am perplexed at how bad the gear grinding was on these two tractors. There were shifts that moved into gear smoothly and other shifts where the grinding was flat out terrible.

A week ago someone posted about using heavier viscosity oil in gearboxes as a means of slowing the spinning gears. It that what's happening with these tractors or have they always been gear grinders and its my 30 - 40 year old memory that's got bad synchronizers?

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Hugh MacKay

09-11-2004 16:36:07

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Re: Super A, 140 Transmission Gear Grinding Questi in reply to Bill in NC, 09-11-2004 11:20:21

Bill: I don't think it is your whatever year old memory. Using hy tran or other light hydraulic transmission oil makes them bad. They were designed for gear oil 90W or heavier. Another thing I find this grinding happens with my tractors if I don't use them a lot. My thoughts are some rust on or in the pilot bushing. Could also be clutch disc sticking on shaft a bit.

I have a snow blade for my 130, and that tractor gets used very little all summer. Come first snow it is quite bad on grinding. After a couple of good snow storms and that shuttle work, it will straighten out. My 140 and SA which I use mainly in summer are similar in spring. Plain and simple, when these tractors were farming they got used more. Only good suggestion I can come up with is grow 5 acres of vegetables, will keep you and the tractor fit and in shape.

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Bill in NC

09-11-2004 17:35:12

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Re: Super A, 140 Transmission Gear Grinding Questi in reply to Hugh MacKay, 09-11-2004 16:36:07

Hugh,
I think you are on the money with the grinding after sitting for a long time. The 140 had not been run in a couple of months. It was grind city trying to get it into gear.

I ran both tractors from standstill in 4th gear as a poor man's quick take on engine compression. The Super A got right on up in 4th gear without any trouble. The 140 bucked, snorted, nearly stalled and then got up to speed in 4th gear. Is this quick driving test more or less a valid way to assess engine condition or is this just a cockamammie suggestion someone once gave me? Any thoughts?

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CNKS

09-11-2004 18:19:47

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Re: Super A, 140 Transmission Gear Grinding Questi in reply to Bill in NC, 09-11-2004 17:35:12

I don't think the test proved anything, except that the Super A was in better tune. The 140 may have a carb problem.

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Bill in NC

09-11-2004 17:48:13

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Re: Super A, 140 Transmission Gear Grinding Questi in reply to Bill in NC, 09-11-2004 17:35:12

The guy selling the Super A has an interesting collection of tractors. He has two fully restored Gibson tractors. He cranked one the Gibson tractors up and I asked him where the steering wheel was. He pulled a lever back and forth the and the wheels turned!!! I'd never seen anything like that before. He said it was a plowing tractor and that the Gibson pulling a single 12" turning plow plowed along faster than his Ford tractor pulling two 16" plows.

He had a 230, 300, Super M, H, and a bunch more tractors. The 230 was a sharp looking tractor. The Super A he is selling has a two bottom turning plow that has a single piece rod that couples up to the front hydraulic lift and the pulling mount merely "clips" onto the drawbar without bolts or anything other than just two two inch long metal bracket pieces fitting snugly over the drawbar. The plow had shock springs up next to the drawbar mount. The plow was lifted up by a chain that goes to the rear hydraulic arms. Anyone have any experience or thoughts about the plow? Was this the standard turning plow for Super As?

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Jim Becker

09-11-2004 19:20:28

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Re: Super A, 140 Transmission Gear Grinding Questi in reply to Bill in NC, 09-11-2004 17:48:13

Sounds like the regular 2 bottom Super A plow. The single bottom plow was more common. The 2 bottom was probably too much plow for all but the most favorable plowing.

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lee

09-11-2004 11:40:56

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Re: Super A, 140 Transmission Gear Grinding Questi in reply to Bill in NC, 09-11-2004 11:20:21

I would say there are several things. The clutch must be depressed all the way each time. You will likely have to wait 3 seconds or so for the trans drive and gears to spin down and stop. There is quite a bit of inertia there. The clutch may not be adjusted correctly or there may be something wrong with the clutch.

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Bill in NC

09-11-2004 15:30:36

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Re: Super A, 140 Transmission Gear Grinding Questi in reply to lee, 09-11-2004 11:40:56

I'm with you on your thoughts. The clutches were engaging near the bottom and probably would do better with some adjustment. However, I waited better than 3 seconds and still had to jamb the stick into gear to make things happen.

Both tractors were missing the shifter knob. What's a good price for a standard black hard rubber shift knob?

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riverbend

09-11-2004 19:53:23

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Re: Super A, 140 Transmission Gear Grinding Questi in reply to Bill in NC, 09-11-2004 15:30:36

I think that local HI dealer had the knobs for about $5.

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lee

09-11-2004 16:41:46

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Re: Super A, 140 Transmission Gear Grinding Questi in reply to Bill in NC, 09-11-2004 15:30:36

Don't know about the knob. Sounds like the clutch
needs a look see. If the clutch is not releasing all the way, (poor adjustment, debris fouled clutch/pressure plate, warped or damaged clutch/pressure plate, release fingers out of adjustment, broken or bent release finger, damaged pilot bearing in flywheel, etc.. If not releasing completely it will tend to grind more severe as you select taller gears.

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