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First Reduction Gear Housing NOISE

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41JDb

03-21-2006 20:06:51

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Im restoring a 41 B and i changed the trans and motor oil along with several other things on the way to getting it started. Got it started and drove it around a while and it had a few noises. Thought I better check all my fluid levels as maybe some would get worked around the case or it burned some so when i took off the trans fluid fill pipe plug about 3 quarts ran out. I thought that was a little odd. I ran the tractor around a little more and now it has a nasty noise it the first reduction housing. Maybe I filled it up on a hill, i dont think so though, can anyone explain? Why after draining the excess do i have this noise?Also I was told there was a seperate way to put oil in the first reduction housing. If so where do you put it in at and how much? Thanks AL

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buckeye al

03-22-2006 14:27:52

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Re: First Reduction Gear Housing NOISE in reply to 41JDb, 03-21-2006 20:06:51

Might it be easier to pull the operating fork out the front of the reduction gear housing instead of disassembling the clutch and removing the pulley just to pour in some oil?

On the other hand.....

Seems to me the engine's oil pump would fill the primary reduction gear housing up to the appropriate level (the return hole to the crank case) with oil that pours out of the right side of the right main bearing. If the engine is allowed to run a while without moving the tractor and with the clutch disengaged (pulley not rolling), wouldn't the primary reduction gear housing fill to the return hole level and be just fine lube wise without hurting gears, bearings or forks?

As for the noise, I agree either the primary reduction gear shaft's outboard bearing is bad or the shape of the teeth on the primary reduction gear and the pulley drive gear are worn to the point they're just noisy. The housing only amplifies their noise. Sometimes if it is gear tooth wear, the noise will disappear (or greatly diminish) if you're going down a hill and the engine is holding you back. If the noise returns when the engine begins to push the tractor up the next hill it's very possible the noise is gear tooth wear. Since it's lubed with engine oil you can't hide it with extra hevy weight gear lube either.

I could be all wet but that's my pair o pennies on it.

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Maark

03-22-2006 07:17:27

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Re: First Reduction Gear Housing NOISE in reply to 41JDb, 03-21-2006 20:06:51

by going south means the bearing has gone bad

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Will P

03-22-2006 15:19:28

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Re: First Reduction Gear Housing NOISE in reply to Maark, 03-22-2006 07:17:27

Thanks, he didn't get it.

Will P

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41JDb

03-22-2006 07:15:58

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Re: First Reduction Gear Housing NOISE in reply to 41JDb, 03-21-2006 20:06:51

Thanks for the info Kurt. I just went through rebuilding my crank splines and putting on a new driver and the last thing I want to do is pull that da** driver off again. How about if I full the clutch fork housing off and lide a funnel over the crank area and down to the first reduction housing? Al
Also any other ideas are appreciated!

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Will P

03-22-2006 15:25:24

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Re: First Reduction Gear Housing NOISE in reply to 41JDb, 03-22-2006 07:15:58

You already had the case off??? Should have put a drain and fill in the case. The driver is EASY to pull off. 2 screws and two square nuts and it just pops off. I have never had a problem.

I stoped posting on this board because people can't read. I just posted to you thinking things could change. NOPE.

Thanks to Kurt. But I get pissed on.

*uck this board.

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Will P

03-21-2006 20:48:57

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Re: First Reduction Gear Housing NOISE in reply to 41JDb, 03-21-2006 20:06:51

The reduction gear case is lubed by the motor and not the trans. There is no way to drain or fill the reduction gear case in your year B. I put a drain and fill plug in my case on my 43B when I had mine off. Check the bearing behind the cap on the reduction gear case. Most go south.

Will P

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41JDb

03-22-2006 05:46:50

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Re: First Reduction Gear Housing NOISE in reply to Will P, 03-21-2006 20:48:57

Ok, I was told that it was lubed by the trans. I have a 41 which is different from the newer styled. What do you mean they go south? My reduction gears looked good when I had my clutch of last week. Can anybody tell me how to get some oil in there? Thanks Al

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Will P

03-22-2006 15:17:49

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Re: First Reduction Gear Housing NOISE in reply to 41JDb, 03-22-2006 05:46:50

1. No the engine oil is shared with the reduction gear case. 2. My 43B is not "new" styled. It is just like yours. 3. I said BEARING, NOT gears. 4. The engine supplies the oil. Biggest thing is getting the junk out of the bottom of the reduction gear case.

Will P

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41Jdb

03-22-2006 20:33:52

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Ok in reply to Will P, 03-22-2006 15:17:49

I understand that a 43 is not a new styled that comment was for someone else. Calm down a little, as I asked by south I am not dumb I just meant by going south what is the best way to cure the problem. I also understand the engine supplies oil but someone else posted saying to add oil to it so that added a little confusion. Everyone is just trying to help so please dont get offended if i didnt catch you the first time. Thanks for all the help.

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Kurt_JDB

03-22-2006 06:13:12

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Re: First Reduction Gear Housing NOISE in reply to 41JDb, 03-22-2006 05:46:50

Al,

Pull your clutch/pully unit off, and pour a pint of motor oil into the reduction gear housing. You will need to use a funnel with a long spout to get over the "dam" between the housing and the clutch/cranckshaft area.

There is a bearing at the end of the drive gear which mounts in the cover of the reduction gear cover. This can go bad. Other bearings that may cause a problem include the drive gear bearing in the case. This is what went bad in my "51 B. It caused the 1st reduction gear to come loose from the tapered shaft of the drive gear. The noise I heard was the reduction gear rattleing around.

Kurt

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