- This topic has 5 replies, 4 voices, and was last updated 12 years, 11 months ago by
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Happy New Year All !
I have a noise when I engage the clutch on my JM 284. The noise stops when I release the clutch. It is a whiring noise, not quite a screech, but too loud to ignore. There is no slip in the clutch. Power take off works, but is hard to engage. My unedumucated guess is throwout bearing. Any suggestions as to how to quiet this thing down? Thanks, BG
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Hmmm…If you mean the noise is present when you push in the clutch pedal (disengaging the clutch), and is quiet when you let off the pedal (engaging the clutch), then yes, it sounds like the throwout bearing may be the cause. To the best of my knowledge these are not bearings that can be lubed. That being the case, you need to check it out more thoroughly.
Pull the clutch inspection cover – you'll have to remove at least one loader tower if your tractor is equipped with a loader. The loader tower mounts over the clutch inspection cover.
You'll need a strong flashlight and a small mirror to see anything in there. Check first for proper spacing of the clutch fingers to the face of the release bearing, and look for signs of heat discoloration – bluing, scorching, etc. Any signs of friction heating mean the bearing is seized up or dragging badly and it will need to be replaced. Unfortunately, that means splitting the tractor, but it isn't that bad a job if you're careful.
You cannot leave this inspection for later. If you let a bad clutch release bearing go it will ruin the clutch fingers, possibly (likely) the clutch discs and may end up damaging the pressure plates/flywheel by overheating them. All much worse than just a release bearing.
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Check the oil in the transmission, there are 2- o-rings that seperate the Main clutch shaft and the PTO shaft, if the oil level is low it will make a squealing type of noise when you let out the clutch, You can overfill the transmission a little then drain it back down,if it is a release bearing it would make the noise while the clutch is engaged also
Tommy
Affordable Tractor Sales
“Your Jinma Parts Superstore”
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Thinking back on an older truck I owned that had a manual transmission, Tommy is right. The throwout bearing went out on that one and it squealed when my foot was off the clutch and quieted a bit when I began to depress the clutch pedal – at first. In short order it was squealing all the time and I finally had to replace it. So disregard what I said and try Tommy's suggestion first – he knows more about these tractors than the people who build them.
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Glad we could help !!!!
Tommy
Affordable Tractor Sales
“Your Jinma Parts Superstore”
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To fix that you can put a dipstick in the front box. Drill and tap the cover for a 1/2″ pipe plug. Drill the plug to insert a 3/16″ rod in the plug so it will be down in the oil. With the front box at the correct level mark the rod and then cut off the lower end so you have about 1″ of rod below the high level mark. Mark the rod so you will know the high level mark.
I will go measure where the plug should be in the cover.
This was a fix that was on the old site and is probably no longer to be found.
I have a dipstick in both boxes and it's handy to have.
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