Rap in jinma 284 creeper gear housing

   / Rap in jinma 284 creeper gear housing #1  

Ewal

New member
Joined
Jun 20, 2006
Messages
14
Location
Central Maine
Tractor
Iron Horse Tractor [JM 284]
Have a 14 year old IHT(Jinma) 284 that has developed a loud rap in gear housing. Does it when at higher rpm痴 but not lower.
Any info on where to look closer would be helpful.
 
   / Rap in jinma 284 creeper gear housing #2  
Does it get better or worse if you step on the clutch?
Does it seem to vary depending on what gear or range you are in?
Can you tell if it is actually coming from the creeper box, Hi-Low box or the clutch housing? A mechanic's stethoscope or at least a large screwdriver held to the ear might help isolate the location.
 
   / Rap in jinma 284 creeper gear housing
  • Thread Starter
#3  
The rap was constant and definitely in the clutch housing creeper area. It stopped when I pushed in on the clutch. I lowered the rpms and moved the tractor about a hundred feet and the rap started again and stopped when I pushed the clutch. I have used the tractor several times since and it has not made a noise.
The clutch needs adjustment I know. The clutch housing seems to show no sign of any thing striking it internally. I do not know the inner workings of the clutch enough to pick up on a problem area.
 
   / Rap in jinma 284 creeper gear housing #4  
My first guess would be that the clutch throw-out bearing is touching up against the clutch fingers.
You can confirm this by running the engine up until you hear the noise, then slowly step on the clutch peddle. If I am right, the noise will go away before just before you get to the point where you can feel the clutch disengage. You can practice this maneuver whit the engine off so you can learn to "feel" the way the clutch acts. My 284 makes this noise sometimes and I don't consider it to be anything wrong.
I haven't posted enough to be able to include a link to my web page where you can see a file about 284
 
   / Rap in jinma 284 creeper gear housing #5  
my website is harnerfarm dot net
if you go there you will see a link to Jinma 284
on that page you will see a 284 documentation link that will download a PDF file. Clutch info is on page 29
 

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