Engine sounds like there’s pebbles in it

   #1  

MPitrucha

New member
Joined
Jun 4, 2021
Messages
1
Tractor
1993 Massey Ferguson 1020
I have a 1993 Massey Ferguson 1020 gear driven 4wd tractor with 1600 hours on it. Yesterday while going to park it a sudden noise just started randomly. It sounds like pebbles bouncing around inside of the engine. It does it while idling, driving around, really any time the engine is running no matter what else is going on. The sound seems to be coming from either inside the bell housing or inside the crank case. Definitely somewhere around the middle to rear of the engine on the bottom or middle of the block. I’ve checked for anything external that could be making the noise but everything seems intact. Any help is greatly appreciated, thanks in advance.
 
   #2  

Midniteoyl

Elite Member
Joined
May 20, 2013
Messages
4,310
Location
N. W. Indiana
Tractor
Kioti CK3510SE HST, Ford 3400, Gizmow ZTR, Simplicity 7016H
Part of your clutch maybe?
 
   #3  

fatjay

Veteran Member
Joined
Feb 12, 2015
Messages
1,008
Location
Eastern PA
Tractor
Not enough
Worn or spun crank bearing can sound like that. I'd drain the oil and drop the pan and see what you can find. Not sure how easy it is for your machine, but for the ones I own a visual inspection would be the easiest.
 
   #4  

YanmarFever

Elite Member
Joined
Mar 10, 2002
Messages
2,837
Location
Eating a melon..
Tractor
Mahindra 5010C- Branson 4520r- 5520C- Yanmar FX235-D - Bad Boy rogue mower
Open up the inspection plate on your bellhousing and shine a light in there.
Look for any rivets that fell of the clutch disc and are spinning or bouncing around.
Be sure the brake is set or wheels are blocked if you do it while its running.
I had a yanmar with the rivet problem once.
 
   #5  

bmaverick

Veteran Member
Joined
Sep 17, 2013
Messages
2,288
Location
Beloit-WI
Tractor
Yanmar YM2610, retired JD 850, retired DYT-4000
If not the bell housing, then drop the engine pan, look up at the crankshaft bearings. If any are bad, carefully do a bottom end engine rebuild. I would not run the machine at this time.
 
 
Top