M50D-R1 Help

[Rembrandt]

So I just replaced the slave cylinder in the truck and before I did there was a grinding noise when I would let off the gas in 5th and just coast on it. It slowly got worse. Now its been a week with the new slave and the grinding has gotten worse. It grinds in any gear over 25 mph. And when I push in the clutch it grinds which is new. Everything works fine, shifting, clutch, etc. But I can't figure out what that noise is. Any help?

 

[Explorin94]

Have you ever changed the fluid in the transmission? If you have done it I would dump it again and let us know what it looks like. Especially towards the end when its done draining.

 

[Rembrandt]

I drained it and changed the fluid when I had the tranny out a week ago to change the slave. It was a little dark but not that bad, no chunks or shavings at all

 

[Earl43P]

Could be a bad rear axle.

Put the rear axle up on solid jackstands and have someone "drive" it while you (SAFELY) listen for the noises from the side. Often, you have to shut off the engine while the rear wheels are still spinning and the transmission is in gear with the clutch depressed. That'll cut down some of the noise, making it easier to locate the problem.


If you had said the noise is greatly reduced in 4th gear, and much louder in all the rest, I'd think your transmission was bad.

Did you happen to inspect or replace or re-grease the pilot bearing? A bad pilot bearing will make a lot of bad noise.

 

[Rembrandt]

Rear axle better not be bad, I just put an Explorer 8.8 in it bout 8-9 months ago and fully rebuilt everything inside and out before I installed it

Pilot bearing I never messed with, might have to check it out. I'm almost thinking clutch or flywheel

 

[Rembrandt]

No one?

 

[trail B2]

The M50D wears out a lot at the input shaft the bearing goes bad.I also ruins the input shaft when it goes.They sell a kit for this on E-Bay it happens so much.Like Earl says though it would get quiter in 4th gear it takes side load off the bearing.

 

[MrE_Powers]

The M50D wears out a lot at the input shaft the bearing goes bad.I also ruins the input shaft when it goes.They sell a kit for this on E-Bay it happens so much.Like Earl says though it would get quiter in 4th gear it takes side load off the bearing.

boy i learned that last year.