“Clunk” sound in drive train?

[Davinator]

I have a brand new ‘24 model which is having an issue in the drive train that I was hoping to gather some insights on. In any gear, when I let off the gas I am hearing a pretty loud “clunk” sound. Sounds like something is loose. Any ideas?

 

[USMC]

Usually a u-joint, but I have a light clunk which is just the drivetrain noise.

 

[Davinator]

USMC, I wouldn’t classify my noise as a “light clunk” at all…quite noticeable, at just about any speed, in any gear. All I have to do is let off on the gas pedal and it happens. I sure would like to figure out where it is coming from before it gets worse!

 

[txroadkill]

Springs doesn’t need greasing do they? Check them and all u bolts. Leave trans in neutral and check driveshaft slop in rear. Maybe your backlash is bad. And lastly check engine and trans mounts.

 

[OffRoad709]

Suspension bolts tights and greased ?

 

[USMC]

USMC, I wouldn’t classify my noise as a “light clunk” at all…quite noticeable, at just about any speed, in any gear. All I have to do is let off on the gas pedal and it happens. I sure would like to figure out where it is coming from before it gets worse!

I would definitely check the u-joints. It usually happens on take off or on slow down. It will be loud. The U-joints probably dried out. The factory is not known for good assembly procedures on the Roxors. My factory issue was that the transmission adapter leaked gear lube.

 

[Davinator]

Excuse my ignorance, but due the u-joints have zerk fittings to inject grease?

 

[USMC]

Excuse my ignorance, but due the u-joints have zerk fittings to inject grease?

Some do and some don't. I have not looked at mine to see.