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Hi, I posted previously regarding a lethargic Hydrostatic Drive. I removed the drive, drained the oil and replaced it with new. I also bought a new drive belt and reassembled it all. Stupidly I didn't check the length of the new belt with the old, but assumed that as it was designated as appropriate for my LT155, it would be ok. I reassembled it all and the photographs show the configuration as it is now. With the engine running there is no drive and the belt is relatively slack and the fan at the top of the hydrostatic unit barely rotates. Should the belt rotate with the engine running, regardless of whether forward or reverse is engaged? Is there a means of tensioning the belt other than the self tensioning quadrant with the guide wheels. Any thoughts would be really welcome. Many thanks, Terry

May be thsee instructions will help you out. https://www.instructables.com/How-to-change-the-traction-belt-on-a-John-Deere-LT/

One thing thing I see already is the new belt is ruined.

According JD the OC of the OEM belt is 86-3/8.

No note of serial breaks. BUt I have ran across one mower (don't which JD it was) that use an one inch shorter belt due to pulley changes.

Rivets said:

May be thsee instructions will help you out. https://www.instructables.com/How-to-change-the-traction-belt-on-a-John-Deere-LT/

Click to expand...

Many thanks. Terry

StarTech said:

One thing thing I see already is the new belt is ruined.

According JD the OC of the OEM belt is 86-3/8.

No note of serial breaks. BUt I have ran across one mower (don't which JD it was) that use an one inch shorter belt due to pulley changes.

Click to expand...

The new built shouldn't be ruined? It hasn't had any action other than fitting? Thanks

Then it must be an optical illusion as it the belt covering is burned off.

Thanks.

I am now wondering if there is something I have or have nor done in refitting the transmission into the mower.
With the back wheels free to turn, they rotate freely, regardless of whether the frewheeling lever is in or out. Should that be the case? I am just trying to work through the options to troubleshoot the problem. thanks, Terry

Did you remove the rear wheels? If so you probably missing an axle key.

I am now wondering if there is something I have or have nor done in refitting the transmission into the mower.
With the back wheels free to turn, they rotate freely, regardless of whether the frewheeling lever is in or out. Should that be the case? I am just trying to work through the options to troubleshoot the problem, thanks, Terry

StarTech said:

Did you remove the rear wheels? If so you probably missing an axle key.

Click to expand...

The Keys are defintely located. I took care to make sure they where as I have made that mistake on a scotter magneto many years ago, so learnt that lesson!