Ls mt125 mid mower

[Sumnerjr81]

I have a 2017 ls mt 125 with loader back hoe and belly mower. All implements work great except...the belly mower. It will spool up and mow a few passes then strat to slow down and eventually stop spinning. If it sits for a while and cools down it will start again but again only a few passes or until it hits heavy grass. I replaced the solenoid and that didn't fix it. Fluid is good. Changed the hydraulic filter. Pto cluch acts as it should....im out of ideas. Anyone else have this problem?

 

[GS650GL]

Does the drive shaft between the mid pto and mower gearbox stop turning when the mower stops turning? If so, the pto clutch is slipping and will need to be replaced. It doesn't sound like the mower deck belt is slipping from what you described.

 

[JTKub]

Does the transaxle housing feel extremely hot when this happens?

 

[alexpops]

How HOT is "hot"? Are the spindles seizing or will the blades free spin? belt/clutch squeal? bearing or other noises? weird vibrations? blade bolts tight/torqued? When working properly on first few passes, is it cutting a full swath or just the center section? (no belt driving outers)

 

[Sumnerjr81]

it just slows down untill it stops spinning. the drive shaft does get warm but not so much that it cant be taken off. if i unhook the mower deck and run the pto it runs fine never slows down or shuts off. the blades spin freely and the mower gear box has oil everything there works as it should. affter replacing the solenoid i thought it could be the clutch but on checking the pto shaft it seems to function as it should but i could be wrong on that too. when it does cut it cuts all three blades as nice as can be.

the trans axle is warm maybe a little warmer than it should be. i also made sure the pto fan was working and it was but then again it is connected to the drive shaft. i feel like i am missing something simple. i checked safety switches. changed fuses just incase it was possibly not getting the best of current through it. thought there may be a relay but i havent tracked one down in the system yet.