Running my 2018 Manindra HST 5550 with a 6' hog. While running the hog when I got into some heavier stuff the hog would almost completely stop turning, I would have to lift the hog and let it take off again then go. I first thought it might be some kind of clutch on the hog but I noticed that the drive shaft was also stopping so that meant the PTO gear box was slowing with the hog. Now, I didn't notice any change in the engine like it was under any kind of load. Running in low range at about 2200 RPM. The hog is almost new and hasn't been in any rough areas with lots of saplings just grass. Any words of advice ??
Mowing PTO and brush hog operation.
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dodge man
Super Star Member
I am guessing something is slipping in the tractor, you should have plenty of power.
Sawyer Rob
Super Member
Just wondering if you are seeing the actual pto shaft, or the cover that covers most of them these days?
SR
SR
mcfarmall
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Well, there's a clutch in the tractor that turns the PTO on and off. Have the dealer hook the tractor up to a PTO dynamometer and see how it performs. If the PTO stops rotating before the advertised PTO horsepower is reached, then the PTO clutch in the tractor is bad.
seville009
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i run my brush hog at the top of the green range - about 2500 rpm - while in low range on my MF 1540 hydro.
It will bog down in the thick stuff, but the engine will bog down too
It will bog down in the thick stuff, but the engine will bog down too
ptsg
Super Member
How do you turn on the PTO? By flicking a switch or pressing a clutch pedal?
According to Tractordata, that tractor was made by TYM and I believe you engage the PTO using a switch.
That means you have a clutch pack inside the transmission for the PTO, instead of a dry clutch inside of the bellhousing.
It can be a couple of problems. Either the spool on the PTO valve is not travelling the full stroke or for some reason the pressure on the clutch pack is not right and it's slipping.
Was it a sudden or gradual issue?
According to Tractordata, that tractor was made by TYM and I believe you engage the PTO using a switch.
That means you have a clutch pack inside the transmission for the PTO, instead of a dry clutch inside of the bellhousing.
It can be a couple of problems. Either the spool on the PTO valve is not travelling the full stroke or for some reason the pressure on the clutch pack is not right and it's slipping.
Was it a sudden or gradual issue?
There is a button on the dash you push that engages the PTO.
I have only had the tractor sense early May, initially is seemed to be ok but I really didn't do any heavy work with the brush hog, now that summer is over I need to knock down areas that didn't get bailed which has some fairly heavy weeds. One thing I didn't check are the fluids, if low could that be causing the issue.
I have only had the tractor sense early May, initially is seemed to be ok but I really didn't do any heavy work with the brush hog, now that summer is over I need to knock down areas that didn't get bailed which has some fairly heavy weeds. One thing I didn't check are the fluids, if low could that be causing the issue.
dodge man
Super Star Member
Could also need a fluid change. There might be a suction screen and/or a regular filter that need changed.
LouNY
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I have no idea how your Mahindra hydraulics are set up.
Many tractors use two pumps they may be sandwiched together and use just one drive,
but some will use a single pump with a priority valve.
Either the priority valve or the small section of the pump will go to the power steering and any hydraulic controls such as the pto or as a charge pump for a hydrostatic.
There should be a location to check the pressure going to the pto clutch pack.
The first things to check would be the solenoid for functioning and the pressure of the fluid going to the pto clutch.
I would do that before any fluid or filter changes as they may be needed after any repairs, be a shame to have to do them twice in a short time.
Many tractors use two pumps they may be sandwiched together and use just one drive,
but some will use a single pump with a priority valve.
Either the priority valve or the small section of the pump will go to the power steering and any hydraulic controls such as the pto or as a charge pump for a hydrostatic.
There should be a location to check the pressure going to the pto clutch pack.
The first things to check would be the solenoid for functioning and the pressure of the fluid going to the pto clutch.
I would do that before any fluid or filter changes as they may be needed after any repairs, be a shame to have to do them twice in a short time.
Great information. I will figure out how to check that pressure and will check the solenoid to make sure it is getting power to energize. I have now checked the fluids and they are fine as I suspected. With only 300 hours on the tractor I wouldn't think the clutch has gone bad but possible. I have had other issues with the HST portion, electrical connectors (can read from previous post) so I am hoping the same for this issue. If there is a priority valve that would mostly likely be inside the casing so hosed to check that.
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