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Flail mower bogging down

pccpaystub

Member
Joined
Jun 9, 2024
Messages
5
Location
Sonoma ca
Hi all
I have a 2005 tl130.I purchased a flail mower that requires 18 gpm and the machine delivers 20.Ran awesome for 2 years and this year hooked up and started mowing Instantly started bogging down if i move the arm up and down while the flail mower is enaged it bogs.Im waiting on a buddy to bring over a machine to test gpm.Anyone ever run into this issue?
Thank you and have a good day
 

Tones

Senior Member
Joined
Mar 15, 2009
Messages
3,179
Location
Ubique
Occupation
Ex land clearing contractor, part-time retired
Seems like the priority valve isn't working correctly.
 

Tones

Senior Member
Joined
Mar 15, 2009
Messages
3,179
Location
Ubique
Occupation
Ex land clearing contractor, part-time retired
Without knowing what breed it is it's probably repairable. 0rings or some such. But test first so you're not guessing.
 

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
13,225
Location
Canada
How fast were lifting the boom? That would affect the flow to the mower but should be limited if you have a priority valve.
 

pccpaystub

Member
Joined
Jun 9, 2024
Messages
5
Location
Sonoma ca
Just lifted it afew inches off ground togo over a bump.The mower bogged down a good amount and I had to come to a complete stop for it to spin
 

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
13,225
Location
Canada
Is something like bailer twine wrapped around the cutter shaft? That could put extra load on the hyd's. Without a priority valve it's normal for the aux. to slow down when using an implement with a motor. If something is creating more load on the cutter shaft would make it slow to recover to normal operating speed. Flail mowers are great until you get wire, twine, cable or even hose wrapped around the cutter shaft. It can be a real pain yo remove. Also check the bearings are good and properly greased. Have known some people that didn't realize you have to grease things regularly. Not implying that is you. I'm just reminded of a guy I know who never greased his new skid steer. Seized the pins on the boom cylinders. Bucket pins and bushings were shot way before that. Just has long pins in with nothing retaining them. This is in under 1000 hours and he ran a successful auto repair business for years. I still shake my head. He has a grease gun and knows how to use it.
 

pccpaystub

Member
Joined
Jun 9, 2024
Messages
5
Location
Sonoma ca
Everything gets greased regularly (before and after using usually) no bailing wire or twine.some grass gets built up around the mower but even with that cleared it bogs down


Also I'm gonna hook it up to a trencher later this week so that will tell me if it's the machine or the attachment.
 
Last edited:

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
13,225
Location
Canada
Check there isn't long grass or anything wrapped around the extreme ends of the cutter shaft. Is it hard to disconnect the hyd. motor from the mower? You should be able to turn the cutter shaft easily by hand on its own. If something is binding would be hard to tell with everything hooked up. I've had long grass wrapped tightly around the ends and had to take a screwdriver to dig it out and a knife to cut it.
 

pccpaystub

Member
Joined
Jun 9, 2024
Messages
5
Location
Sonoma ca
Spins free as a whistle.I might be able to get another machine but it's a high flow unit so I don't wanna start blowing lines
 

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
13,225
Location
Canada
You may have a pump issue. High flow shouldn't blow lines unless the pressure is too high. You need to check the flow and pressure requirements of the mower and see shat the machine puts out. On some machines you might be able to adjust the pressure and or flow. You could lower the throttle a little to reduce flow if required. Flow would control the speed of the mower but pressure is what gives it the power/torque. Reducing flow wouldn't affect the pressure very much so the mower wouldn't suffer from a lower RPM of the skid steer engine.
 
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