So with my 2017 SVL95-2S I'm having hydraulic drive issues. When moving forward in normal mode, I have to compensate steering occasionally to remain on a straight path. When I switch to fast (rabbit) mode, this gets wildly worse. I'm afraid I have a hidden issue developing. Anyone else experience this? Thanks
SVL95-2S Drive and Hydraulics
- Thread starter Gov
- Start date
GreensvilleJay
Well-known member
Equipment
BX23-S,57 A-C D-14,58 A-C D-14, 57 A-C D-14,tiller,cults,Millcreek 25G spreader,
OK, I don't have your machine or worked on it, but ...........FWIW.........
You've probably got two hydraulic motors being controlled by two spool valves with separate linkages. There's a lot of 'little' things that can cause one side to go faster than the other. You mention 'going forward', so it doesn't happen in reverse ? If true, then it shouldn't be a motor issue, perhaps just an adjustment of 'linkage' on one of the levers/valve. If levers are mechanically connected to valves, tierod ends can be adjusted, if cable connected, well, cables do stretch over time and use, again, should have some adjustments on the ends( like bicycles).
It'd be a good idea to get the WSM........
You've probably got two hydraulic motors being controlled by two spool valves with separate linkages. There's a lot of 'little' things that can cause one side to go faster than the other. You mention 'going forward', so it doesn't happen in reverse ? If true, then it shouldn't be a motor issue, perhaps just an adjustment of 'linkage' on one of the levers/valve. If levers are mechanically connected to valves, tierod ends can be adjusted, if cable connected, well, cables do stretch over time and use, again, should have some adjustments on the ends( like bicycles).
It'd be a good idea to get the WSM........
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
The Only thing you said that means anything!
Everything else was complete run around for the OP!
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
There are several components that can affect drive speed.
The Drive motor
It could be having a mechanical issue with that drive like a bad track roller.
The HST unit
The electronics that control the HST.
I do believe there is an electronic adjustment for speed differential or ballance on the HST output so the motors travel at same speed.
Get the WSM as it will have a troubleshooting info in it!
GreensvilleJay
Well-known member
Equipment
BX23-S,57 A-C D-14,58 A-C D-14, 57 A-C D-14,tiller,cults,Millcreek 25G spreader,
re: Everything else was complete run around for the OP!
please explain how a hydraulic motor, can go faster one way than the other
please explain how a hydraulic motor, can go faster one way than the other
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
I'm pretty sure I did in my message to the OP.
The drive motors are controlled by an HST Unit, that is controlled by a computer.
They are NOT controlled by a spool valve with a mechanical linkage operating a spool valve.
The HST is a mutiple output unit that essentially controls each motor independently and can balance the loads independently.