L5740 surging forward and reverse

Joelogger

New member

Equipment
Kubota 5740, farmi winch, woods 8’ rear blade, Dettson 7’ blower
Jan 12, 2022
2
0
1
New Brunswick
Recently my l5740 HST had a slight surge when moving forward and reverse. Changed the fluid and filters, while doing this I noticed the rubber hose at the suction side of the hydraulic pump was cracked, replaced this. Now the surging is even worse and when I release the pedal quick it tries to go in the opposite direction. The linkage all connected to the pedal seem free moving. Looking for any advice to hopefully locate the problem before I have to look inside
 

Joelogger

New member

Equipment
Kubota 5740, farmi winch, woods 8’ rear blade, Dettson 7’ blower
Jan 12, 2022
2
0
1
New Brunswick
Thanks D2Cat, yes I have taken the mat out and cleaned the whole floor space ( wasn’t bad anyway), I got under and sprayed all the linkages with spray lubricant. I think it may have to head to the dealer.
 

lugbolt

Well-known member

Equipment
ZG127S-54
Oct 15, 2015
3,444
641
113
Mid, South, USA
make any difference if it's in high HST or low HST range? Have you tried to adjust the hst sensitivity if you have that adjustment in the dash?