Loose connections or leaking hydraulic lines, hoses or O-rings.
Tighten connections or replace damaged lines, hoses or O-rings.
Oil leaking into PTO gearbox.
Replace hydrostatic pump shaft seal.
Worn or damaged triple pump seals.
Check triple pump cavities between valve stack pump and steering pump. Both pump cavities should contain no oil. If oil is found between pump cavities sections, replace pump shaft seals on valve stack pump and steering pump before replacing both pumps.
Machine Will Not Move Forward or Reverse.
Transmission out of gear.
Shift transmission.
Low on oil.
Check for leaks and correct. Fill reservoir.
Air leak in system.
Tighten connections.
Control linkages broken or loose.
Tighten loose linkages or replace as needed.
Lack of charge flow or charge pressure.
See your John Deere dealer.
Plugged filter.
Change filter.
Exceeding maximum operating pressure setting.
Shift to lower gear.
Drive system unable to build up pressure.
See your John Deere dealer.
Relief valve open.
See your John Deere dealer.
Transmission Hard to Shift or Will Not Shift.
Speed range control lever not in neutral.
Move control lever to neutral.
Transmission shift linkage out of adjustment.
Adjust transmission shift linkage.
Damaged, dirty, rusty or pinched shift cable.
Inspect, clean, adjust or replace cable.
Internal transmission problem.
See your John Deere dealer.
Ground Travel Speed Erratic.
Low oil.
Check for leaks and correct. Fill reservoir.
Plugged filter.
Change hydrostatic charge filter.
Exceeding maximum operating pressure setting.
Shift to lower gear or engage four wheel drive.
Speed control lever creeps toward neutral.
See your John Deere dealer.
System unable to keep charge pressure.
See your John Deere dealer.
Machine Will Not Stop When Speed Range Selector is in Neutral Position.
Control cable out of adjustment.
Adjust cable for neutral position.
Lack of Power or Lost Power. Machine Not Responding to Speed Range Selector.