50950106/AP0313
99
Hydraulic System
Problem
Possible Cause
Remedy
Hydrostatic (drive)
system is noisy.
Hydraulic oil viscosity too
heavy.
Allow longer warm-up or
replace oil with proper
viscosity oil.
Air in hydraulic system.
Cycle lift and tilt cylinders to
maximum stroke and
maintain pressure for short
time to clear air from system.
Also check for low oil level in
reservoir, fill as needed.
Drive motor(s) or hydrostatic
pump(s) have internal
damage or leakage.
Contact your dealer.
Right side doesn’t
drive in either
direction. Left side
operates normally.
Relief valves on rear
hydrostatic pump
malfunctioning.
Rear hydrostatic pump arm
control lever loose.
Control rod linkage to rear
hydrostatic pump
disconnected.
Contact your dealer.
Tighten control lever.
Attach control rod linkage.
Right side doesn’t
drive in one
direction.
Relief valve on rear
hydrostatic pump
malfunctioning.
Contact your dealer.
Rear hydrostatic pump
malfunctioning.
Contact your dealer.
Left side doesn’t
drive in either
direction. Right side
operates normally.
Relief valves on front
hydrostatic pump
malfunctioning.
Front hydrostatic pump arm
control lever loose.
Control rod linkage to front
hydrostatic pump
disconnected.
Contact your dealer.
Tighten control lever.
Attach control rod linkage.
Left side doesn’t
drive in one
direction.
Relief valve on front
hydrostatic pump
malfunctioning.
Contact your dealer.
Front hydrostatic pump
malfunctioning.
Contact your dealer.
Summary of Contents for R190
Page 1: ...Skid Steer Loaders Operator s Manual Form No 50950106 AP0313 English R190 R220 R260 ...
Page 4: ......
Page 22: ...18 50950106 AP0313 Notes ...
Page 36: ...32 50950106 AP0313 Information Center Electronic Display cont ...
Page 37: ...50950106 AP0313 33 Information Center Electronic Display cont ...
Page 50: ...46 50950106 AP0313 Notes ...
Page 86: ...82 50950106 AP0313 Engine Diagnostic Chart ...
Page 87: ...50950106 AP0313 83 Engine Diagnostic Chart cont ...
Page 88: ...84 50950106 AP0313 Engine Diagnostic Chart cont ...
Page 89: ...50950106 AP0313 85 Engine Diagnostic Chart cont ...
Page 90: ...86 50950106 AP0313 Engine Diagnostic Chart cont ...
Page 108: ...104 50950106 AP0313 Maintenance Log Date Hours Service Procedure ...
Page 109: ...50950106 AP0313 105 Maintenance Log Date Hours Service Procedure ...
Page 110: ...106 50950106 AP0313 Maintenance Log Date Hours Service Procedure ...
Page 122: ...118 50950106 AP0313 Notes ...