Steer Functions - Genie GTH-636 Service Manual

Section 5 • Troubleshooting
TROUBLESHOOTING
1-5

Steer Functions

How to Troubleshoot the Steering
Check the Steer Orbitral
1 Tag, disconnect and plug the hoses at orbitral
ports T, R and L. Do not cap the fittings.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
2 Install the hose from port P into port L and
torque to specification. Refer to Section 2,
Specifications.
3 Start the engine. Do not move the steering
wheel.
Result: There is no flow from the open ports of
the orbitral. The steer orbitral is functioning
correctly.
Result: There is fluid flow from one or more of
the ports of the orbitral. The steer orbitral is
faulty and must be repaired or replaced.
4 Turn the machine off. Install the hoses onto the
correct orbitral fitting and torque to
specification. Refer to Section 2, Specifications.
5 - 14 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
Check the Steer Selector Valve
5 Start the engine.
Result: The wheels at one or both ends of the
machine 'drift' after releasing the steering
wheel.
6 Adjust the wheels so that all wheels are parallel
with the length of the chassis.
7 Turn off the engine.
8 Working inside the operator's compartment,
remove the fasteners securing the joystick
inspection cover to the side console.
9 Remove the fasteners securing the steer
selector to the side console.
10 Tag and disconnect the hoses from the steer
selector valve. Cap the fittings on the valve.
Bodily injury hazard. Spraying
hydraulic oil can penetrate and
burn skin. Loosen hydraulic
connections very slowly to allow
the oil pressure to dissipate
gradually. Do not allow oil to
squirt or spray.
11 Connect together the hoses from port
, and torque to specification. Refer to
CYL 1
Section 2, Specifications.
12 Connect together the hoses from port
, and torque to specification. Refer to
CYL 2
Section 2, Specifications.
13 Start the engine.
June 2007
REV A
and
EXH
and
PSI
Part No. 97487