Troubleshooting And Repair Procedures Shall Be Completed By A Person Trained And Qualified On The Repair Of This Machine; Immediately Tag And Remove From Service A Damaged Or Malfunctioning Machine; Repair Any Machine Damage Or Malfunction Before Operating The Machine; Before Troubleshooting - Genie GTH-636 Service Manual

June 2007
Observe and Obey:
Troubleshooting and repair procedures shall be
completed by a person trained and qualified on
the repair of this machine.
Immediately tag and remove from service a
damaged or malfunctioning machine.
Repair any machine damage or malfunction
before operating the machine.
Unless otherwise specified, perform each
repair procedure with the machine in the
following configuration:
· Machine parked on a firm, level surface
· Boom in the stowed position
· Key switch in the off position with the key
removed
· Wheels chocked
Part No. 97487 GTH-636 • GTH-644 • GTH-842 • GTH-844 • GTH-1048 • GTH-1056
Troubleshooting

Before Troubleshooting:

Read, understand and obey the safety rules
and operating instructions in the appropriate
operator's manual on your machine.
Be sure that all necessary tools and test
equipment are available and ready for use.
Be aware of the following hazards and follow
generally accepted safe workshop practices.
Crushing hazard. When testing
or replacing any hydraulic
component, always support
the structure and secure it
from movement.
Electrocution hazard. Contact
with electrically charged circuits
could result in death or serious
injury. Remove all rings, watches
and other jewelry.
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.

General Repair Process

Malfunction Identify
discovered
symptoms
problem
still exists
Return to Inspect
service

and test

problem
solved
Section 5 • Troubleshooting
Troubleshoot
Perform
repair
5 - 1