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Chapter Overview
This chapter provides hydraulic pressure check,
adjustment and troubleshooting procedures.
Personal Safety
Improper or incomplete maintenance/repair of a
Compact Track Loader can be dangerous and may
result in machine damage, injury or death.
Do not attempt to perform any type of repair or mainte-
nance on a Compact Track Loader until you have read
and fully understood the information in this manual.
Refer to the Operation and Maintenance manual for in-
structions regarding proper machine operation tech-
niques before operating any Compact Track Loader.
Prior to performing any type of service work on a
Compact Track Loader, read and understand Chapter
1 (Product Safety) for personal safety information.
14. Hydraulic Pressure
Hydraulic Pressure Check &
Troubleshooting Procedures
Test and troubleshooting procedures are provided for
the following Hydraulic system components.
•
Charge Pressure Check & Adjustment
•
Auxiliary Valve Pressure Check & Adjustment
•
Lift Arm Pressure Check & Troubleshooting
•
Drive Pressure Check & Troubleshooting
When checking hydraulic system pressures, you are
essentially reading the relief valve settings of each cir-
cuit tested. If your hydraulic system and components
are functioning properly, your readings should match
those specified. If they differ, adjustment and or repair
may be required to restore proper function.
The procedures in this section are listed in the
order they are to be performed. When a pressure
issue is suspected, perform these procedures to help
diagnose and or repair the problem.
Charge Pressure Check
Charge pressure is used to prime the various circuits,
including the joysticks, with hydraulic oil for operation.
Low charge pressure could lead to sluggish operation
of any and all functions.
Required Tools
Pressure Gauge 0-1000p.s.i. (0-6895 kPa)
Test Port (A)
14-1
Note: The quick coupler (test port A) located in-line near the
hydraulic filters can be used for general pressure checks and
troubleshooting. Port (A) will typically read higher than port
(B) due to the restrictions placed upon hydraulic oil flow by
the in-line filters.
14-1
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