Issued July 2024
Maintenance and Adjustment
Copyright 2024, The Heil Co.
Printed in the U.S.A.
Maintenance and Adjustment
88
PRESSURE ADJUSTMENTS
A. Unit Preparation
Follow these unit preparation steps prior to making any pressure adjustments listed in this section.
1. MAKE SURE area around unit is clear to enable arm and fork operation.
2. MAKE SURE the unit is on flat, stable ground and apply the parking brake and chock the wheels.
3. Notify anyone in area that the arms and forks will be operated during this procedure.
4. Make sure unit is full of hydraulic oil.
5. Make sure Hydraulic oil is at least 100 degrees F before beginning any pressure checks or adjustments.
a. If unit oil is not at desired temperature, engage the hydraulic pump.
b. Activate and hold the tailgate lock function for two minutes.
c. After two minutes release tailgate lock function and cycle the packer/ejector circuit to mix the hot oil.
d. Repeat steps (b) and (c) until oil is at desired temperature.
6. Connect a 5000 psi hydraulic gauge to the quick-disconnect located on the lift arm control valve.
7. Start the engine and engage the hydraulic pump.
WARNING
Moving equipment can be dangerous to bystanders. Serious injury or death can occur if a person is in the wrong area or is
not attentive to the operations. Clear the area of all unnecessary people before you operate the controls.
WARNING
The hydraulic fluid may be under pressure and may spray while you open the connection. Hydraulic fluid may cause damage
to your eyes, hands or skin. Wear protective eye glasses, gloves and other clothing as necessary to protect you from the
hydraulic fluid.
This procedure requires two properly trained technicians, one to operate the controls from within the cab while the other will
be working on the pressures settings from the street side of the unit.
The unit must remain in neutral during all pressure setting procedures.
B.Required Tools
These are the tools required to make pressure adjustments.
Personal protective
equipment
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