Page 3-13
Maintenance
3.10 - Setting Hydraulic Pressures
X Series Work Platform
S
TEERING
R
ELIEF
V
ALVE
1. Operate the work platform for 10-15 minutes to bring the hydraulic oil up to normal operating
temperature.
2. Install gauge in gauge port.
3. Loosen the locknut or remove the cover on the Steering Relief Valve, and turn the adjusting
screw counterclockwise two full turns.
4. While one person holds the Steering Switch to steer to the right or left, slowly turn the Steer-
ing Relief Valve adjusting screw clockwise to increase the pressure until the gauge reads
1000 psi ( 69 bar).
5. Tighten locknut or replace Steering Relief Valve cover and torque to 6 Ft/Lbs (8 Nm).
6. Remove gauge and replace cap.
L
IFT
R
ELIEF
V
ALVE
1. Operate the hydraulic system 10-15 minutes to warm the oil.
2. Loosen locknut or remove cover on the Lift Relief Valve and turn the adjusting screw coun-
terclockwise two full turns.
3. Place the maximum rated load (see Specifications Table, Section 2) on the platform.
4. Turn and hold the Chassis Key Switch to CHASSIS. Push the Chassis Lift Switch to UP
position and hold it there.
5. Slowly turn the Lift Relief Valve adjusting screw clockwise to increase the pressure until the
platform just begins to rise.
6. Release the Chassis Lift Switch. Tighten locknut or replace Lift Relief Valve cover and
torque to 6 Ft/Lbs (8 Nm).
C
OUNTERBALANCE
V
ALVES
1. Operate the work platform for 10-15 minutes to bring the hydraulic oil up to normal operating
temperature.
2. Remove gauge port cap and install the pressure gauge assembly.
3. Lift the work platform and support the chassis with jackstands so that the wheels are off the
ground.
4. Loosen the locknuts on Counterbalance Valves.
5. With the Chassis Key Switch on DECK and the Drive/Lift Switch in DRIVE, depress the
Interlock Lever and slowly pull the Control Lever to REVERSE to drive the wheels.
6. Adjust the Forward Counterbalance Valve by turning the adjustment screw until the pres-
sure gauge indicates 325 psi (22.4 bar).
7. Slowly push the Control Lever to forward to drive the wheels.
8. Adjust the Reverse Counterbalance Valve by turning the adjustment screw until the pres-
sure gauge indicates 325 psi (22.4 bar).
9. Check the settings by slowly moving the Control Lever FORWARD, then REVERSE, check-
ing the gauge to ensure pressures are properly set. Readjust as needed.
10. Tighten locknuts on valves to 6 Ft/Lbs (8 Nm). Remove blocks and lower the work platform
to the ground.
060571-005
Содержание X Series
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Страница 135: ...Page 6 59 Illustrated Parts Breakdown 6 1 Hose Kit X20N X Series Work Platform 060571 005 ...
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