Gas Spring; Discharging The Gas Spring; Remove - Yale 524150797 Maintenance Manual

1600 YRM 1504
15. Adjust the prox sensor so the end of the sensor is
no more than 4 mm (0.16 in.) from the support
bracket. Tighten the retaining nuts.
16. Reconnect the control handle wiring harness and
prox sensor.
WARNING
Disconnect the battery by separating the battery
connector before opening the compartment cover
and before inspecting or repairing the electrical
system. DO NOT place tool on top of the battery. If
a tool causes a short circuit, the high-current flow
from the battery can cause personal injury or
property damage.
WARNING
The capacitor in the traction motor controller can
hold an electrical charge after the battery is
disconnected. To prevent electrical shock and
personal injury, discharge the capacitor before
inspecting or repairing any component. Make
certain the battery has been disconnected and
always wear safety
Precautions in this section. DO NOT attempt to
discharge the capacitors
controller.
WARNING
The gas spring used on the control handle is
installed under tension and can release with
enough force to cause personal injury or property
damage.
Review the following procedures before removing the

gas spring.

DISCHARGING THE GAS SPRING

WARNING
Goggles and a face shield must be worn for
personal protection as metal chips and hydraulic
lubricant may be ejected from the drill operation
due to the high internal pressure.
Gas Spring
glasses. See Special
by shorting
17. Install the drive unit compartment cover.
18. Connect the battery and test the operation of the
lift truck prior to returning to service.
CAUTION
The control handle return spring is charged with
pressurized gas and contains a hydraulic oil
lubricant.
NOTE: This process is a destructive operation to the
gas spring. A new gas spring must be used during
reassembly. This is necessary because internal
damage to the spring components which are not
detectable could cause damage or injury when the
spring is removed.
1. Check that the handle return spring is installed
and properly secure the control handle arm in the
full upright position. Remove the plastic plugs to
increase visibility of the gas spring.
WARNING
Contents are under pressure. This process may
the eject metal chips and oil.
2. Locate the gas spring inside the control handle
through the access hole on the front of the control
handle and drill a 3 mm (0.125 in.) hole into the
gas spring cylinder shell to relieve pressure.
3. Clean up any discharged oil and dispose of in
accordance with local regulations.

REMOVE

To remove the gas spring from the control handle:
1. Remove the plastic plugs to access the gas
spring.
CAUTION
DO NOT damage the control handle wiring harness
inside the control handle arm.
2. Discharge the pressure from the gas spring. See
Discharging the Gas Spring.
Gas Spring
9