Clark GEX20 - Access to the Drive Axle; Drive Axle Fluid; Drive Axle Fluid Change; Lift Chains

Group PS, Periodic Service
SM 765, Nov ’06 Planned Maintenance • PS-2-13
hydraulic fluid filter at every fluid change. Replace the
sump tank breather/fill cap every 1000 operating hours.
N
O
TE
Always use genuine Clark Parts.
Sump Tank Breather Maintenance
Remove the sump tank fil cap/breather and inspect for
excessive contamination and damage. Clean and replace
as recommended by the PM schedule, or as required by
operating conditions.
Access to the Drive Axle
Access the Drive axle by removing the floorplate or
through the upright.
WARNING
!
An upright or carriage can move unexpect-
edly. Chain or block the carriage and rails.
Failure to follow this warning can result in
serious injury or death.
Refer to Group SA, Section 2 for additional information
on supporting the upright.
Block the wheels. Be sure to put blocking under the car-
riage and upright rails.
Drive Axle Fluid
Check the drive axle fluid level with the truck on a level
surface and fluid at operating temperature.
Remove the fluid level inspection plug located on the left
side of the drive axle housing. Fluid level should be at the
bottom of the inspection hole. If fluid level is low, add
enough fluid to bring fluid level up to bottom of the
inspection hole. DO NOT overfill.
Add the recommended fluid only, as required.
Inspect the fill plug for damage. Replace as needed. Install
and tighten the plug.
Drive Axle Fluid Change
N
O
TE
Check the PM interval (operating hours), or
the condition of the fluid to determine if the
drive axle fluid needs to be changed.
Drain and replace the drive axle fluid every 2000 operat-
ing hours. The fluid should be drained when it is at operat-
ing temperature. Put the truck in a level position. Block
the wheels to prevent truck from moving.
Inspect and clean the drive axle breather (air vent)
mounted on top of drive axle.. Refer to Lubrication Chart
and Group 40.
Truck Chassis Inspection and Lubrication
Lubrication and inspection of truck chassis components,
including steer wheels and wheel bearings, will be easier
if the rear of the truck is raised and blocked up under the
frame. Refer to Group SA, Section 2, for additional infor-
mation.
IMP
O
RTANTIMP
O
RTANT
Do not raise truck by lifting under the coun-
terweight.
WARNING
!
Be sure to put blocking under the frame to
keep the truck safe.
Be sure to clean the grease fittings before lubricating.
Remove excess grease from all points after lubricating.
Upright and Tilt Cylinder Lubrication
Clean the fittings and lubricate the tilt cylinder rod end
bushings.
Clean the fittings and lubricate the upright trunnion bush-
ings (one fitting on top of trunnion, each side).
Lift Chains
Lubricate the entire length of the rail lift and carriage
chains with Clark Chain and Cable Lube.