MP45.035
29JAN01
MAINTENANCE
with rebuilt parts or can be sent to HWH CORPORATION to
be rebuilt, when the system is out of warranty.
UNUSUAL CONDITIONS
Do not move the vehicle while the leveling jacks are still in
contact with the ground. Retract the jacks according to the
OIL LEVEL
ELECTRICAL SYSTEM
All electrical connections, especially ground connections,
OPERATIONAL CHECK
Review the operator manual and run the system in the
automatic and manual mode. Note any abnormal
Check that the vehicle is level when all the yellow LEVEL
indicator lights are out.
on a 36 foot vehicle.
If the red LOW BATTERY indicator light comes on, the
Review the JACK RETRACTION section.
Check the air system by using the manual "DUMP" button.
electrical system should be checked. Low voltage can
your dealer or HWH CORPORATION for assistance.
The batteries should be in good condition and fully charged.
Weak batteries can cause erratic operation. Battery cable
terminals and battery posts and connections should be kept
It is important that the room and four leveling jacks are fully
retracted before checking the hydraulic oil level. To check
the oil supply remove the breather cap from the top of the
NOTE: All major components of the system can be replaced
NOTE:
If driving conditions are unusually muddy, the jacks may
become caked or clogged with mud. This condition may
hamper the proper operation of the leveling system. This
In wet or icy weather leveling jacks may become encrusted
with ice. This may cause the leveling system to function
improperly. To eliminate this problem, periodically check the
leveling jacks and break loose any ice which may be causing
improper operation.
Check that all lights work according to the INDICATOR
LIGHT section. Correct function of the four red WARNING
lights is essential to the correct operation of the system.
+ or - 1 inch side to side, and + or - 5.4 inches front to rear
The level sensing unit has an accuracy tolerance of
Make sure the jacks will fully retract to the store position.
Jacks should not interfere with any part of the vehicle when
in the store position.
With the jacks extended, check that the jacks can be
problem may be prevented or remedied by cleaning off each
leveling jack if they become excessively muddy.
should be clean, tight, free from corrosion and protected
from weathering.
if the leveling jacks have returned to the STORE/TRAVEL
position.
"JACK RETRACTION" section and then visually check to see
height, contact your dealer or HWH CORPORATION.
retracted using the "T" handles on the solenoid valves.
Refer to the MANUAL JACK RETRACTION section.
If the system will not dump air, or return to the proper travel
hydraulic oil reservoir. The oil level should be approximately
one inch below the top of the reservoir when adequately filled.
clean.
operation.
cause erratic operation or damage to components. Contact
FLUID: HWH Specialty Hydraulic Oil is recommended. In an
brake fluid or hydraulic jack fluid. Use of these can damage
and can cause staining should a leak occur. DO NOT USE
Dexron automatic transmission fluid contains red dye
emergency Dexron automatic transmission fluid can be used.
seals.
NOTE:
