REPAIR STEPS
SOLUTION
DIAGRAMS
PROBLEM
MI91.2167
16APR98
Part 11
After turning the
master switch
"ON" and push-
ing the Automat-
ic Switch to "RE-
TRACT":
a. The red "RETRACT"
light does not blink.
Check voltage and connections. Check the bulb. If the system works
manually and levels automatically, the problem is the control panel.
b. The pump does
not run when the
master switch is
turned "ON" but
starts to run when
the Automatic Switch
is pushed to "RE-
TRACT".
Replace the control panel.
c. One or more jacks
will not retract or
the red warning lights
do not go out.
Recheck the system in the manual mode. Any problem occuring at
this time can be found by operating the system manually.
d. The control panel
will not shut off.
Replace the control panel.
Part 10 continued
REFER TO MP65.3455
h. Jacks do not ex-
tend to stabilize the
vehicle. The pump
runs under no load.
The adjustable relief valve is not working properly and should be re-
placed.
i. Jacks extend to
stabilize the vehicle,
but lift the vehicle
too high or do not
extend to the ground
fully.
The relief valve needs to be adjusted. Loosen the jam nut. If the ve-
hicle is lifting too high, turn the adjusting bolt counterclockwise. If the
vehicle needs more pressure on the jacks to stabilize, turn the adjust-
ing bolt clockwise.
Turn the adjusting bolt 1/2 turn at a time and retry the system. Repeat
until the proper adjustment is reached. If adjustments do not help, re-
place the relief valve.
REFER TO MP65.3455
j. The pump does
not shut off.
Turn the master switch off. If the pump stops turn the master switch
back on. If the pump starts to run see Part 3d of the Repair Steps. If
the pump does not run the control panel may be the problem. Retry
the automatic leveling function. If it works ok, the problem was a stuck
relay. Check voltage and all connections.
FRONT
RIGHT
REAR
RIGHT
ADJUSTABLE
RELIEF VALVE
RELIEF VALVE
ADJUSTABLE
FRONT
RIGHT
REAR
RIGHT
