REPAIR STEPS
SOLUTION
DIAGRAMS
PROBLEM
MI91.2154
11MAY98
Part 9 continued
e. The red lights do
not come on.
Recheck Part 4h of the Repair Steps.
f. The automatic
leveling light will not
stay on.
Recheck the voltage to the panel. Check all grounds and connections.
Low voltage, bad grounds, or loose, corroded connections can cause
problems.
Part 10
After pushing the
Automatic Leveling
switch to leveling
the second time:
a. The leveling light
will not blink or blinks
but nothing happens.
A problem can occur at any time. For systems with kick-down jacks,
turn the panel off, then recheck Part 9 of the Trouble Shooting Steps.
If Part 9 checks ok, the control panel should be repaired.
For systems with straight-acting jacks, refer to Part 9a, b and c of the
Repair Steps. Replace "go vertical" with "extend".
REFER TO MP65.3455
c. The leveling light
comes on and blinks
for approximately
30 seconds. The
pump does not run.
The jacks do not go
vertical.
Recheck Part 4 of the Trouble Shooting Steps. If the system works
properly in the manual mode. The problem is probably the fuse board
(breaker board). Replace the fuse board. If that does not fix the prob-
lem, replace the control panel. Remember the manifold mounting and
pump mounting, supply grounds for the system and should be check-
ed for clean, tight connections to the vehicle frame.
REFER TO MP85.3460
d. The jacks go to
the vertical position
but the pump will not
shut off.
Unplug the pressure switch. Turn the system on and push the auto-
matic leveling switch to LEVELING. As the jacks go vertical, short
the two pins in the harness plug for the pressure switch together.
If the pump does not shut off, check the pressure switch wires in
the harness. If the pressure switch wires are ok, replace the control
panel.
If the pump shuts off,
REFER TO MP85.3462
LOW
VOLTS
VERTICAL
RIGHT FRONT
MANUAL OPERATION
HORIZONTAL
BLOCK FRAME SECURELY BEFORE CHANGING TIRES OR
WORKING UNDER VEHICLE. MANUAL USE LIMITED TO 4 MIN. WITHOUT COOL DOWN
TO PREVENT DAMAGE FROM OVERHEATING, DO NOT HOLD SWITCH
ON FOR MORE THAN TWO OUT OF EVERY FOUR MINUTES.
EMERGENCY
MASTER
CAUTION!
LEFT REAR
LEVELING
RETRACT
AUTOMATIC
AUTOMATIC
ON
OFF
LEFT FRONT
RETRACT
HOLD
EXTEND
RETRACT
EXTEND
HOLD
5 AMP
RIGHT REAR
RETRACT
HOLD
EXTEND
CONTROL PANEL
A
B
#14 MASTER RELAY
RED
CONTROL HARNESS
2
MASTER
RELAY
RED
(+12 CONTROL)
PUMP
HARNESS
RED
CONNECTION A
CONNECTION B
RED
RED
FUSE
PANEL
BA
B
A
NO
NC
WHITE
BLACK
SHIELDED
CABLE
RIGHT
REAR
PUMP
BREATHER
CAP
(OIL FILL)
PRESSURE
LINE
RETURN
LINE
SHUTTLE
VALVE
check the return line to the pump while push-
ing the H/V switch to VERTICAL. If there is fluid flowing from the return
line, replace the shuttle valve. If no fluid flows from the return line, re-
move the pressure line from the pump and attach a 5000 psi gauge to
the pump fitting. Push the H/V switch to VERTICAL. If the pump pres-
sure is above 3000 psi, replace the pressure switch. If pump pressure
is below 3000 psi, check the voltage and ground for the pump. If that
is ok, have the pump rebuilt.
