Maxon MXT-25, Maintenance Manual

Page: 56 / 61

1
1921 Slauson
A
ve. Santa Fe Springs, CA. 90670 (800) 227-41
16 F
AX (888) 771-7713
56
PLATFORM BEGINS TO LOWER ON LH SIDE,
BUT WILL NOT LOWER ON RH SIDE - Continued
5.
Disconnect green wire from the
“S1”
(lowering) solenoid valve
(FIG. 56-1)
. Do
resistance checks on the lock valve wir-
ing harness as follows.
• Connect ohmmeter
(+)
and
(-)
leads to the black wire and contact 1
on the wiring harness connector
(FIG. 56-2)
. Reading should be 0.5
ohm or less.
• Connect ohmmeter
(+)
and
(-)
leads
to the white ground wire and con
tact 2 on the wiring harness connect-
or
(FIG. 56-2)
. Reading should be
0.5 ohm or less.
• If any readings are more than
0.5 ohm, check lock valve wiring
harness for crimps or damage. Repair
wiring harness if possible, or replace
the entire lock valve assembly, if nec-
essary.
DISCONNECTING LOCK VALVE WIRING
FROM LOWERING SOLENOID VALVE
(POWER DOWN POWER UNIT SHOWN)
FIG. 56-1
NOTE:
Ensure ground bolt and
ground wiring connections
on the pump are clean and
tight
(FIG. 56-1)
.
MEASURING RESISTANCE ON LOCK
VALVE WIRING HARNESS
FIG. 56-2
1
2
WIRING
HARNESS
CONNECTOR
WHITE WIRE (-)
(GROUND)
RING TERMINAL
TO “S2” VALVE
BLACK WIRE (+)
6.
Before completing this procedure,
ensure lock valve wiring is recon-
nected to
“S1”
(lowering) solenoid
valve, ground bolt, control switch
wire, and lock valve coil.
VALVE “S1”
LOWERING
SOLENOID VALVE
GREEN
WIRE
LOCK VALVE
WIRING HARNESS
(REF)
GREEN
WIRE