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84
PLATFORM LOWERS SLOWLY
1. Try lowering platform (activate
DOWN toggle switch). Make
sure motor solenoid (located in
the pump box) (FIG. 84-1) is
energized and “E” solenoid valve
is not energized while lowering
platform. Connect voltmeter to
terminal-1 and terminal-2 on “E”
solenoid valve shown in FIG.
84-1. The correct indication
on voltmeter is 0 volts dc when
“E” valve is not energized. If the
voltmeter indicates +11 to +12.6
volts dc, check control switch and
wiring to that valve (refer
to ELECTRICAL SYSTEM
DIAGRAMS section). Replace
faulty wiring or control switch as
required.
TROUBLESHOOTING - POWER DOWN
Make sure Liftgate platform is open and resting on the ground before perform-
ing the following step.
WARNING
!
To prevent damage when installing valve cartridges & coils, torque valve
cartridge nut to 30 lbs.-in. max.
CAUTION
2. The “E” solenoid valve (FIG. 84-1) may
be stuck in the “open” position. Remove the
“E” solenoid valve (FIG. 81-1). Next, check
the valve cartridge as follows. Push on
the plunger in the valve by inserting small
screwdriver in the open end (FIG. 81-2). If
the plunger does not move with a smooth,
spring-loaded action (approximately 1/8”)
(FIG. 81-2), replace the valve cartridge.
“E” VALVE
(3-WAY)
VALVES & ELECTRICAL CONNECTIONS
FOR POWER DOWN PUMP
FIG. 84-1
TYPICAL
TERMINAL-1
TYPICAL
TERMINAL-2
NOTE: For dual pump system, check secondary pump and motor fi rst.
NOTE: Numbers for the electrical terminals shown in the illustration are
not stamped on valve coil. Numbers shown are for reference only.
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