Maxon MXT-25, Maintenance Manual

Page: 44 / 61

1
1921 Slauson
A
ve. Santa Fe Springs, CA. 90670 (800) 227-41
16 F
AX (888) 771-7713
44
PLATFORM RAISES BUT LEAKS DOWN
1.
Check if the
“S1”
(lowering)
solenoid valve is constantly
energized. Connect voltmeter
negative
(-)
lead to ground
(-)
connection on pump and posi-
tive
(+)
lead to
(+)
terminal on
the
“S1”
(lowering) solenoid
valve
(FIGS. 44-1 and 44-2)
.
If voltmeter reads battery
voltage, check for faulty
wiring or control switch.
VALVE “S1”
LOWERING
SOLENOID VALVE
SOLENOID
SWITCH
GROUND (-) WIRE
CONNECTION
VOLTMETER (-)
LEAD)
POWER DOWN
MODULE
12 VDC POWER UNIT (POWER DOWN)
FIG. 44-1
“S1” (+) WIRE
CONNECTION
VALVE “S1”
LOWERING
SOLENOID VALVE
SOLENOID
SWITCH
GROUND (-) WIRE
CONNECTION
VOLTMETER (-)
LEAD)
JUNCTION
BLOCK
12 VDC POWER UNIT (GRAVITY DOWN)
FIG. 44-2
“S1” (+) WIRE
CONNECTION