Maxon RA-35, Руководство по обслуживанию

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34
TROUBLESHOOTING
PLATFORM WILL NOT LOWER, LOWERS TOO SLOWLY, OR TOO QUICKLY
1.
Connect voltmeter (+) lead to
motor solenoid terminal
“B”
and
the (-) lead to the ground wires
connection on pump
(FIG. 34-1)
.
Verify that full battery voltage
is at
“B”
. Recharge the battery
if voltmeter indicates less than
12.6 volts dc.
2.
Check for structural damage or
poor lubrication. Replace worn
parts.
TERMINAL “B”
BATTERY (+)
TERMINAL “D”
COIL DRIVE
TERMINAL “C”
GROUND (-)
POWER UNIT
FIG. 34-1
TERMINAL “A”
LOAD
VALVE “C”
LOWERING
SOLENOID VALVE
STARTER
SOLENOID
3.
Check if the
“D”
terminal and
“A”
(lowering) solenoid valve
are getting battery voltage
(FIG.
34-1)
. Connect voltmeter nega-
tive (-) lead to ground (-) wires
connection on pump and posi-
tive (+) lead to the
“D”
terminal
(FIG. 34-1)
. Hold control switch
in the
“LOWER”
position. Then,
connect voltmeter (+) lead to
(+) terminal on the
“A”
(lower-
ing) solenoid valve
(FIG. 34-1)
.
If voltmeter shows a much lower
reading than +12.6 volts dc or a
reading of 0 volts, check for faulty
control switch and wiring, battery
cable, ground wire connections
in pump assembly, and pump
motor.