Maxon TE-25 - Troubleshooting; Platform will Not Raise

11921 Slauson Ave. Santa Fe Springs, CA. 90670 (800) 227-4116 FAX (888) 771-7713
32
PLATFORM WILL NOT RAISE
1. Use voltmeter to verify power is being supplied to solenoid terminal “B”
(FIG. 32-1). Recharge the battery if there is less than 12.6 volts.
5. Check for structural damage and
replace worn parts.
6. Check fi lter in the pump reservoir.
Replace fi lter if necessary.
7. Check for dirty pump motor relief
valve. Clean if necessary.
Replace any worn out relief valve
parts.
2. See the CHECKING HYDRAULIC FLUID procedure. If necessary, add hydraulic fl uid.
3. Touch a jumper wire to terminals “B” & “D” (FIG. 32-1). If motor runs, check switch,
switch connections, and white wire. Check and correct wiring connections or replace
the switch.
4. Touch heavy jumper cables to terminals “A” & “B” (FIG. 32-1).
a. If motor runs, replace the motor solenoid.
b. If motor does not run, repair or replace the pump motor.
TROUBLESHOOTING
Keep dirt, water and other contaminants from entering the hydraulic system. Before
opening the hydraulic fl uid reservoir fi ller cap, drain plug and hydraulic lines, clean
up contaminants that can get in the openings. Also, protect the openings from
accidental contamination during maintenance.
CAUTION
NOTE: In most cases, you can avoid having to manually bleed hydraulic system by
correctly positioning Liftgate platform before disconnecting any lifting
cylinder high pressure hydraulic lines. The following procedure can save
time and prevent accidental fl uid spills and hazards.
FIG. 32-1
STARTER
SOLENOID
LOWERING
SOLENOID
TERMINAL “A”
MOTOR (+)
TERMINAL “B”
BATTERY (+)
TERMINAL “C”
GROUND (-)
TERMINAL “D”
SWITCHED
BATTERY (+)