Anthony Liftgates ETU-20-44, Maintenance Manual

Page: 16 / 20

Anthony Liftgates, Inc.
16
ETU Maintenance
www.anthonyliftgates.com 800-482-0003
5. Troubleshooting Chart
Troubleshooting Chart
Problem Possible Causes Possible Solution
Motor does not run when
control switch is activated. Cab cut-off switch. Turn switch to ON position.
Truck battery. Make sure battery is fully charged.
Check for loose or corroded battery
connections.
Replace or recharge battery.
Circuit protection fuse in power cable. Replace fuse. Check the power cable
fuse. “3.5.3 Checking the 175 Amp
Power Cable Fuse” on page 11
Control box switch. If the control switch does not work:
Check the 10 Amp fuse. Replace, if fuse
is blown. If problem continues, check
for shorts in the electrical system. “3.5.1
Checking 10 Amp Control Switch Fuse”
on page 11
Check the power cable fuse. “3.5.3
Checking the 175 Amp Power Cable
Fuse” on page 11
Motor start solenoid. Check solenoid. “3.5.4 Checking Motor
Start Solenoid” on page 12
Power cable. Connect motor directly to a spare
battery. “3.5.5 Checking the Power
Cable” on page 12
Motor. If the motor is determined to be
defective, it should be replaced.
Defective motors are typically caused
by weak batteries (low Voltage), loose
connections, corrosion, or a poor
ground.
If the motor does not operate in freezing conditions, make sure the motor housing
does not contain water.
Sagging platform. Normal wear. Add shims to platform. “3.3 Mechanical
Platform Adjustment” on page 8.
Bushing wear where lift arms connect to
platform. Replace bushings.
Structural damage. Replace damaged parts.
Foaming oil. Air in the hydraulic hose. Check oil level in reservoir. “3.4.1
Adding Fluid to Power Unit Reservoir”
on page 9.
Broken or loose fluid return tube. Remove the oil reservoir and make sure
the return tube is below the oil level.
If the tube has turned or fallen out,
reinstall it into the pump housing. Use
a center punch to “stake” the tube into
position.