Anthony Liftgates AC-1600, Maintenance Manual

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. 

Replacement part — A‑150031

Optional power cut‑off solenoid.

Check solenoid. “4.8 Checking Motor 

Start Solenoid and Power Cut‑off 

Solenoid” on page <?>.  

Replacement part — A‑150263

Dead battery.

Make sure battery is fully charged. 

Check for loose or corroded battery 

connections.  Replace or recharge 

battery.

Circuit protection (200 Amp fuse).

Replace fuse. Refer to “4.6 Power Cable 

Fuse ‑ 200 Amp” on page <?>. 

Replacement part — A‑133610.

Control switch (10 Amp) fuse is blown.

Replace the fuse inside power unit box.  

If problem continues, check for shorts 

in the electrical system. “4.15 Control 

Switch Fuse ‑ 10 Amp” on page <?> 

Replacement part — A‑150438. 

Battery cable.

Inspect main power cable from 

batteries, to circuit breakers, to cut‑off 

switch to power unit. To verify a faulty 

cable, connect motor directly to a spare 

battery using the procedure in the 

Maintenance section.  

Replacement part — A‑133604

Corroded or loose wire connections.

Check all wire connections on power 

unit for corrosion or looseness. Replace 

defective terminals with ‘heat shrink’ 

factory type terminals. 

Motor start solenoid.

Check solenoid. “4.8 Checking Motor 

Start Solenoid and Power Cut‑off 

Solenoid” on page <?>.  

Replacement part — ATU‑120.

Power unit 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.  

Replacement part — A‑150018
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. “4.5 Platform 

Adjustment” on page <?>.  

Replacement part — ATU‑071 SHIM, 14GA

Bushing wear where lift arms connect to 

platform.

Replace bushings. Refer to separate 

Parts Manual.

Structural damage.

Replace worn parts. Refer to separate 

Parts Manual.