Anthony Liftgates AC-1600, Maintenance Manual

Low Pressure Threshold Chart

Model 

Power Up

Power Down

1600

2800 psi

350 psi

2000

2800 psi

2500

1850 psi

WARNING

Do not stand or work in the 

platform’s work area while 

operating the liftgate.  Place 

the pressure gauge so it can be read while operating the 

liftgate from a safe location.  Serious injury or death 

could result if this action is not followed.

5.  To adjust the pressure, loosen the lock nut and 

turn Allen screw clockwise to increase pressure or 

counterclockwise to decrease the pressure. 

Retighten 

locknut, and retest the pressure setting.

   Note:   To rest the pressure from zero, turn the adjusting 

screw in all the way, then back out one full 

turn. Retighten lock nut, test liftgate with load. 

If liftgate performs well, set pump pressure 

according to factory settings.

858

857

7

6.  Check the “power down” relief valve pressure in the 

same way as the “power up” by installing a T-fitting and 

pressure gauge in the power down port.

4.12  Checking Flow Control Valve

856

If the cylinder does not operate or operates slower than 

normal, remove the flow control valve and hook the 

hydraulic hose directly to the cylinder.  If the cylinder 

operates properly, replace the flow control valve. 

Replacement part — A-130102.

WARNING

Do not operate the liftgate 

without the flow control 

valve.  Serious injury or 

death could result if this action is not followed.

4.13  Control Switch Fuse - 10 Amp 

If the control switch is not operating the liftgate, check the 

in-line fuse located on the control cable inside the power 

unit box. Replace with A-150438 10A Fuse.

ALI-00596

ALI-00597