Hofmann ATC 900, Service Manual

Page: 59 / 120

CTC-CEN Service Manual 07-13 Rev.E
59

Plug the machine to the air pressure and power supply.

Check if the machine works fine.

Mount the valves assembly cover.
7.15 WHEEL LIFT CYLINDER # EAA0344G93A: CHECK AND REPLACEMENT

: 30’

: 17mm end key.

: Defective wheel lift cylinder may cause the following malfunction:
1. Air leaking from the cylinder.
2. Lift will not lift the wheels.
3. Wheel lift does not hold the wheels.
4. Air leaking from the valve.
TO CHECK THE EXTERNAL AIR LEAKING

Position the cylinder where it leaks air.

Check if the leaking is in between cylinder flange-cylinder liner or if it is coming from the piston rod.

In case of need, place some soap with water on the interested part to better see where the leaking is coming
from.
TO CHECK THE FITTING AIR LEAKING

Position the cylinder where it leaks air.

Check if the leaking is in between the fitting and the cylinder flange.

In case of need, place some soap with water on the interested part to better see where the leaking is coming
from.
TO CHECK THE CYLINDER WHEN LIFT WILL NOT LIFT THE TIRE BEAD

Position the cylinder where it leaks air.

Disconnect the air pipe where there is not any air pressure.

If the air is getting out from the fitting, the lift cylinder is leaking air.

If the air is getting out from the fitting, the control valve is leaking
air.
TO REPLACE THE CYLINDER: