Hofmann ATC 900 - 7.18 MH cylinder control valve # EAA0328 G73 A: check and replacement

CTC-CEN Service Manual 07-13 Rev.E
63
 Take the cylinder lock it to the MH arm.
 Plug the hoses
 Install the bead depressor.
 Connect the air pressure and check if it works fine again.
7.18 MH CYLINDER CONTROL VALVE #EAA0328G73A: CHECK AND REPLACEMENT
 : 30’
 : End key 5 and 22mm, Allen key 3mm.
 : Defective control valve may cause the following malfunction:
1. Air leaking
2. Low bead pushing pressure
3. Slow MH motion
TO CHECK THE MH CONTROL VALVE:
 Follow paragraph 7.14
TO REPLACE THE MH CONTROL VALVE:
 Disconnect the air pressure form the machine
 Remove the joystick knob and the nut
 Remove the control valve cover.
 Unscrew the screws that secure the valve to its cover.
 Unplug the air hoses from the valve.