Hofmann ATC 900, Service Manual

Page: 48 / 120

CTC-CEN Service Manual 07-13 Rev.E
48
TO REPLACE THE CYLINDER:

Disconnect the air pressure and the power supply.

Disconnect the air pipe from the cylinder.

Remove the rear bolt and take out the cylinder.

Mount the new cylinder.
NOTE: DO NOT OVERTIGHT THE BLOT. WHEN THE SCREW HEAD
AND THE NUT WILL BE IN CONTACT WITH THE CYLINDER
SUPPORT, STOP THE TIGHTENING.

Connect the air pipe from the cylinder.

Connect the air pressure and the power supply.

Check if the machine works fine.

Install the cylinder cover.
7.7 VERTICAL ROD LIFT CYLINDER # EAA0363G79A: CHECK AND REPLACEMENT

: 30’

: 3 and 4mm allen keys, 10mm 30mm end key, rubber hammer.

: Defective vertical rod cylinder may cause the following malfunction:
1. Air leaking from the cylinder.
2. The cylinder would not lift the vertical rod.
TO CHECK THE CYLINDER:

Pull the yellow button of the valve to allow the lifting the vertical rod.

Check if the cylinder is leaking air.
TO REPLACE THE CYLINDER:

Disconnect the air pressure and the power supply.

Disconnect the air pipe from the cylinder.

Disconnect the automatic tool cylinder from the its bracket.

Release the two set screws that secure the cylinder to the arm.

Remove the upper screw from the vertical

Remove the cylinder from the vertical by using the rubber hammer.

Mount the new cylinder on the vertical rod.

Fix the tool cylinder to the bracket.

Secure the bottom side of the cylinder with the two set screws.

Mount the tool cylinder again.

Install the pipe.

Plug the machine to air pressure and power supply.

Check if the machine works fine again.
7.8 VALVE # EAA0338G09A: CHECK AND REPLACEMENT

: 30’

: Medium cross screwdriver, 4mm allen key,10mm end key.