Atlas Copco ALF Serie Consignes De Sécurité Et D'utilisation page 15

ALF 71, ALF 71-1, ALF 67/80, BMT 51
Troubleshooting
Problem
Insufficient feed force
Piston is pushed out of cylinder
when feed controls are shut of.
Accessories
Accessory
Lubricator for BBC, BBD, Rh:
BLG 0, for mineral oil
CLG 0, for both mineral and synthetic oil
Water separator for BBC, BBD, Rh
VAM 5A, for airflow up to 120 l/s (254 cfm)
Pressure gauge for compressed air and water pressure
Gauge
Extra needle set
Vibration gloves
Size L
Size XL
For information about other accessories, see the Accessories catalog (Atlas Copco document No. 9800 004 01)
For information about drill steels, contact Atlas Copco Secoroc.
© 2006 Atlas Copco Construction Tools AB
www.CrowderSupply.com • Toll Free: 888-883-5144
Cause
Low air pressure
Packings in the bayonet coupling
worn or deformed
Piston rod packing worn or
deformed.
Valve 121 0726 80 has stuck or
packings 066 2124 00 are worn
(the parts are located in the rock
drills backhead)
Too high air pressure
Spring, ball or valve seat 121
076 00 worn (the parts are
located in the rock drills backhead
| |
No. 9800 0681 71 2006-11-20
Safety and operating instructions
Solution
Increase air pressure to 6 bar
Replace the packing
Replace the packing
Dismantle the valve and clean it
if necessary. Replace packings if
worn or deformed
Decrease air preassure to 6 bar
Replace worn parts
Ordering No.
8202 5102 05
8202 5102 9
8092 0110 82
9090 0550 80
9090 0678 90
9800 044 01
9800 045 01
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