Atlas Copco ALF 72D Consignes De Sécurité Et D'utilisation page 16

Safety and operating instructions
Troubleshooting
Basic troubleshooting guide
Problem Cause
Insufficient feed Low air pressure
force
Valve 121 0726 80 has stuck
or packings 066 2124 00 are
worn (only ALF models).
Piston rod packing worn or
deformed.
For wear limits and tightening torques, see the light rock drills service information, Atlas Copco document no. 985 1086 01.
1
Gauge for chuck bushing 22mm (7/8") hexagon shank Atlas Copco no. 091 008 00.
2
Use Atlas Copco no. 9090 0550 80 pressure gauge to test the water and air pressure.

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Solution
Increase air pressure to 6 bar.
Dismantle the valve and clean it if necessary. Replace
packings if worn or deformed.
Replace the packing
© 2006 Atlas Copco Construction Tools AB
ALF 72D, ALF 72D-1, ALF 67/80D, BMK 62S
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No. 9800 0680 71
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2006-11-20