18
Fault Diagnosis
Tool does not Screw adaptor nut loose Tighten
spin on No air supply Connect 7
Insufficient gap between locknut
45 and Adjust to 1.5 mm gap to 2mm gap 13
spindle 44
Push rod 78 too short Replace 13
Air motor jammed Lubricate tool at air inlet. If insufficient
dismantle and clean air motor thoroughly
Trigger Static friction Depress trigger a few times
inoperative Low air pressure Increase air pressure
Valve piston remains stuck Depress trigger several times. Lubricate
tool through air inlet. If unsuccessful,
dismantle, clean and lubricate trigger
elements
Drivescrew does Lip seal 18 is defective Replace 12
not return and/or
keeps spinning off
Tool does not Adaptor nut 92 loose Tighten
spin off No air supply Connect
Rear casing unscrewed by more than Set tool stroke
5 turns
‘O’ ring 82 leaking air Replace 13
Distributor stuck Lubricate
Air motor jammed Lubricate tool at air inlet. If insufficient
dismantle and clean air motor
thoroughly
Item numbers in bold refer to general assembly drawings and parts list (pages 14-15).
Other symptoms or failures should be reported to your local Avdel authorised distributor or repair centre.
Symptom Possible Cause Remedy Page Ref
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