16 17
FAULT DIAGNOSIS
Symptom Possible Cause Remedy Page
Ref
Pneumatic motor Air leak from motor Check for worn seals. Replace 12
runs slowly Low air pressure Increase 5
Air way blockage Clear restriction in air supply
Worn drive screw Replace 7
Vanes jamming Lubricate tool through air inlet
Insert does not Stroke incorrectly set Adjust 6
deform properly Air pressure outside the tolerance Adjust 6
Low oil level Prime tool 15
Insert out of grip Check grip range of Insert
Drivescrew turns Worn or damaged drive shaft Replace
independent of Worn or damaged drive screw Replace 7
motor Adaptor nut loose Tighten 7
Locking ring 90 missing Fit new locking ring 12
Insert will not place Incorrect Insert thread size Change to correct insert
onto drivescrew Incorrect drive screw fitted Change to correct drive screw
Worn or damaged drive screw Replace
Nose equipment incorrectly Disconnect air supply, 5-6
assembled re-fit nose equipment carefully
Tool is jammed on Excessive force/ DO NOT DEPRESS TRIGGER.
placed insert Defective insert/ Unlock force locking device and bring rear
Worn or defective drive screw casing forward to zero stroke position.
Depress trigger. Tool should spin off.
Reset stroke. If unable to reset, disconnect
air to tool. Insert a 4 mm 0 pin through
nose casing slots into Spindle 44.
Turn until drive screw leaves. Insert.
Use new insert and drive screw.
Drive screw breaks Force of tool excessive Re-set force
Side load on drive screw Hold tool square to application when
placing Insert
Item numbers in bold refer to General Assembly drawings and Parts List (pages 12-13). Item numbers in bold refer to General Assembly drawings and Parts List (pages 12-13).
Symptom Possible Cause Remedy Page
Ref
Tool does not Screw adaptor nut loose Tighten
spin on No air supply Connect 5
Insufficient gap between Lock Nut 45 Adjust gap to between 1.5 - 2 mm 12
and Spindle 44
Push rod 78 too short Replace 12
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
Drive screw does Lip Seal 18 is defective Replace 9
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 12
Distributor stuck Lubricate
Air motor jammed Lubricate tool at air inlet.
If insufficient dismantle and clean
air motor thoroughly.
To Next Page
