21
Fault Diagnosis
Symptom
Possible Cause
Remedy
Page Ref.
Short stroke or
incomplete return
Reduced air pressure
Adjust air pressure
Check for leaks
Oil level in tool low or air in oil
Reprime tool
17 – 20
Tool fails to grip Lockbolt
Incorrect nose assembly fitted
Change to correct nose assembly
7 – 8
Broken jaws in nose assembly
Replace
8
Worn or dirty jaws
Clean or renew as necessary
8
Oil level in tool low or air in oil
Reprime tool
17 – 20
Tool fails to break
Lockbolt
Insufficient air pressure
Adjust air pressure
Check for leaks
Incorrect length of bolt
Change to correct length bolt
Tool requires priming
Reprime tool
17 – 20
Control valve dirty
Remove and clean valve
13 – 14
Exhaust silencer dirty
Clean silencer
13 – 14
Tool fails to swage collar
Insufficient air pressure
Adjust air pressure
Check for leaks
Worn anvil
Replace
8
Tool requires priming
Reprime tool
17 – 20
Swaging anvil cracked
Replace
8
Incorrect length of bolt
Change to correct length bolt
Placing tool does not
eject the collar from the
anvil
Reduced air pressure
Adjust air pressure
Check for leaks
Oil level in tool low or air in oil
Reprime tool
17 – 20
Worn or damaged hydraulic seals in tool
Inspect tool – replace worn or damaged seals
13 – 14
Pull grooves on fastener
pintail stripped during
installation
Operator not pushing nose equipment
completely on to fastener pintail before
operating tool
Instruct operator in correct installation method
6
Incorrect fastener length / grip length
Use correct fastener
Worn or damaged jaw segments
Check and replace jaw set
8
Debris in jaw segments and / or pintail
grooves
Clean jaw segments
8
Excessive sheet gap
Close gap between sheets
Oil level in tool low or air in oil
Reprime tool
17 – 20
Tool slows and fails to
actuate
Control valve dirty
Remove and clean valve
13 – 14
Exhaust silencer dirty
Clean silencer
13 – 14