Instruction manual
11 
TROUBLESHOOTING 
Item numbers in parentheses refer to assembly drawing part numbers on page 9. 
Problem Possible Cause  Remedy 
More than 
one 
operation of 
the trigger 
needed to 
place 
fastener 
  Air leak 
  Insufficient air pressure 
  Air Lubrication 
  Worn or broken jaws 
  Improper adjustment of set nut (13) 
  Low oil level or air bubble in hydraulic oil 
  Build up of dirt inside the nose assembly 
  Tighten joints or replace components 
  Adjust air pressure to within specification 
  Lubricate tool at air inlet point 
  Install new jaws 
  adjust set nut (13) clockwise 1 rotation 
  See Priming Procedure 
 Service nose assembly 
Tool will 
not grip 
stem of 
fastener 
  Worn, broken or missing jaws 
  Build up of dirt inside the nose assembly 
  Loose jaw housing 
  Weak or broken spring in nose assembly 
  Incorrect component in nose assembly 
  Rotary valve incorrectly adjusted 
  Fit new jaws 
  See Jaw Cleaning Procedure 
  Tighten against locking ring 
  Fit new spring 
  Identify and replace 
 Read ‘Operation’ 
Jaws will 
not release 
broken 
stem of 
fastener 
  Build up of dirt inside the nose assembly 
  Jaw housing, nose tip or nose casing not 
properly seated 
  Improper adjustment of set nut (13) 
  Weak or broken spring in nose assembly 
  Air Leak or Air pressure below 90 psi 
  Low oil level or air bubble in hydraulic oil 
  See Jaw Cleaning Procedure 
  Tighten nose assembly and adjust if necessary 
  adjust set nut (13) counter-clockwise 1 rotation 
  Fit new spring 
  Tighten joints or replace components 
Adjust as in ‘Operating Procedure’ to 90 psi 
 See Priming Procedure 
Jammed 
Gun / 
Cannot 
feed next 
fastener 
  Broken stems jammed inside tool 
  Rotary valve incorrectly adjusted 
  Air pressure below 90 psi 
  Empty mandrel collector 
Check if jaw pusher (7) is cracked/broken 
Check if Vacuum Sleeve (16) is cracked/broken 
  Adjust vacuum pressure 
 Adjust as in ‘Operating Procedure’ to 90 psi 
Slow cycle    Lack of lubrication 
  Low air pressure 
  Low oil level or air bubble in hydraulic oil 
  Build up of dirt inside the nose assembly 
  Lubricate tool at air inlet point 
  Adjust air pressure to within specification 
  See Priming Procedure 
 Service nose assembly 
Tool fails to 
operate 
  No air pressure 
  On/Off switch is in off position 
  Damaged trigger valve 
  Loose pneumatic piston cover 
  Loose stem collector 
  Oil leaking in the air filter 
  Air leaking in the air filter 
  Adjust as in ‘Operating Procedure’ to 90 psi 
  Slide On/Off sleeve (54) down until air is flowing 
  See ‘Trigger Maintenance’ Page 7 
  Disconnect Air Pressure, Tighten all connections 
  Disconnect Air Pressure, Tighten Cap (28) 
  Replace part number RK8000M-63 With Berent 
Tool (call for service for especial tool ) 
 Replace Number # 48 , 47 , 48 , 55 , 49 . 
Fastener 
fails to 
break 
  Insufficient air pressure 
  Fastener outside tool capability 
  Low oil level or air present in oil 
  Adjust as in ‘Operating Procedure’ to 90 psi 
  Use more powerful tool 
Contact Industrial Rivet for assistance 
 See Priming Procedure 
Insufficient 
Vacuum 
Pressure 
  Insufficient Air Pressure 
  Improper Vacuum Pressure Adjustment 
  The part # (17) plastic sealing sleeve are 
broke. 
  The air is pushed the mandrel out from the 
nose. 
   
  Adjust as in ‘Operating Procedure’ to 90 psi 
  See “Operation” for proper adjustment 
  Replace with new part 
  Make sure the part # (13) set nut are in the 
correct distance. 










