FAULT DIAGNOSIS
FAULT DIAGNOSIS TABLE
SYMPTOM
Tool reverses
before Insert
is Placed
POSSIBLE CAUSE
-,
Worn thrust bearing or thrust washers
REMEDY
—0 Replace
—0
Dirty insert threads
—+
Change batch
of inserts
—0 Worn drive screw
—0 Replace
—0 Lack of lubrication on drive screw
(Standard Nutserts only)
—0 Lubricate drive screw properly (see page 6)
-+ Thrust spring not fitted
-+
Fit thrust spring
—0
Clutch torque setting too low
—0 Adjust to correct setting
-+ Insufficient pressure/volume of air
—o Check air supply/fittings
Tool runs slowly
-+ Insufficient air pressure
-+ Adjust air pressure at base of handle. 5 - 8 bar maximum.
—0 Incorrect bore of hose
—0 Ensure bore of hose is 6.4mm minimum
—0 Insufficient air volume
—0 Ensure there is no restriction in the air supply or connections
—o Tool not properly lubricated internally
-0 Lubricate as per instructions
Tool fails to start
—0 Tool
not properly lubricated
—0 Lubricate then depress trigger several times
—0 Restricted air pressure/volume
—0 Ensure there is no restriction in the air supply
Tool runs
permanently
in reverse mode
—o Push rod too long
—o Replace with one of correct length
—o Insufficient air supply
—o
Adjust air pressure/volume
Tool runs
permanently
in forward mode
—o
Push rods/needle roller missing
—o Replace where necessary
—o Air leak around screw
43
—0 Seal with thread sealant
—0 Push rod too short
—0 Replace
Inserts not
pulling up
—0 Torque setting too low
—0 Adjust to correct setting
-9 Insufficient air pressure/volume
-4 Adjust air pressure/volume
-P Inserts
out of grip
-9 Select correct insert
—0 Lack of lubrication on insert
—0 Change batch of inserts
—o
Lack of lubrication on drive screw
(Standard Nutserts only)
-4 Lubricate drive screw correctly (see page 6)
—0
Insert thread restricted
—0 Change Inserts
—9 Drive screw thread worn
—0 Replace drive screw
-4 Incorrect insert/drive screw
-4 Replace with correct insert/drive screw
Standard Nutserts
centres falling out
—0 Dirty Nutserts
—0 Clean Nutserts
—0 Clutch torque setting too low
—0 Adjust to correct setting
-+ Application thickness below minimum
recommended grip
-4 Change to correct Insert
—0 Oversize hole in application
—0 Correct hole size in application
Worn drive screws
—0 Clutch torque setting too high
-9 Adjust to correct
setting
—o Drive screw not lubricated
-4 Lubricate drive screw regularly when using Standard Nutserts
—0 Inserts not lubricated
—0 Change batch of inserts
—0 Tool not held correctly
—0 Ensure tool is held square to application
-4 Incorrect insert/drive screw threads
-4 Replace with correct insert/drive screw
—o Restricted insert threads
—o Change batch of inserts
16
F A U L T D I A G N O S I S T A B L E
F
A U L T D I A G N O S I S
SYMPTOM POSSIBLE CAUSE REMEDY
Tool reverses ➝Worn thrust bearing or thrust washers ➝Replace
before Insert ➝Dirty insert threads ➝Change batch of inserts
is Placed ➝Worn drive screw ➝Replace
➝Lack of lubrication on drive screw ➝Lubricate drive screw properly (see page 6)
(Standard Nutserts only)
➝Thrust spring not fitted ➝Fit thrust spring
➝Clutch torque setting too low ➝Adjust to correct setting
➝Insufficient pressure/volume of air ➝Check air supply/fittings
Tool runs slowly ➝Insufficient air pressure ➝Adjust air pressure at base of handle. 5 - 8 bar maximum.
➝Incorrect bore of hose ➝Ensure bore of hose is 6.4mm minimum
➝Insufficient air volume ➝Ensure there is no restriction in the air supply or connections
➝Tool not properly lubricated internally ➝Lubricate as per instructions
Tool fails to start ➝Tool not properly lubricated ➝Lubricate then depress trigger several times
➝Restricted air pressure/volume ➝Ensure there is no restriction in the air supply
Tool runs ➝Push rod too long ➝Replace with one of correct length
permanently ➝Insufficient air supply ➝Adjust air pressure/volume
in reverse mode
Tool runs ➝Push rods/needle roller missing ➝Replace where necessary
permanently ➝Air leak around screw 43 ➝Seal with thread sealant
in forward mode ➝Push rod too short ➝Replace
Inserts not ➝Torque setting too low ➝Adjust to correct setting
pulling up ➝Insufficient air pressure/volume ➝Adjust air pressure/volume
➝Inserts out of grip ➝Select correct insert
➝Lack of lubrication on insert ➝Change batch of inserts
➝Lack of lubrication on drive screw ➝Lubricate drive screw correctly (see page 6)
(Standard Nutserts only)
➝Insert thread restricted ➝Change Inserts
➝Drive screw thread worn ➝Replace drive screw
➝Incorrect insert/drive screw ➝Replace with correct insert/drive screw
Standard Nutserts ➝Dirty Nutserts ➝Clean Nutserts
centres falling out ➝Clutch torque setting too low ➝Adjust to correct setting
➝Application thickness below minimum ➝Change to correct Insert
recommended grip
➝Oversize hole in application ➝Correct hole size in application
Worn drive screws ➝Clutch torque setting too high ➝Adjust to correct setting
➝Drive screw not lubricated ➝ Lubricate drive screw regularly when using Standard Nutserts
➝Inserts not lubricated ➝Change batch of inserts
➝Tool not held correctly ➝Ensure tool is held square to application
➝Incorrect insert/drive screw threads ➝Replace with correct insert/drive screw
➝Restricted insert threads ➝Change batch of inserts
16