O R I G I N A L I N S T R U C T I O N
28
Symptom
Cause
Remedy
Clutch noise, tool not
actuating
Clutch service life reached
Remove battery, return tool to nearest
STANLEY approved Service Center for
servicing
“Mandrel slip” – jaws will
not grip mandrel
Worn or dirty tail jaws
Clean or renew as necessary (5.3.2)
Broken spring in cartridge
Replace as necessary (5.3)
Unable to insert mandrel
during reload
Jaws will not release
mandrel
Drive mechanism drifting
Replace OP-Seal on ball screw
Tail jaws lodged together
Clean or renew jaws as necessary (5.3)
Tail Jaws remain open
Tool is in open position
Pull trigger for >1s until LED fl ashes at
regular 1 second interval. Position the
mandrel, pull trigger for >1s to return
the tool to home position.
Tail jaw cartridge incorrectly
assembled
Ensure assembly of tail jaws is correct
(5.3.2)
Unable to remove Tail Jaw
Cartridge
Mandrel still fi tted in tool
Follow instructions to remove mandrel
(reverse of 5.2)
Tool is in open position
See Tool is in open position instruction
Fasteners will not feed
through Nose Jaws
Worn Tail Jaws
Replace Tail Jaws (5.3)
Cursor orientation incorrect
Refi t ensuring correct orientation
(4.2.3)
Incorrect Nose Jaws
Fit correct nose jaws
Mandrel follower spring not fi tted
Fit correct mandrel follower spring
Incorrect gap between fastener
head and Nose Jaws when closed
Set gap to 1.5mm – 3mm (1/16” –
1/8”) (5.2)
Cursor sticking
Clean and oil cursor
Check barrel bore for debris
Weak outer spring around cursor
Renew cursor (4.2.3)
Incorrect Mandrel Follower Spring
fi tted
Fit correct mandrel follower spring
Build-up of debris in Nose Jaws
Clean nose jaws, apply a conservative
amount of lithium-based grease to
inside contact faces
Excessive tail jaw wear
High broach load
Check application hole size and
thickness and fastener grip capability
Feeding more than one
fastener at a time
Mandrel slip
Check as for ‘mandrel slip’
Incorrect gap between fastener
head and nose jaws when loaded
Set gap to 1.5mm – 3mm (1/16” –
1/8”)
*Other symptoms should be reported to your local STANLEY Engineered fastening representative or repair
center.
