F a u l t D i a g n o s i s
S y m p t o m
P o s s i b l e C a u s e
Tool fails to operate
Inoperative HydraPac
Loose or disconnected control cord
Defective switch assembly
Faulty hydraulic hose couplings
Tool leaks hydraulic
Depending on what leaks occur,
oil
defective or worn 'O' rings, loose
hydraulic hose connections at tool
Hydraulic oil
Restriction in hydraulic line
overheats
1
Tool operates
Low or erratic hydraulic
erratically and fails
pressure supply
to install fastener
Defective or excessively worn
properly
piston, 'O' ring and back-up rings
and back-up rings in tool
Excessive wear or scoring of
sliding surface of tool parts
2
Pull grooves on
Operator not pushing nose
fastener pintail
completely onto fastener pintail
stripped during pull
before operating tool
stroke
Incorrect fastener length
Worn or damaged jaw segments
Metal chips accumulated in pull
grooves of jaw segments
Excessive sheet gap
Collar of Hydraloc
Improper tool operation
fastener not
Worn anvil in nose
completely swaged
Tool "hang up" on
Improper tool operation
swaged collar
Hydrapac in idler mode
Pintail of fastener
Pull grooves on fastener stripped
fails to break
Improper tool operation
R e m e d y
Check power supply to HydraPac
Check for loose or broken wires
Replace switch assembly
Replace faulty couplings
Check and replace 'O' rings
and back-up rings, or
tighten hydraulic hose
Check couplings and replace
if necessary
See HydraPac instruction
manual
Replace 'O' ring and back-up
rings
Check and replace defective
parts
Instruct operator in proper
installation methods
Use correct length fastener
Check and replace jaw set
Clean jaw segments
Eliminate excessive gap
2
See
Check and replace anvil
1
See
Switch HydraPac off and
on and restart by
depressing trigger switch
2
See
Instruct operator in correct
tool operation
P a g e R e f
continued overleaf
13