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SAFETY MECHANISM
CHECK
Inspect contact trip safety mechanism daily for proper
operation. Do not operate tool if mechanism is not
operating properly.
With the red trigger switch in the rapid-fire mode,
perform the following procedures to test safety mech-
anism:
•
Leave trigger untouched while pushing contact
trip into workpiece. Tool must not fire.
•
Pull Trigger while contact trip is clear of work
and pointed away from operator and others,
Tool must not fire.
•
Depress and hold trigger. Push contact trip
against work where fastener as needed. The tool
should drive only one fastener is needed. The
tool should drive only one fastener each time the
contact trip is pushed against workpiece.
If contact trip mechanism
does not operate prop-
erly, immediately
discontinue
tool operation
and
take the tool to a qualified
service
dealer for pos-
sible repair. Reference the parts list in this manual
for correct replacement parts,
SYMPTOM
POSSIBLE
CAUSE(S)
CORRECTIVE
ACTION
Trigger cap leaks
1.
O-ring damaged
1.
Check and replace damaged O-ring
air
2.
Valve stem, seal or O-rings damaged
2.
Check and replace damaged stem, seal or O-
rings
Cap leaks air
1.
Cap bolts loose
1.
Tighten bolts
2.
Damaged gasket
2.
Check and replace damaged gasket
3.
Damaged O-ring
3.
Check and replace damaged O-ring
Nose leaks air
1.
1.
Check and replace damaged O-ring
2.
2.
Check and replace damaged bumper
3.
3.
Check and replace guide
Tool will not
1.
1.
Check air supply
operate
2.
2.
Replace damaged or worn O-ring or seal
3.
Replace damage spring
4.
Clean and grease cap and head valve
Tool operates
slowly or loses
power
Tool skips fasteners
or inconsistent
operation
Damaged cylinder O-ring
Damaged bumper
Ram guide damaged
Insufficient air supply
Damaged or worn head valve O-ring or
seal
3.
Damaged head valve spring
4.
Head valve binding in cap
1.
Damaged head valve spring
2.
Damaged or worn O-rings
3.
Damaged trigger assembly
4.
Build-up on ram
5.
Cylinder not sealed on bumper
properly
6.
Insufficient air supply
7.
Head valve poorly lubricated
1.
Worn or damaged
bumper
2.
Build-up on ram or nose
3.
Insufficient air supply
4.
Damaged or worn piston O-ring
5.
Damaged magazine springs
6.
Magazine-nose
bolts loose
7.
Fasteners too short
8.
Damaged fasteners
9.
Incorrect fastener size
10. Cap leaks
11. Damaged trigger valve seal and O-
rings
12. Bent or damaged ram
13. Dirty magazine
14. Damaged or worn magazine
1.
Check and replace damaged spring
2.
Check and replace damaged or worn O-rings
3.
Check and replace trigger assembly
4.
Clean piston/ram assembly
5.
Disassemble
cylinder and assemble properly
6.
Check air supply
7.
Disassemble
head valve, clean, grease and
assemble properly
1.
Check and replace bumper
2.
Clean and grease piston/ram assembly and inside
of nose cover
3.
Check air supply
4.
Check and replace O-ring
5.
Check and replace springs
6.
Align nose with magazine and tighten bolts
7.
Use only the size and type of fasteners
designated
in the Specifications
list in this manual
8.
Discard damaged fasteners
9.
Use only the size and type of fasteners
designated
in the Specifications
list in this manual
10. Tighten cap bolts. Check and replace damaged
gasket
11. Check and replace damaged seal and O-rings
12. Check and replace damaged piston/ram assembly
13. Clean magazine and lubricate with a dry, film
lubricant.
14. Check and replace magazine
7
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