Troubleshooting Guide - DeWalt DW66C-1 Instruction Manual

MANY COMMON PROBLEMS CAN BE SOLVED EASILY BY UTILIZING THE CHART BELOW.
FOR MORE SERIOUS OR PERSISTENT PROBLEMS, CONTACT A D
fasteners from magazine before making any adjustments or servicing this tool.
SYMPTOM
Trigger valve housing leaks air
Trigger valve stem leaks air
Frame/nose leaks air
Frame/cap leaks air
Failure to cycle
Lack of power; slow to cycle

TROUBLESHOOTING GUIDE

WARNING: To reduce the risk of serious personal injury, remove
CAUSE
O-ring cut or cracked
O-ring/seals cut or cracked
Loose nose screws
O-ring or Gasket is cut or cracked
Bumper cracked/worn
Damaged gasket or seal
Cracked/worn head valve bumper
Loose cap screws
Air supply restriction
Tool dry, lack of lubrication
Worn head valve O-rings
Broken cylinder cap spring
Head valve stuck in cap
Tool dry, lacks lubrication
Broken cylinder cap spring
O-rings/seals cut or cracked
Exhaust blocked
Trigger assembly worn/leaks
Dirt/tar build up on driver
Cylinder sleeve not seated correctly on bottom
bumper
Head valve dry
Air pressure too low
13
WALT SERVICE CENTER OR CALL 1-(800)-4-D
E
FIX
Replace O-ring
Replace trigger valve assembly
Tighten and recheck
Replace O-ring or gasket
Replace bumper
Replace gasket or seal
Replace bumper
Tighten and recheck
Check air supply equipment
Use D WALT pneumatic tool oil
E
Replace O-rings
Replace cylinder cap spring
Disassemble/Check/Lubricate
Use
D WALT pneumatic tool oil
E
Replace cap spring
Replace O-rings/seals
Check bumper, head valve spring, muffler
Replace trigger assembly
Disassemble nose/driver to clean
Disassemble to correct
Disassemble/lubricate
Check air supply equipment
WALT.
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