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TROUBLESHOOTING
PROBLEM CAUSE CORRECTION
Trigger valvehousing leaksair O-ring cutor cracked . .. ... .. ... ... ... .. .ReplaceO-ring
T
rigger valve stemleaks air O-ring/seals cutor cracked .. .. ... ... ... .Replacetrigger valveassembly
Frame/nose leaks air O-ring orgasket iscut or cracked ... ... .. .ReplaceO-ring or gasket
B
umper cracked/worn . ... .. ... ... ... .. ..Replace bumper
Frame/cap leaks air Damaged gasketor seal .. .. ... ... .. ... ..Replace gasketor seal
Cracked/worn headvalve . ... ... .. ... ...Replace head valve
Loose capscrews . .. ... ... .. ... ... ... .. .Tighten andrecheck
Failure tocycle Air supplyrestriction .. ... .. ... ... ... .. ..Check airsupply equipment
Wornhead valve ... .. ... ... ... .. ... ... .Replacehead valve
B
roken cylindercap spring .. ... ... ... .. ..Replace cylindercap spring
Head valvestuck incap ... ... ... .. ... ... .Disassemble/ Check/ Lubricate
Lack of power;slow tocycle Broken cylindercap spring . .. ... ... ... .. .Replacecap spring
R
ings/seals cutor cracked . .. ... ... ... ...Replace rings/seals
Exhaust blocked ... ... .. ... ... ... .. ... ..Check bumper, headvalve spring
Trigger assemblyworn/leaks .. .. ... ... .. .Replacetrigger assembly
Dirt/tar buildup ondriver . ... ... .. ... ... .Disassemblenose/driver toclean
Cylinder sleevenot seatedcorrectly
on bottombumper . .. ... .. ... ... ... .. ... .Disassembleto correct
Air pressuretoo low . .. ... .. ... ... ... ... .Checkair supplyequipment
Clogged airfilter .. .. ... ... .. ... ... ... ...Clean orreplace air filter
Skipping fasteners;
intermittent feed Wornbumper ... ... .. ... ... ... .. ... ... ..Replace bumper
Tar/dirt indriver channel . .. ... ... .. ... ...Disassemble and cleannose anddriver
Air restriction/inadequateair flowthrough
quick disconnectsocket andplug .. .. ... ..Replace quickdisconnect fittings
Wornpiston ring .. ... ... ... .. ... ... ... ..Replace ring, checkdriver
Damaged pusherspring .. ... .. ... ... ... ..Replace spring
Low airpressure . ... ... .. ... ... ... .. ... .Checkair supply system totool
Loose magazinenose screws .. ... .. ... ..Tighten allscrews
Fasteners tooshort fortool . ... ... ... .. ...Use only recommendedfasteners
Bent fasteners . ... ... .. ... ... ... .. ... ...Discontinue using thesefasteners
Wrongsize fasteners . ... .. ... ... ... .. ...Use only recommendedfasteners
Leaking headcap gasket. ... ... ... .. ... ..Tighten screws/replacegasket
Trigger valveO-ring cut/worn .. .. ... ... ...Replace O-ring
Broken/chipped driver .. ... .. ... ... ... .. .Replacedriver (check pistonring)
Dry/dirty magazine . ... ... ... .. ... ... ... .Clean/lubricateuse BOSTITCHAir Tool Lubricant
Wornmagazine .. ... ... ... .. ... ... ... .. .Replacemagazine
Clogged airfilter .. .. ... ... ... .. ... ... ...Clean orreplace air filter
Fasteners jam intool Driverchannel worn .. ... ... ... .. ... ... ..Replace nose/checkdoor
Wrongsize fasteners . ... .. ... ... ... .. ...Use only recommendedfasteners
Bent fasteners . ... ... .. ... ... ... .. ... ...Discontinue using thesefasteners
Loose magazine/nosescrews .. ... ... .. ..Tighten allscrews
Broken/chipped driver .. ... .. ... ... ... .. .Replacedriver