Craftsman 142.18894 Operation Manual

COLDWEATHEROPERATIONCAUTION:Donotstorein coldenvironment.Frostor icecouldforminsidetoolaffectingoperationanddamagingtool.Usea coldtemperaturelubricant,suchasethylene glycol, when operating tool in freez-ing temperatures.LUBRiCATiONThis is an oilless tool. No lubrication is necessary.BELT HOOK REVERSALTo reattach belt hook to other side of tool, use thesupplied hex wrench stored in belt hook.1. insert hex wrench into hex screw on oppositeside of tool.2. Loosen and remove both screw and hook.3. Reverse sides of screw and hook and tightenhook securely into place.SAFETY MECHANISM CHECKinspect contact trip safety mechanism daily for properoperation. Do not operate tool if mechanism is notoperating 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 contacttrip into workpiece. Tool must not fire.• Pull Trigger while contact trip is clear of work andpointed away from operator and others, Toolmust not fire.• Depress and hold trigger. Push contact tripagainst work where fastener as needed. The toolshould drive only one fastener is needed. Thetool should drive only one fastener each time thecontact trip is pushed against workpiece.If contact trip mechanism does not operate prop-erly, immediately discontinue tool operation andtake the tool to a qualified service dealer for pos-sible repair. Reference the parts list in this manualfor correct replacement parts,SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTIONTrigger cap leaks 1. O-ring damaged 1. Check and replace damaged O-ringair 2. Valve stem, seal or O-rings damaged 2. Check and replace damaged stem, seal or O-ringsCap leaks air 1. Cap bolts loose 1. Tighten bolts2. Damaged gasket 2. Check and replace damaged gasket3. Damaged O-ring 3. Check and replace damaged O-ringNose leaks air 1. 1. Check and replace damaged O-ring2. 2. Check and replace damaged bumper3. 3. Check and replace guideTool will not 1. 1. Check air supplyoperate 2. 2. Replace damaged or worn O-ring or seal3. Replace damage spring4. Clean and grease cap and head valveTool operatesslowly or losespowerTool skips fastenersor inconsistentoperationDamaged cylinder O-ringDamaged bumperRam guide damagedInsufficient air supplyDamaged or worn head valve O-ring orseal3. Damaged head valve spring4. Head valve binding in cap1. Damaged head valve spring2. Damaged or worn O-rings3. Damaged trigger assembly4. Build-up on ram5. Cylinder not sealed on bumperproperly6. Insufficient air supply7. Head valve poorly lubricated1. Worn or damaged bumper2. Build-up on ram or nose3. Insufficient air supply4. Damaged or worn piston O-ring5. Damaged magazine springs6. Magazine-nose bolts loose7. Fasteners too short8. Damaged fasteners9. Incorrect fastener size10. Cap leaks11. Damaged trigger valve seal and O-rings12. Bent or damaged ram13. Dirty magazine14. Damaged or worn magazine1. Check and replace damaged spring2. Check and replace damaged or worn O-rings3. Check and replace trigger assembly4. Clean piston/ram assembly5. Disassemble cylinder and assemble properly6. Check air supply7. Disassemble head valve, clean, grease andassemble properly1. Check and replace bumper2. Clean and grease piston/ram assembly and insideof nose cover3. Check air supply4. Check and replace O-ring5. Check and replace springs6. Align nose with magazine and tighten bolts7. Use only the size and type of fastenersdesignated in the Specifications list in this manual8. Discard damaged fasteners9. Use only the size and type of fastenersdesignated in the Specifications list in this manual10. Tighten cap bolts. Check and replace damagedgasket11. Check and replace damaged seal and O-rings12. Check and replace damaged piston/ram assembly13. Clean magazine and lubricate with a dry, filmlubricant.14. Check and replace magazine7