The reason and repair way for the nailer’s leaks air

Tools leaks air through nose when trigger is depressed.Piston/driver does not return fully.

The reasons are as follows:

(1)Bumper cracked or damaged.Replace bumper

(2)Piston or cylinder damaged.Replace damaged part.

(3)Piston O-ring worn or damaged.Replacement O-ring.

(4)Air pressure too low or restricted.Check the lines/compressor. Restriction can be

moisture,dirt,or hoses and fittings too small for tool volume requirements.

(5)Driver blade bent or damaged at driving end.Replace driver blade.

(6)Dirt/tar build up on driver. Disassemble and clean nose/driver.

(7)Air exhaust clogged with dirt or built up old lubricant.

(8)Lack of lubrication.Clean and lubricate tool,replace worn o-rings.

(9)Check valve seal.This is an o-ring found on the outside diameter of the

cylinder sleeve and should be installed over the holes found approximately

2/3 of the way down the sleeve.The o-ring should be in the groove over the holes.

Tool leaks air from trigger when actuated,tool does not cycle.

（1）O-ring on outside diameter of head valve piston worn.Replace o-ring.

（2）Damaged or worn head valve piston.Replace head valve and o-ring.

Tool leak air from exhaust area.

（1）O-ring on the inside of the head valve piston worn or damaged.Replace o-ring

（2）O-ring on the outside of the head valve piston worn or damaged.Replace o-ring

（3）Cylinder seal or cylinder sleeve o-rings worn or damaged.Check o-rings around.

（4)Cylinder and where the cylinder seals to sleeve or body.Replace damaged o-rings.

(5)Damaged head valve.Replace worn or damaged head valve and o-rings.

(6)Cylinder cap not sealing.Check for loose cap screws are fully tightened.

Air leak near top of tool

(1)Check to make sure cap or cap screws are fully tightened

(2)O-rings on the top pf trigger valve shaft damaged.Replace o-ring

(3)O-rings on main valve damaged or worn.Replace o-rings.Products

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Coil nails, framing nails, Coil nailers, framing guns