Harbor Freight Tools 46240-B Problem Probable Cause Solution, Maintenance, Troubleshooting

Troubleshooting

Note: Have the following problems repaired by a qualified service technician.

Problem	Probable Cause	Solution
Air leaking at trigger	Damaged O-rings in trigger valve	Replace O-rings. Then, recheck safety trip
valve area.	housing.	mechanism.
Air leaking between	Loose screws in housing, damaged O-	Tighten screws, or replace O-r ings or
housing and nose.	rings or bumper.	bumper.
Air leaking between	Loose screws or damaged gasket.	Tighten screws or replace gasket.
housing and cap.
Runs slowly or has	Nailer insufficiently oiled, broken	Lubricate as instructed, install new spring, or
	spring in cylinder cap, exhaust port in
power loss.	cap is blocked.	replace damaged internal parts.
	Worn or dirty bumper, damaged push-	Replace bumper or pusher spring, clean
Nailer skips driving nails.	er spring, inadequate air flow, worn or	bumper and drive channel, check fittings,
	dry O-ring on piston, damaged O-ring	replace or lubricate O-rings, replace gasket.
	on trigger valve, cap gasket leaking.
Nails are jammed in	Guide on driver is worn. Wrong size or	Replace guide, use recommended, un-
	damaged nails, loose magazine or	damaged nails, tighten screws, replace
nailer nose.
	nose screws, damaged driver.	driver.
	Rounded driver blade causing slip-	Replace blade, adjust air pressure, check
Nail will not drive down		spring under cap for broken coils or reduced
tight.	page, power loss, slow cycling and	length, check if cap in exhaust por t is
	power loss.	restricted.
Driving nail too deeply.	Worn bumper or piston spacer.	Replace either or both parts.

Warning! Disconnect the Nailer from the air compressor whenever loading or servic- ing. After disconnecting the Nailer from the air compressor, there could still be enough air pressure to fire the Nailer. Always fire the trigger repeatedly to make sure all of the air is expended.

Maintenance

Warning! Always disconnect the tool from the air compressor and then empty the magazine of nails before attempting to inspect or perform maintenance to the Nailer. The following three maintenance procedures can be done by the user of the tool.

1.Inspect all of the nuts and screws and make sure they are securely fastened.

2.Periodically lubricate the driving mechanism and magazine with a light oil. Wipe down with a clean cloth. Never use gasoline or flammable solvents to clean the tool.

3.Inspect your air compressor according to manufacturer’s instructions.

Warning! If you detect any air leaks, power loss, the Nailer skips driving, drives too deep, or not deep enough, take the Nailer to a qualified service technician.

SKU 46240-B For technical questions, please call 1-800-444-3353. Page 9