Harbor Freight Tools 66995 Troubleshooting, Problem Possible Causes Likely Solutions

4. Pull out the jammed fastener and the 5.	If you are unable to clear the fastener
remainder of the fastener strip that is	jam using the method prescribed
still in the magazine. Dispose of the	above, the tool should be taken to a
remaining fastener strip; it may be	qualified service technician for proper
bent or damaged in some other way.	servicing.

Troubleshooting

Problem		Possible Causes		Likely Solutions
Insufficient	1. Not enough air pressure.		1.	Check for loose connections and make
fastener depth.				sure that air supply is providing enough air
				pressure (PSI) to the tool’s air inlet. Do not
				exceed maximum air pressure.
	2.	Incorrect lubrication or not	2.	Lubricate using air tool oil and grease
		enough lubrication.		according to directions.
	3.	Blocked air inlet screen (if	3.	Clean air inlet screen of buildup.
		equipped).

4.Mechanism contaminated. 4. Have qualified technician clean and lubricate mechanism. Install in-line filter in air supply as stated in Initial Set Up: Air Supply.

Fasteners drive	1.	Too much air pressure.	1.	Reduce air supply pressure (PSI).
too deeply.
Tool cycles	1.	Jammed fastener.	1.	Clear jammed fastener according to Clearing
without firing				Jams instructions.
fastener.	2.	Tool empty.	2.	Fill with correct fasteners.
	3.	Incorrect fasteners used.	3.	Empty, then fill with correct fasteners.
	4.	Magazine dirty or not	4.	Clean and lubricate magazine and pusher.
		lubricated properly.

5.Insufficient air flow.5. Check for loose connections and make sure that air supply is providing enough air flow (CFM) and pressure (PSI) to the tool’s air inlet. Do not exceed maximum air pressure.

Frequent	Incorrect fastener type.		Confirm fastener diameter, type, length, angle,
jamming.			and collation type. Correct as needed.
Severe air	1. Cross-threaded housing		1.	Check for incorrect alignment and uneven
leakage.		components.		gaps. If cross-threaded, disassemble and
				replace damaged parts before use.
	2.	Loose housing.	2.	Tighten housing assembly. If housing cannot
				tighten properly, internal parts may be
				misaligned.
	3.	Damaged valve or housing.	3.	Replace damaged components.
	4.	Dirty, worn or damaged valve.	4.	Clean or replace valve assembly.

Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect air supply before service.

SKU 66995 For technical questions, please call 1-800-444-3353. Page 13