Harbor Freight Tools 68128 Troubleshooting, Problem Possible Causes Likely Solutions

Troubleshooting

Problem		Possible Causes		Likely Solutions
Decreased output.	1. Not enough air pressure and/		1.	Check for loose connections and make sure
		or air flow.		that air supply is providing enough air flow
				(CFM) at required pressure (PSI) to the tool’s
				air inlet. Do not exceed 90 PSI maximum
				air pressure.
	2.	Obstructed trigger.	2.	Clean around trigger to ensure free
				movement.
	3.	Incorrect lubrication or not	3.	Lubricate using air tool oil and grease
		enough lubrication.		according to directions.
	4.	Blocked air inlet screen (if	4.	Clean air inlet screen of buildup.
		equipped).
	5.	Air leaking from loose housing,	5.	Make sure housing is properly assembled
		hose or connections.		and tight. Repair hose/connection air leaks.
	6.	Mechanism contaminated.	6.	Have qualified technician clean and lubricate
				mechanism. Install in-line filter in air supply
				as stated in Initial Set Up: Air Supply.
	7.	Vane wear or damage.	7.	Replace all vanes.
Housing heats	1.	Incorrect lubrication or not	1.	Lubricate using air tool oil and grease
during use.		enough lubrication.		according to directions.
	2.	Worn parts.	2.	Have qualified technician inspect internal
				mechanism and replace parts 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 68128 For technical questions, please call 1-800-444-3353. Page 11