Harbor Freight Tools 67697 Troubleshooting, Problem Possible Causes Likely Solutions

Troubleshooting

Problem		Possible Causes		Likely Solutions
Compressor builds	1.	Crankcase overfilled with oil or	1.	Drain oil and refill to proper level with recommended oil.
pressure too slowly		oil too thick.
	2.	Working environment too cold.	2.	Move unit to a warmer location. Check that recommended oil
				is in crankcase.
	3.	Loose fittings.	3.	Reduce air pressure, then check all fittings with a soap solution
				for air leaks and tighten as needed. Do not overtighten.
Compressor not	1.	Filter need cleaning/replacing.	1.	Check inlet and outlet filter. Clean and/or replace as needed.
building enough air	2.	Crankcase oil too thick.	2.	Drain oil and refill to proper level with recommended oil.
pressure	3.	Loose fittings.	3.	Reduce air pressure, then check all fittings with a soap solution
				for air leaks and tighten as needed. Do not overtighten.
High Oil	1.	Crankcase oil too thin.	1.	Drain oil and refill to proper level with recommended oil.
Consumption	2.	Unit not on level surface.	2.	Reposition unit on a level surface.
	3.	Crankcase vent clogged.	3.	Clean Crankcase vent.
Overheating	1.	Filter need cleaning/replacing.	1.	Check inlet and outlet filter. Clean and/or replace as needed.
	2.	Crankcase oil incorrect type	2.	Drain oil and refill to proper level with recommended oil.
		and/or thickness.
	3.	Crankcase oil level too low.	3.	Add oil to proper level, check for leaks.

4.Unusually dusty environment. 4. Clean and/or replace filter more often or move unit to cleaner environment.

Excessive noise	1.	Crankcase overfilled with oil	1.	Drain oil and refill to proper level with recommended oil.
		or oil is incorrect thickness or
		type.
	2.	Crankcase oil level too low.	2.	Add oil to proper level, check for leaks.
	3.	Loose or damaged belt guard.	3.	Replace belt guard.
	4.	Loose fittings.	4.	Reduce air pressure, then check all fittings with a soap solution
				for air leaks and tighten as needed. Do not overtighten.
	5.	Unit not on level surface.	5.	Reposition unit on a level surface.
Oil in discharge air	1.	Crankcase oil too thin or	1.	Drain oil and refill to proper level with recommended oil.
		crankcase overfilled with oil.
	2.	Crankcase vent clogged.	2.	Clean Crankcase vent.
Air leaks from pump	Loose fittings.		Reduce air pressure, then check all fittings with a soap solution for
or fittings			air leaks and tighten as needed. Do not overtighten.

Follow all safety precautions whenever diagnosing or servicing the compressor. Disconnect power supply before service.

SKU 67697 For technical questions, please call 1-800-444-3353. Page 13