Harbor Freight Tools 68148 Cleaning, Troubleshooting, Problem Possible Causes Likely Solutions

2.Remove the Rubber Cap (53) and then slide out the Carbon Brush Holder (51B).

3.Remove the Brush Cap (52) from the Carbon Brush Holder.

4.Remove old Carbon Brush (51) from Carbon Brush Holder and insert new Carbon Brush into Carbon Brush Holder.

5.Replace Brush Cap and slide Carbon Brush Holder back into Housing. Replace Carbon Brush Cover.

6.WARNING! Verify all bolts and connectors are fastened tight.

Cleaning

1.Clean the Demolition Hammer with warm water, soap a soft cloth, preferably after each use.

2.WARNING! Do not use solvents when cleaning the Electric Hammer. Doing so can damaged the tool.

Troubleshooting

Problem		Possible Causes		Likely Solutions
Tool will not start.	1.	Cord not connected.	1.	Check that cord is plugged in.
	2.	No power at outlet.	2.	Check power at outlet. If outlet is unpowered,
				turn off tool and check circuit breaker. If breaker
				is tripped, make sure circuit is right capacity
				for tool and circuit has no other loads.
	3.	Tool’s thermal reset breaker	3.	Turn off tool and allow to cool.
		tripped (if equipped).		Press reset button on tool.
	4.	Internal damage or	4.	Have technician service tool.
		wear. (Carbon brushes or
		switch, for example.)
Tool operates slowly.	Extension cord too long or		Eliminate use of extension cord. If an extension
	wire size too small.		cord is needed, use shorter/heavier gauge cord.
			See Extension Cords in GROUNDING section.
Performance	1. Accessory dull or damaged.		1.	Keep cutting accessories sharp.
decreases over time.				Replace as needed.
	2.	Carbon brushes worn	2.	Have qualified technician replace brushes.
		or damaged.
Excessive noise	Internal damage or wear. (Carbon		Have technician service tool.
or rattling.	brushes or bearings, for example.)
Overheating.	1.	Forcing tool to work too fast.	1.	Allow tool to work at its own rate.
	2.	Accessory misaligned.	2.	Check and correct accessory to
				fence and/or table alignment.
	3.	Accessory dull or damaged.	3.	Keep cutting accessories sharp.
				Replace as needed.
	4.	Blocked motor housing vents.	4.	Wear ANSI-approved safety goggles and NIOSH-
				approved dust mask/respirator while blowing
				dust out of motor using compressed air.
	5.	Motor being strained by long or	5.	Eliminate use of extension cord. If an
		small diameter extension cord.		extension cord is needed, use one with the
				proper diameter for its length and load. See
				Extension Cords in GROUNDING section.

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

SKU 68148 For technical questions, please call 1-800-444-3353. Page 11