Harbor Freight Tools Demolitin Hammer 68148 - Manual (Page 11)

Page 11 For technical questions, please call 1‑800‑444‑3353. SKU 68148
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.
2. No power at outlet.
3. Tool’s thermal reset breaker
tripped (if equipped).
4. Internal damage or
wear. (Carbon brushes or
switch, for example.)
1. Check that cord is plugged in.
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. Turn off tool and allow to cool.
Press reset button on tool.
4. Have technician service tool.
Tool operates slowly. Extension cord too long or
wire size too small.
Eliminate use of extension cord. If an extension
cord is needed, use shorter/heavier gauge cord.
See Extension Cords in GROUNDING section.
Performance
decreases over time.
1. Accessory dull or damaged.
2. Carbon brushes worn
or damaged.
1. Keep cutting accessories sharp.
Replace as needed.
2. Have qualified technician replace brushes.
Excessive noise
or rattling.
Internal damage or wear. (Carbon
brushes or bearings, for example.)
Have technician service tool.
Overheating. 1. Forcing tool to work too fast.
2. Accessory misaligned.
3. Accessory dull or damaged.
4. Blocked motor housing vents.
5. Motor being strained by long or
small diameter extension cord.
1. Allow tool to work at its own rate.
2. Check and correct accessory to
fence and/or table alignment.
3. Keep cutting accessories sharp.
Replace as needed.
4. Wear ANSI-approved safety goggles and NIOSH-
approved dust mask/respirator while blowing
dust out of motor using compressed air.
5. Eliminate use of extension cord. If an
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.