Harbor Freight Tools 94944 Troubleshooting, How to add grease to the gears, Problem Cause Action

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How to add grease to the gears

Every 100 hours of use it is recommended that you add wheel bearing grease to the gears. To get access to the gears, you must remove Crank Case Cover (40) by removing the six machine screws (37). Next rub wheel bearing grease on all the gears in the chamber. Replace the Crank Case Cover (40) using the same machine screws (37) that held it on. See the assembly diagram on page 17 to identify the parts.

TROUBLESHOOTING

Problem

Cause

Action

Motor doesn’t rotate

Disrupted power

Check power supply

when switched on.

Poor switch contact

Have switch repaired

 

Worn carbon brushes

Replace brushes

Overheated gearbox

Dull Drill Bit

Replace or sharpen the Drill Bit

 

Excessive use

Allow tool to cool down

 

Gears need grease

Add grease to the gears

NOTE: Other than changing or cleaning the carbon brushes, all other internal repairs should be done by a qualified service technician.

SKU 94944

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Contents Rotary Hammer Work Area Product SpecificationsGeneral Safety Rules Save this ManualPersonal Safety Electrical SafetyTool USE and Care Service GroundingGrounded Tools Tools with Three Prong Plugs Figure a Double Insulated Tools Tools with TWO Prong Plugs Extension Cords See Figure CSee Figure C, and Figure D Symbology Specific Safety RulesIndustrial applications must follow Osha requirements Unpacking Vibration HazardAssembly Instructions How to attach the chisels How to turn on the Rotary HammerOperating Instructions Chipping in a straight line Important Read before useUsing the Rotary Hammer as a hammer drill How to adjust the Masonry Drill 118 speedBreaking up concrete INSPECTION, MAINTENANCE, and Cleaning Troubleshooting How to add grease to the gearsProblem Cause Action Part Description Qty Parts ListSpeed Control Knob Assembly Diagram SKU