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Trouble
Low power
Motor will not run
Tool will not impact
Incorrect torque output
SAVE THESE INSTRUCTIONS. DO NOT DESTROY.
MAINTENANCE SECTION
TROUBLESHOOTING GUIDE
Probable Cause
Dirty Inlet Bushing or Air
Strainer Screen and/or Exhaust
Silencer
Worn or broken Vanes
Worn or broken Cylinder and/or
scored End Plates
Dirty motor parts
Improper positioning of Reverse
Valve
Incorrect assembly of motor
Insufficient lubricant in the
impact mechanism
Broken or worn impact
mechanism parts
Impact mechanism not
assembled correctly
Incorrect Torsion Bar adjustment Readjust adjustable Torsion Bar as instructed.
or wrong non–adjustable Bar
Improper Trip Valve adjustment
42
Solution
Using a clean, suitable, cleaning solution, in a well
ventilated area, clean Air Strainer Screen, Inlet
Bushing and Exhaust Silencer.
Replace complete set of Vanes.
Examine Cylinder and replace it if it is worn or
broken or if bore is scored or wavy. Replace End
Plates if they are scored.
Disassemble tool and clean all parts with a
suitable cleaning solution, in a well–ventilated
area. Reassemble tool as instructed in this manu-
al.
Make certain that Reverse Valve is fully
engaged to the left or right.
Disassemble motor and replace worn or broken
parts and reassemble as instructed.
Remove Hammer Case Assembly and lubricate
impact mechanism.
Remove Hammer Case and examine impact
mechanism parts. Replace any worn or broken
parts.
Refer to Assembly of the Impact Mechanism.
Install correct non–adjustable Bar.
Adjust Trip Valve as instructed.
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