Porter-Cable 4634 - Manual (Page 12)

12
BRUSH INSPECTION (If applicable)
For your continued safety and electrical protection, brush inspection and
replacement on this tool should ONLY be performed by an AUTHORIZED
PORTER-CABLE SERVICE STATION or a PORTER-CABLE
•
DELTA FACTORY
SERVICE CENTER.
At approximately 100 hours of use, take or send your tool to your nearest
authorized Porter-Cable Service Station to be thoroughly cleaned and inspected.
Have worn parts replaced and lubricated with fresh lubricant. Have new brushes
installed, and test the tool for performance.
Any loss of power before the above maintenance check may indicate the need
for immediate servicing of your tool. DO NOT CONTINUE TO OPERATE TOOL
UNDER THIS CONDITION. If proper operating voltage is present, return your
tool to the service station for immediate service.
KEEP TOOL CLEAN
Periodically blow out all air passages with dry compressed air. All plastic parts
should be cleaned with a soft damp cloth. NEVER use solvents to clean plastic
parts. They could possibly dissolve or otherwise damage the material.
Wear ANSI Z87.1 safety glasses while using compressed air.
FAILURE TO START
Should your tool fail to start, check to make sure the prongs on the cord plug
are making good contact in the outlet. Also, check for blown fuses or open
circuit breakers in the line.
LUBRICATION
This tool has been lubricated with a sufficient amount of high grade lubricant for
the life of the unit under normal operating conditions. No further lubrication is
necessary.
NOTE: The clutch housing is attached to the power unit with left-hand threads.
Remove the depth-stop assembly from the clutch housing by pulling it straight
off. Remove the clutch housing by turning the clutch housing clockwise.
NOTE: Be careful not to lose the small spring that is in the end of the power unit
spindle shaft.
Note the condition of the 3-jaw clutch faces on the power unit and screwdriver
mechanism. If they are badly rounded where the angular face meets the top
surface (or appear otherwise worn or faulty), or if the clutch elements are not
securely held in place on their respective shafts by the snap rings, return the
entire tool to your AUTHORIZED PORTER-CABLE SERVICE STATION for
service.
If the jaws are not seriously worn and no other apparent faults show up in the
mechanism, clear the mechanism and all internal areas of chips or other foreign
material. Brush a thin coat of PORTER-CABLE gear lubricant on the clutch
elements and surrounding areas. Attach the screwdriver mechanism to the
power unit. Be sure the spring is in the spindle shaft.
NOTE: The housing threads are left-hand thread.