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DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV #4 (05/28/09) PAGE 40
MAINTENANCE/SERVICE
Maintenance/Service
PREVENTATIVE MAINTENANCE CHECK LIST.
Application: All Models.
The normal operation of the SURFACE GRINDER
produces extreme dirt and dust, along with levels of
random vibration. Before operating the SURFACE
GRINDER, the following service list should be
accomplished. This list is for reference only and is
not intended to be all inclusive. Other subject areas
can be added at the discretion of the owner(s)
and/or operator(s):
1) Check all fasteners for proper torque values. If a
fastener requires re-torquing, consult a torque
chart for proper value. Properly discard and
replace any worn fastener with a factory
approved, replacement part.
2) Check the V-belts for wear. Adjust or replace as
necessary. Check pulleys for wear
and proper
alignment. Many loose materials created as a
result of operating processes can be extremely
abrasive.
3) Keep the SURFACE GRINDER clean. Wash the
unit after each use. Keep loose materials from
accumulating around engine cooling fins.
Determine that the interior sections of the frame
are free of material build-ups. Such build-ups
can restrict the operating process and present a
potential safety hazard. Clean and remove any
material build-up from the SURFACE GRINDER
after each use.
4) Engine service life can be extended with proper
air cleaner ma
intenance. Consult the material
supplied by the engine manufacturer for specific
information.
5) Check for proper oil level. Always use clean,
high quality engine oil. Change oil as required.
Consult the material supplied by the engine
manufacturer for specific information
6) Remove material accumulations from the
exterior surfaces of the electric motor. The
electric motor is a totally enclosed, fan cooled
(TEFC) design. Keep the fan fins clear of
material accumulations to enhance airflow over
the motor exterior for cooling purposes.
DANGER
DO NOT PERFORM PREVENTATIVE
MAINTENANCE CHECKS WITH THE ENGINE OR
ELECTRIC MOTOR RUNNING. STOP THE
POWER SOURCE AND DISCONNECT THE
SPARK PLUG OR EXTENSION CORD BEFORE
PERFORMING ANY MAINTENANCE TO THE
SURFACE GRINDER. IF GASOLINE ENGINE
POWERED, RECONNECT THE SPARK PLUG
BEFORE RESTARTING THE ENGINE. IF
ELECTRIC MOTOR EQUIPPED, TURN THE
ON/OFF SWITCH TO THE OFF POSITION
BEFORE RECONNECTING THE EXTENSION
CORD. IMPROPER PROCEDURES CAN RESULT
IN PROPERTY DAMAGE AND/OR PERSONAL
INJURY.
CHECKING V-BELT TENSION AND ALIGNMENT.
Application: All Models.
Proper V-belt tension and alignment are essential for
smooth transmission of horsepower and extended
service life. Improper tension and alignment will
accelerate V-belt wear and contribute to decreased
productivity. The V-belt is tensioned at the factory
with the maximum recommended tension force.
Check the belt tension at least two times during the
first day of operation as there will normally be a
rapid decrease in belt tension until it has been run
in. Check the belt tension every eight hours of
operation thereafter and maintain tension within the
recommended range. The correct operating tension
for a V-belt drive is the lowest tension a
t which it will
not slip under peak load conditions.
Tools Required:
1 each, 16 inch minimum length straightedge.
1 each, 10 lbs minimum capacity, tension scale or
belt tension tool.
1) If the SURFACE GRINDER is powered by an
engine, disconnect the spark plug wire. If
powered by an electric motor, disconnect the
extension cord or SURFACE GRINDER from the
power source.
2) Position the SURFACE GRINDER on a suitable
work bench with the V-belts approximately at
waist level.