John Deere ET-3303-J - Manual (Page 14)

14 3 1/4-Inch Belt Sander Operator's Manual
MAINTENANCE AND INSPECTION:
CAUTION: BE SURE TO SWITCH POWER OFF
AND DISCONNECT THE PLUG
DURING MAINTENANCE AND
INSPECTION.
1. Inspecting the Sanding Belts:
If the sanding belt becomes loaded with debris or
dull, the efficiency will drop significantly. It may be
necessary to clean or replace the sanding belt
frequently, depending on the type of use.
2. Inspecting the mounting screws:
Regularly inspect all mounting screws and ensure
that they are properly tightened. Should any of the
screws be loose, retighten them immediately. Failure
to do so could result in serious hazard.
Maintenance and Inspection
OPERATION (CONTINUED):
DUST REMOVAL:
When an excessive amount of dust is deposited in the
dust bag, dust-collecting efficiency will sharply drop.
Remove dust from the bag when it is deposited up to
about 2/3 the bag capacity, where by dust collecting
efficiency (as well as working efficiency) will be ensured.
Remove dust from the bag as follows:
a. Loosen the support bar and remove the dust
bag.
b. The bag inlet can be opened by unzipping the
slide fastener.
Operation
(Fig. 6)
3. Inspecting the carbon brushes (Fig. 6):
The motor employes carbon brushes which are consumable parts. Since an
excessively worn carbon brush could result in motor trouble, replace the carbon brush
with a new one which has the same carbon brush No. shown in figure when it
becomes worn to or near the “wear limit”. In addition, always keep carbon brushes
clean and ensure that they slide freely within the brush holders.
4. Replacing a carbon brush:
Disassemble the brush cap with a minus-head screwdriver. The carbon brush can
then be easily removed.