MAINTENANCE
186E MM160 (6–94)
3Ć30
TO ADJUST DUST FILTER TO HOPPER
SEALING
1. Park the machine on a smooth, level
surface.
2. Turn off the machine and set the machine
parking brake.
FOR SAFETY: Before Leaving Or Servicing
Machine; Stop On Level Surface, Set Parking
Brake, And Turn Off Machine.
3. Lift the filter assembly.
4. Make sure stop bolt is making contact with
the filter assembly. If it is, continue with
step 5. If it is not, press the round vacuum
fan seal bracket back to allow the assembly
to contact the stop bolt.
B
A
C
03541
STOP BOLT
A. Stop Bolt
B. Hopper
C. Vacuum Fan Seal Bracket
5. Turn the filter stop bolt clockwise one-half
turn.
6. Close the filter assembly and check the
clearance between the filter cover and the
hopper. This can be done by placing a 1 in
(25 mm) wide strip of paper between the
filter cover and the hopper. When correctly
adjusted, the paper will be difficult to pull
out. The seal pressure should not be so
great that the hopper will not float. Push the
hopper down to check – it should be able to
go down and return to its original position.
DUST FILTER
The dust filter filters the air which is drawn up
from the main brush compartment by the vacuum
fan. It is located inside the dust filter
compartment. Shake the excess dust from the
filter daily and before emptying hopper. Inspect
and clean or replace the dust filter after every 100
hours of operation.
To clean the dust filter use one of the following
methods:
TAPPING – Tap the filter gently on a flat
surface with the dirty side down. Do not
damage the edges of the filter element or
the filter will not seat properly in the filter
frame.
AIR – Blow compressed air, 35 psi (240
kPa) maximum, through the dust filter
opposite the direction of the arrows. This
may be done with the filter in the machine.
Always wear eye protection when using
compressed air.
WATER – Soak the dust filter in a water and
mild detergent solution. Rinse the dust filter
until it is clean. The maximum water
pressure allowable is 40 psi (275 kPa). Air
dry the wet dust filter; do not use
compressed air.
NOTE: Be sure the dust filter is dry before
reinstalling it in the machine.
