DV11
Operation and Maintenance
198
Maintenance of Major Components
Printed in Mar. 2005 PS-MMA0608-E1A
z Knocking out dirt by hand
- In emergencies, when no
compressed air or cleaning agent
is available, it is possible to clean
the filter cartridge provisionally by
hitting the end disk of the cartridge
with the ball of one's thumb.
- Under no circumstances should
the element be hit with a hard
object or knocked against a hard
surface to loosen dirt deposits.
z Checking the air cleaner cartridge
- Before reinstalling the cartridge, it must be checked for damage e.g. to the paper
pleats and rubber gaskets, or for bulges and dents etc. in the metal jacket.
- Damaged cartridges should not be reused under any circumstances. In cases of
doubt, discard the cartridge and install a new one.
5.5. Belt
The tension of the belts should be checked after every 2,000 hours of operation.
(1) Change the belts if necessary
If in the case of a multiple belt drive, wear or differing tensions are found, always
replace the complete set of belts.
(2) Checking condition
Check belts for cracks, oil, overheating and wear
(3) Testing by hand
z Poly belt
Poly belt will be properly
tensioned if the deflection force
“F” is applied mid-way between
the belt’s tangent points with the
pulley.
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