Dynapac CC1250, Instruction Manual

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Air Cleaner Main Filter 5. Make sure the main filter washer are not
cracked or damaged. Replace if necessary.
The air cleaner is the dry type with two elements;
a main filter that is replaceable and can be
cleaned, and a backup filter that should only be
6. The backup filter should be replaced if the air
cleaner visual restriction indicator is red after
Maintenance 56
replaced and never cleaned.
Figure 7-2: Air Cleaner Elements
A Clips D Backup filter
B Cover E Filter housing
C Main filter F Dust valve
When the visual restriction indicator is red, clean
and replace the air cleaner elements. The
following maintenance procedure must be
followed.
1. Unclip the clamps holding the main filter.
2. Remove the washer. Carefully withdraw the
main filter.
3. Inspect the main filter indicator (safety
signal). If the indicator is red, replace the
main filter.
Note
Make sure new elements arrive
enclosed in plastic or in a protective
membrane. Do not install elements
that are unprotected. This is a dust
hazard.
Note
Never attempt to clean a backup filter.
Change the backup filter whenever
main filter replaced.
4. Examine the new or newly cleaned main filter
for torn or damaged pleats, bent end covers,
liners, and gaskets.
servicing the main filter.
7. Clean the inside of the air cleaner housing
before removing backup filter.
8. To replace the backup filter, remove the old
filter from the holder. Dispose of the used
element properly.
9. Install new backup filter into the holder.
10. Carefully install the cleaned or new main
filter.
Figure 7-3: Air Filter
A Backup filter
11. Re-install the back cover, make sure the dust
valve is positioned downwards.
12. Inspect all air intake piping and joints
between the air cleaner and inspect the air
inlet to make sure that no dusty air can enter.
After servicing the elements, reset the restriction
indicator to green when the element is replaced in
the air cleaner housing.
Note
Never leave the air cleaner open
longer than necessary.
Note
The two most common servicing
problems are over servicing and
improper servicing.