MCi Crusader II 1989 Maintenance Manual page 316

Date
1-1-89
Page 9-8
MC-9 MAINTENANCE MANUAL
At each engine oil change the air cleaner should be in-
spected as follows:
1. Check for proper mounting of air cleaner assembly.
2. Check the air cleaner body for cracks and dents, and
ensure that the cover is fastened securely.
3. Check the air cleaner clamps at the inlet and outlet ports
to ensure that there are no air leaks.
AIR CLEANER REMOVAL/INSTALLATION
1.
Loosen the clamps at the air cleaner inlet and outlet ports
and disconnect the line from the air cleaner to the air filter
restriction indicator.
2. Support the bottom of the air cleaner so that it does not
drop when the mounting bands are loosened.
3. Remove the capscrews and nuts from the bands and
remove the air cleaner from 'the coach.
To install the air cleaner, reverse the removal procedure.
Ensure that all mounting hardware is fastened tightly and that
all air lines are properly connected. preventing the entry of dirt.
REPLACING THE FILTER ELEMENT
1. Remove the air cleaner assembly. as outlined
previously.
2. Remove the twelve nuts that secure the air cleaner cover
and remove the cover and filter element
3. Wipe the inside of the air cleaner body, as well as the
inlet and outlet ports,
with
a clean damp cloth.
4. Install the new element, ensuring that the open end of
the element is facing the inlet port on the air cleaner cover.
5.
Install the cover and tighten the twelve nuts to
7
ft. lbs . .±. 1 ft. lb. (95 Nm..:. 1.3 Nm). Follow the recommended
tightening sequence.
NOTE: Before installing the cover, check.
the condition of the gasket and replace if
necessary.
6. Install the air cleaner into the coach.
TROUBLESHOOTING
Short Element Life
Air cleaner inlet restricted. Ensure that no foreign material
is blocking inlet pipe.
Air filter element too small. Replace element with one of
correct size as per Parts Manual.
Dirty element. Replace.
Damaged or improperly calibrated restriction indicator.
Replace restriction indicator.
Airborne Contaminants Entering Engine
Damaged element. Check the element for dents before
installing. Never use an element which shows obvious signs of
damage.
Leaky gaskets. Before reassembly, ensure gaskets will
seal correctly. Look for dust trails which indicate leaky
gaskets. Replace any brittle or damaged gaskets.
Leaky air inlet. Examine air inlet for cracks or loose flange
joints.
Figure 9-8. Cover Nut Tightening Sequence.
GENERAL CAUTIONS
A. Never operate the vehicle without an element in the air
filter assembly.
8. Use only original equipment filter elements.
C. Whenever element has been removed from filter body,
clean inside of filter body
with
a clean, damp cfot_h.
D.
Do not ignore the warning given by the air restriction
indicator. To do so is to invite serious engine damage.
E. Store new eleme_nts'in a protected area free from dust and
damage.
F. Use the proper element when replacing element in filter.
G. Dirty elements should not be washed or reused.