MAINTENANCE CD3340B/YB4411
5-16
Published 04/07/2015 Control # 569-00
Check the Air Cleaner Restriction Indicator
The air cleaner is equipped with a filter restriction indicator
(Figure 5-25). The air cleaner element needs replacing if the
indicator’s colored piston has popped out and is visible when
the engine is running at high idle.
Removing Elements
NOTE: Service the air cleaner only with the engine shut
down. Dirt and debris can enter the engine and
cause damage if the engine is operated with the air
cleaner element removed.
1. Remove the housing cover.
2. Remove the element as gently as possible, until you get
it outside of the housing. Accidently bumping it while it is
still inside the housing means dropped dirt and dust that
may contaminate the clean side of the of the air cleaner
housing before the new filter element has a chance to do
its job.
3. Clean the inside of the housing carefully. Any dirt left
inside the housing could cause damage to the engine.
Use a clean, water-dampened cloth to wipe every
surface clean. Check it visually to make sure it is clean
before installing a new element.
4. Always clean the gasket sealing surfaces of the housing.
An improper gasket seal is one of the most common
causes of engine contamination. Make sure that all
hardened ridges are completely removed, both on the
bottom and top of the housing.
Inspecting the Element
1. Don’t be fooled by the appearance of the element, it
should look dirty.
2. Check the element for uneven dirt patterns. The dirty
element is a valuable clue to dust leakage or gasket
sealing problems. A dust trail or pattern on the element
clean side is a sign that the element was not firmly
sealed or that a dust leak exists. Make sure the cause of
the leak is identified and rectified before replacing the
element.
Installing the Element
1. Install the element over the opening in the housing and
slide it all the way in.
2. Make sure the gasket is seating evenly. If the gasket is
not seating evenly for a perfect seal, you won’t have
protection. Recheck to see if the sealing surface in the
housing is clean, or if the element is not the right model
number. It may be too short for the housing.
3. Install the air cleaner housing cover and clamps.
4. Reset the air cleaner restriction indicator by pushing in
the reset button (Figure 5-26).
Check the Tire Pressure
Check the air pressure in the crane’s four tires. Correct
pressure is 8.62 bar (125 psi). This pressure will differ from
the recommended tire pressure from the tire manufacture.
Also, check for broken studs, rim damage, loose nuts, cracks
and other tire damage.
FIGURE 5-25
Air Cleaner Restriction
Indicator - Typical
p0468
FIGURE 5-26
a0450
Reset Button
Reference Only
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