MAINTENANCE CD5520/YB5520 OPERATOR MANUAL
6-12 Published 07-06-2017, Control # 406-03
Checking the Air Cleaner Restriction Indicator
The air cleaner is equipped with a filter restriction indicator
(1) (Figure 6-22). The air cleaner element needs to be
replaced when the indicator is in the red.
To check the visual indicator the engine must be running.
Don’t remove the element for inspection. Such a check
always does more harm to your engine than the good your
inspection can do. Ridges of dirt on the gasket sealing
surface can drop on the clean filter side when the gasket is
released.
Removing the Element
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. Release the latch (2) to unlock the air cleaner cover.
2. Rotate the cover counterclockwise and remove.
3. Remove the primary element as gently as possible until
you get it outside of housing.
4. Remove the secondary element.
5. 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 new elements.
6. 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.
Installing the Element
1. Install the secondary element in the housing and slide it
all the way in.
2. Install the primary element and slide it all the way in.
3. Make sure the gasket is seating evenly. If you don’t feel
the gasket is 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 the right model
number. It may be too short for the housing.
4. Install the air cleaner housing cover.
5. Reset the air cleaner restriction indicator by pushing in
the reset button (Figure 6-22).
Checking Tire Pressure
Check the air pressure in the crane’s four tires. Correct
pressure is 828 kPa (120 psi).
Also, check for broken studs, rim damage, loose nuts, cracks
and other tire damage.
50 HOURS OF OPERATION
NOTE: You must read and understand the warnings and
basic safety rules, found in Safety Information,
page 2-1, before performing any operation or
maintenance procedures.
For additional engine maintenance guidelines, see the
engine manual furnished with this crane.
Clean the Air Cleaner Dust Cup
Squeeze the dust cup (3) (Figure 6-22) to remove any
accumulation of dust or debris.
Wire Rope Inspection
All wire ropes wear out eventually and lose work capability
throughout their service life. That’s why periodic inspections
are critical. SAE J959, Lifting Crane, Wire-Rope Strength
Factors, requires that a thorough inspection be performed
and recorded on the wire rope not less often than weekly
when the crane is in continuous service.
Inspection
NOTE: Always wear gloves when working with wire rope to
prevent hand injuries.
1. Wire Rope - Inspect for damage, rust or wear to the wire
rope. Keep a record of each inspection. Replace the
wire rope if any of the conditions in Figure 6-23 are
present.
2. Sheaves - Inspect sheaves for damage and/or wear.
The sheave grooves must be smooth and a little larger
than the wire rope. Use a sheave gauge to check the
Reference Only
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