LeeBoy 685D - Air Filter; Radiator Coolant

Air Filter
Turbo-charged engines are especially demanding on air
lter performance. The operator should be continually
aware of the condition of the air lter system. Inspect
all components for damage, cracked hoses or loose
clamps. Replace the air lter every 250 service hours.
A lockable access panel is located at the top of the right
side for convenient access to the air lter. (Figure 5-11)
NEVER operate machine without air
lter to prevent destruction of the engine.
Air Filter
Lockable
Cover
Figure 5-11. Air Filter
1 - Pre-Cleaner
2 - Indicator
Be sure to clean the inside of the air
cleaner body before replacing the air lter element.
Be careful not to introduce any contaminants into the
engine intake tube.
To replace the air lter:
1. Open clamps securing the cover on the lter
housing, then remove the cover.
2. Remove the lter cartridge.
3. Replace with the new lter cartridge.
4. Reinstall cover and secure with the clamps.
5. Reset the lter indicator by pressing button on top of
the indicator. (Figure 5-12)
Radiator
Cap
Figure 5-13. Engine Radiator Surge Tank Fill Cap
Radiator Coolant
Ensure the radiator is full and that no debris is present
that could block the system and cause overheating.
(Compressed air can be used to remove any debris
from the radiator.) You can access the radiator surge
tank ll cap via a lockable access door on top of the left
rear side of the grader. (Figure 5-13) When the engine
is cold, the coolant level should be visible in sight glass
through left side of the engine cover. If low, ll with a
solution of 50 percent water and 50 percent ethylene-
glycol antifreeze. Flush the radiator system every 500
service hours (see your Engine Operator Manual for
more information).
DO NOT remove the radiator surge
tank cap while the engine is still hot. The radiator is
under pressure and the hot water can cause serious
injury.
A restriction indicator is
mounted on other side of
the air lter that should be
checked often, accessed
via the left engine panel.
(Figure 5-12) As the
air lter becomes more
clogged, the air pressure
increases, causing the
indicator to reect the red
zone. If the red indicator
is visible, the air cleaner
element must be replaced.
Figure 5-12. Air Filter
Indicator
5
Maintenance
LeeBoy 685D Motor Grader 5-15