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4.4.10 Lube Oil Filter
The primary oil filter is located near the radiator fan
(see Figure 1-4).
1. After warming up the engine, stop engine, remove
drain plug fromoil reservoir anddrain enginelube oil.
2. Replace filters. Lightly oil gasket on filter before
installing.
3. Add lube oil (Refer to paragraph 1.10.f).
4. Warm up engine and check for leaks.
4.4.11 Engine Speed
The engine speed is electronically controlled. DO NOT
ATTEMPT TO ADJUST ENGINE SPEED.
4.4.12 Replacing the Engine Speed Sensor
1. Disconnect the plug to the sensor .
2. Remove the bolt securing the sensor to the housing.
3. Remove the sensor from the housing.
4. Clean the recess in the housing to ensure that the
sensor seats properly when re-installed.
5. Re-install by sensor , replace the securing bolt and
connect the plug to the sensor.
4.4.13 Engine Air Cleaner
a. Inspection
The d ry element or oil bath air cleaner should be
inspected regularly for leaks. A damaged air cleaner or
hose can s eriously affect the performance andlife of the
engine. The air cleaner is designed to effectively
remove contaminants from the air stream entering the
engine. An excessive ac cumulation of these
contaminants in the air cleaner will impair its operation.
Therefore, a service schedule must be set up and
followed.
1. Check all connections for mechanical tightness. Be
sure the air cleaner outlet pipe is not fractured.
2. In c ase ofleakage andif adjustment does notcorrect
the trouble, replace necessary parts or gaskets.
Swollen or distorted gaskets must always be
replaced.
b. Air Filter Indicator
The air filter indicator is mounted on the unit frame and
connected to the engine air intake. Its function is to
indicate when the air cleaner element requires
replacing. In operation: When a plugged air cleaner
decreases intake manifold pressure to 500 mm (20”)
WG, the indicator moves to the red line. The air cleaner
element should be replaced and the indicator reset by
pressing the reset button.
c. ServiceProcedure(DryElement)
1. Stop the engine, remove air c leaner and install a
new element. Refer to Figure 4-3.
5
4
2
1
1
3
1. Air Outlet
2. Air Cleaner Body
3. Air Inlet
4. Cap Clamp
5. Air Filter Indicator
Figure 4-3 Air Filter (Dry Element Type)
d. Service Procedure (Oil Type)
Inspect the oil cup (see Figure 4-4) at regular intervals.
Initially, inspect daily or as often as conditions require.
Never allow more than1/2 inch (12.7 mm) of dir tdeposit
in the c up. More than 1/2 inch accumulation could result
in oil and dirt carrying over into the engine, causing
accelerated engine wear. Heavily contaminated oil will
not allow the air cleaner to function properly.
CAUTION
Alwayscovertheengineinlettube whilethe
air cleaner is being serviced.
Stop the engine and remove the oil cup from the air
cleaner . Dispose of the oil in an environmentally safe
manner . Remove the inner cup from the oil cup and
clean both cups.
Reassemble and fill both oil cups to the indicated level
with oil specified in paragraph 1.10.f.