4
−
4
T-343
CAUTION
Do not underfill or overfill the oil bath cups.
Overfilling cups causes loss of capacity;
underfilling cups causes lack of filtering
efficiency.
1
2
3
4
5
6
1. Air Inlet Hood
2. Air Cleaner Body
3. Cap Clamp
4. Inner Oil Cup
5. Gasket
6. Oil Cup
Figure 4-4 Air Cleaner, Oil Bath
d. Air Cleaner Body Service
The air cleaner body should be inspected each time the
oil cup is serviced. If there is any sign of contaminant
buildup or plugging, the air cleaner body should be
removed and back flushed.
At least once a year, or at regular engine service
intervals, remove the entire air cleaner and perform the
following cleaning procedure:
1. Remove oil cup. Check and clean center tube.
WARNING
Do not use gasoline to clean air cleaner
parts.
2. Pump solvent through the air outlet with sufficient
force and volume to produce a hard, even stream out
of the bottom of the body assembly. Reverse flush
until all foreign material is removed.
4.4.13 Engine Crankcase Breather
The engine uses a closed type breather with the
breather line attached to the cylinder head cover (see
Figure 4-5). It is not necessary to disassemble valve
style elements for cleaning. However, the bleed hole
should be checked to ensure it is free of obstruction.
Check once a year or at every 3,000 hours maintenance
interval, whichever comes first.
1. Screw
2. Breather Cover
3. Bleed Hole
4. Breather Valve
5. Breather Tube
Figure 4-5 Engine Crankcase Breather
4.4.14 Intake Heater Test
a. Disconnect the lead from the heater terminal (
1
).
b. Measure the resistance between the heater positive
terminal (
1
) and the heater body (
2
).
c. If the resistance is infinity or significantly different
than the specification,
resistance (cold) 0.3 ohms
, re-
place the heater.
1. Positive Terminal
2. Heater Body
Figure 4-6 Intake Heater
4.4.15 Intake Heater Service
a. Remove harness connection from heater.
b. Remove intake transition mounting hardware.
c. Remove intake transition, heater and both gaskets.
d. Clean old gasket material off the transition and mani-
fold mounting services.
e. Install new heater with a new gasket on either side.
f. Assemble transition to heater and torque mounting
hardware (refer to the engine manual for torque val-
ues).
g. Reconnect harness to heater connection point.
h. Coat stud on heater with protective coating.
