2. Remove the dirty filter cartridge by inserting fingers in
the cartridge openings. Loosen all four corners of the
If oil is added to the axles, allow sufficient time for any
cartridge, one at a time, by pulling straight out.
excess oil to run out before installing the filler-level plug.
Under no circumstances should the differential be
3. Clean the moisture eliminator openings of all soot, oil
film, and any other objects that may have become
lodged in the openings. Inspect the inside of the air
cleaner housing for foreign material.
4. Inspect the dirty cartridge for soot or oil. If there is
soot inside the tubes, check for leaks in the engine
exhaust system. If the cartridge appears "oily", check for
fumes escaping from the crankcase breather. Excessive
oil mist shortens the life of the cartridge.
Troubleshooting at this point can appreciably lengthen
new cartridge life.
It is not recommended to clean and
reuse the filter cartridge.
Figure 4-5. Differential Oil Level Plug
expectancy of a paper cartridge will
CHECK MAIN TRANSMISSION OIL LEVEL
be only a fraction of the original
Clean the area around the filler-level plug, and remove
The oil in the main
transmission should be just up to the bottom of the
5. Inspect the air cleaner mounting bolts to be sure they
opening. Be sure the machine is level when checking the
are tight. Inspect the clamps and flexible hose to be sure
they are air tight and in good condition.
If oil is added to the transmission, allow sufficient time for
6. Install a new cartridge, hold the cartridge in the same
any excess oil to run out before installing the filler-level
manner as when removing it from the housing. Insert
plug. Do not overfill the transmission.
the clean cartridge into the housing; avoid hitting the
cartridge tubes against the sealing flange of the housing.
Since the air cleaner requires no separate
gaskets or seals, care must be taken when
inserting a new cartridge to insure a proper
seat within the housing. Firmly press all
edges and corners of the cartridge by hand
to effect a positive air seal against the
sealing flange in the housing. Under no
circumstances should the cartridge be
pounded or pressed in the center with a fist
to effect a seal.
7. Replace the moisture eliminator panel and tighten the
clamps by hand. Then turn the nuts an additional 1-1/2
to 2 turns with a small adjustable wrench. Do not
Figure 4-6. Main Transmission Oil Level Plug
CHECK AXLE OIL LEVEL
Remove the combined filler-level plug from the side of
the differential carrier to check the oil level of these units.
The oil should be just up to the bottom of the level
opening. Be sure the machine is level when checking