SECTION IV
PREVENTIVE MAINTENANCE
the tire valves, and be sure each tire valve is equipped
CHECK AUXILIARY TRANSMISSION OIL LEVEL
with a valve cap.
Clean the area around the filler-level plug, and remove
The tire rims should be checked to be sure they are not
transmission should be just up to the bottom of the plug
bent, loose, cracked, or otherwise damaged. If any of
opening. Be sure the machine is level when checking
these conditions exist, the rim must be repaired or
the oil level.
replaced.
If oil is added to the auxiliary transmission, allow
When tire wear or damage occurs as a result of a
sufficient time for any excess oil to run out before
mechanical deficiency of the machine, such a deficiency
installing the filler-level plug.
Do not overfill the
should be corrected immediately.
transmission.
The tires should be inflated to the pressures shown in
Table 4-1, unless otherwise specified in the machine for
a specific application. The tires should be adjusted to
these pressures when the tires are cool. When the tires
are hot from running, the pressure gauge reading should
be approximately 15 psi (1 bar) higher due to heat
buildup.
TIRE SIZE
ON-HIGHWAY
OFF-HIGHWAY
11:00 X 20
75 psi (5 bars)
85 psi (5.8 bars)
12:00 X 20
80 psi (5.5 bars)
90 psi (6.2 bars)
Table 4-1. Tire Pressures
The wheel mounting nuts should be checked to be sure
they are tightened securely.
Figure 4-7. Auxiliary Transmission Oil Level Plug
CHECK AIR TANK SAFETY VALVE
CHECK TIRES
At least weekly, manually pull out the stem of the safety
Each week, check the tires for cuts, bruises, snags,
valve on the dry tank to insure that the valve is not
punctures, and abrasions.
These minor injuries if
sticking. If the stem cannot be pulled out, the safety
neglected will cause tire failures. If these injuries are
valve should be repaired or replaced.
spotted in time, they can be repaired, and the tires will
provide safer and more profitable service life. In addition
to checking the tires for damage, check the condition of
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