Periodic Inspection
71
Maintenance of YANMAR Combine
harvester
Due to rotating and vibration of the machine, wear of
parts and changes in load and operating environment
during operation or transportation, its technical
conditions may be worsened, efficiency be reduced,
parts be damaged, or serious accidents be caused. To
prevent the accidents, the machine should be correctly
operated to extend its service life, all parts be checked
and cleaned, bolts be tightened and adjusted, or parts
be replaced when necessary. This is the so-called
maintenance.
<Content of daily maintenance>
1- Check and clean the air filter elements, the screen of
oil cooler & radiator and engine dust protector.
2- Check the amount of engine oil, radiator & sub water
tanks for leakage.
3- Clean the parts required to be cleaned (cleanouts of
1st and 2nd conveyers).
4- Remove straw stuck in and between the drive shaft
and driven shaft of chains, as well as chaff attached
on drive belts.
5- Lubricate all chains, remove mud and chaff on
cutters, check any damage in the chains and cutters,
and add lubricant in the gap between upper and
lower cutter blades. (Lubricate the chains and
cutters every 2 hours during operation)
6- Check whether the tension spring of chains is
loosened.
7- Remove chaff on the concave screen and swing
separator of the threshing section. In particular,
check the degree of wear on the concave screen
(high moisture content of crops), and replace it when
necessary.
8- Check the threshing tooth, mount reversely or
replace them if necessary.
9- Check the crawler tension, and tighten it if necessary.
Be sure to remove the mud, grass or straw
on/between the sprocket, rollers, crawler guide,
frame and transmission. Otherwise, the crawler may
hardly move, its power is reduced, and the
sprocket and crawler be subject to early wear.
10- Fill the fuel tank.
11- Check whether the engine and other parts are
under normal conditions.
12- Check whether the bolts and nuts are loosened.
[Precaution]
Protect electrical parts, the swing separator
and belts from water, or failures may be
caused.
Fuel without dirt is supplied.
● Check whether the engine is shut
down, control levers are in the “OFF”
position, and wait till are moving parts
are completely stopped before
inspection, maintenance and
adjustment. Otherwise, you may be
injured.
● Be sure to fix the safety lock of header
section before raising it for inspection,
maintenance and adjustment.
Otherwise, the header may fall down
quickly and cause injuries. Refer P37.
● Full ventilation should be provided
during inspection indoors. Otherwise,
you may be poisoned by exhaust gas
from the engine.
● When multiple maintenance
operations, take out the key from the
switch to ensure safety.
It is recommended that periodic inspection and
maintenance be performed in the slack season to
ensure full mechanical performance, safe and
comfortable operation in the busy season. Therefore,
safety of all parts should be ensured during inspection
and maintenance. In particular, the radiator of fuel
channel and other rubber tubing should be replaced
every 2 years, and the electrical wiring be checked on a
yearly basis, so as to maintain the machine under the
optimal working condition.
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