Section 7. Maintenance Procedures
Belarus 80.1/80.2/82.1/82.2/82
Р — Operation and Service Manual
89
FLUSHING THROUGH THE OIL PRE-
LIMINARY FILTER
After running-in and every 1000 hours of
operation wash the oil preliminary filter 1
(see Fig. 39) and blow through with
compressed air until all contaminants are
removed. To do this, first disconnect the
filter from the diesel-engine oil pipeline.
When reinstalling the filter in the oil pipe-
line, see to that that oil enters the pipe-
line in the same direction, as before filter
disconnection.
WASHING THE BREATHER FILTER
MEDIUM
Wash the breather filter medium in diesel
fuel every 1000 hours of diesel-engine
operation (during scheduled MS-3). To
do this, remove the breather body from
the tractor, take out the breather, wash
and blow through with compressed air.
Pour some motor oil into the breather
and refit it in place, by first allowing the
oil to run off.
Simultaneously with washing the breath-
er, wash the screen installed between
the oil filler neck and the cylinder block.
ADJUSTMENT OF THE CENTRIFUGE
DRAIN VALVE
With the diesel-engine running at rated
r.p.m. and water temperature of 95 °
С,
oil pressure should be 2.5-3.5 kgf/cm
2
(0.25-0.35 MPa). If the oil pressure (un-
der the conditions specified above) is be-
low 1.0 kgf/cm
2
(0.1 MPa), stop the die-
sel-engine, locate and remove the cause
of oil pressure drop. Readjust oil pres-
sure by tightening the drain valve spring
in the centrifugal oil filter (see Fig. 40),
with the threaded plug previously re-
moved.
Fig. 39
Fig. 40
MAINTENANCE SCHEDULES FOR
COOLING SYSTEM
When performing scheduled mainte-
nance services on the cooling system,
follow the recommendations below:
а) keep the coolant level in the upper
tank some 50
…60 mm below the top
end plane of the radiator filler neck
(at the same time, the coolant level
should not be lower than 100 mm
from the filler throat end-plane);
b) keep an eye on the coolant tempera-
ture. Should the temperature rise,
check the level of coolant in the tank
and tension of the fan belt;
