MTZ 1220.1/1220.3 K. Scheduled technical maintenance
K12
Direct air flow at an angle to the surface of
a filtering element. During servicing protect
filtering element from mechanical damage
and oiling.
When filtering element is stained or oiled,
and blowing off with air is not efficient, it
should be washed in solution of soap
paste OP-7 or OP-10 and water heated to
temperature of 40-50°
С
.
Solution is prepared at proportion 20
grams of paste per one liter of water. If
paste is not available, one may use solu-
tion of household detergent with the
same concentration.
To wash the element, put it in washing
solution for thirty minutes, then thoroughly
rinse it for 15 minutes in the same solu-
tion and them in pure water heated to
35...45°
С
, and dry up for 24 hours. Do not
use open flame and air with temperature
above +70°
С
for drying.
ATTENTION: do not blow off MFE with
exhaust gases and do not rinse it in diesel
fuel.
• make assembly of the air purifier in the
reverse order;
Note: Under dusty conditions check state
of MFE after each 20 hours of tractor op-
eration.
• put right-side lining grid in place.
Attention! After assembling the air purifier
check air tightness of all inlet duct connec-
tions. To this end start the diesel and at
medium crankshaft rotation speed shut air
purifier pipe. Diesel should quickly stop
functioning. Otherwise, find out and cor-
rect leakage.
Operation 12
а
. Check/adjust tension of the air conditioner compressor drive belt.
(If installed as an option instead of fan heater)
Check tension of the air conditioner compressor drive belt:
Tension of the air conditioner compressor drive belt (1) (see figure below) is deemed
normal if deflection of its branch from the engine crankshaft pulley to the compressor pul-
ley as measured in the middle point is 4 to 6 mm when a force of (39 ± 2.0) N is applied
perpendicularly to the middle part of the branch.
Check/adjust tension of the air conditioner compressor drive belt
Adjust tension of the air conditioner compressor drive belt:
Adjust tension of the belt (1) (see figures 3.4) by turning the compressor (2) around the ro-
tation axis A and tightening the threaded coupling (B) in the groove of the sector (C). After
adjustment, the belt deflection under a force of (39±2.0) N, applied perpendicularly to the
middle part of the branch, must be 4 to 6 mm.
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