Action 19а. Replacing the basis filtering el -
ement of engine oil filter
(MTZ-900.3/920.3/950.3/952.3)
After each 250 hours of operation, replace the
paper filtering element (simultaneously with re -
placement of oil in the engine crankcase). To
do this, proceed as follows:
unscrew the prefabricated filter from the con-
necting branch (1) using a special wrench or
other means and turn out the nut (3);
remove the bottom (4) with the spacer (2)
and ring (10);
remove the valve (5), washer (6) and spring
(7);
press on the clamp (8), move it inside the cap
(9) by 3-4 mm and turn it to align the clamp
lugs with the cap outlet grooves;
remove the clamp, paper filtering element,
bypass valve (12) and spring (11) from the
cap;
wash the cap cavity and all the filter parts
with diesel fuel;
replace the filtering element, spacers (2) and
(10) and anti-drain valve (5) and re-
assemble the filter in the reverse order.
The torque for tightening the nut (3) – 30…40
N•m (3…4 kgf-m).
When mounting the prefabricated filter on the
connecting branch, grease the rubber gasket
(2) with motor oil and screw in the filter.
After touching the body by the gasket, turn the
filter additionally by ¾ of a turn. Install the filter
on the body with applying the force from the
hand only.
It is allowed to mount the non-
separable filter cartridges with anti-
drain and bypass valves instead of
the prefabricated filter with remova -
ble paper filtering element They
have the following overall dimen-
sions:
- diameter: 95…105 mm;
- height: 140…160 mm;
- pilot thread: 3/4˝ - 16UNF.
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