Section G. Maintenance
Belarus – 90/92 Operating manual
94
Maintenance No.3 (M-3) after
every 1000 hours of operation
Perform operations of the previous
maintenance plus the following
operations:
Operation 30. Tightening torque of
cylinder head bolts
NOTE! Perform this operation only on
heated engine.
Remove rockers’ cover, cover of cylinder
head and rockers’ axle in assembly.
Using torque wrench, check and tighten
cylinder head bolts in sequence shown
in the figure to the right. Bolts’ torque
should be within 160... 180 N•m (16... 18
kgf•m).
Operation 31. Engine coarse fuel filter
Wash fuel coarse filter by performing the
following operations:
• Shut off fuel tank cock.
• Unscrew cup (3) fastening bolts (1)
and pull out the cup.
• Unscrew reflector with mesh (2) and
take off scatterer .
• Wash reflector with mesh, scatterer
and filter cup in diesel fuel.
• Assembly filter parts in reverse
order.
• Fill the system with fuel.
Bleed the system and remove air
from the fuel system, as shown below
(operation 40).
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