Section G. Maintenance Belarus– 510/512 Operating manual
98
Maintenance No. 3 (MS-3) after
each 1,000 service hours
Perform the previous MS actions plus the
following operations:
Operation 30. Tightening torque of
engine head bolts
NOTE!
This operation must be only per-
formed on a warmed up engine.
Remove the rocker cover, cylinder head
cover and rocker axle assembly.
Using a torque spanner, check and tight-
en the cylinder head bolts in the order
shown in the figure on the right. Bolt
tightening torque must be 160 to 180 N•m
(16 to 18 kgf•m).
Operation 31. Engine fuel coarse filter
Wash the fuel coarse filter proceeding as
follows:
• Shut off the fuel tank valve.
• Unscrew the fastening bolts (1) of the
barrel (3) and remove the barrel.
• Unscrew the deflector with the mesh
(2) and remove the diffuser.
• Wash the deflector with the mesh, the
diffuser and filter barrel in diesel fuel.
• Assemble the filter parts in the re-
verse order.
• Fill the system with fuel.
Bleed the system and remove air from
fuel system as shown below (action
40).