Section G. Maintenance
Belarus – 90/92 Operating manual
89
Operation 21. Checking air tightness
of air purifier and inlet duct
connections
• Remove mono cyclone (1) and clean
its inside surface.
• Loosen clamps (2), take off bolt (4),
release clamp (3) and remove air
purifier (5).
• Disassembly the air purifier, having
loosened nuts (7) and removed sump
(6).
• Clean inside sump cavity and fill
fresh motor oil.
• Pull out three filtering elements, wash
them in diesel fuel and blow them off
with compressed air. Clean central
pipe. Assembly the air purifier and
mount on the engine.
• Check air tightness of all connections
and, if necessary, tighten them. Engine
operating at medium crankshaft
rotation speed (1000 rpm) should stop
with air inlet pipe shut.
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