Yaroslavl Engine Plant YMZ-536, Operation Manual, Page: 106 / 168

106
Through the

2mm hole
13
in the cover
12
atmospheric
pressure is applied onto the diaphragm. From below, on the crankcase
gases side the diaphragm
14
is spring-loaded by the cylindrical spring
15
.
The crankcase gases are removed via the circular slot between
the diaphragm and the central outlet pipe
16
.
When the turbocharger sucks from the engine an excessive
amount of crankcase gases, underpressure is created inside the engine
and the diaphragm 14 under the action of atmospheric pressure sits
down onto the central outlet pipe 16 thus closing it.
ATTENTION! THE CRANKCASE VENTILATION SYSTEM DOES
NOT REQUIRE MAINTENANCE AND
IS NOT MEANT TO BE
DISASSEMBLED.
BEFORE STARTING THE NEW OR REPAIRED
ENGINE, FILL THE 1
ST
STAGE HYDRAULIC LOCK
4
(VIEW B)
WITH 2 – 3 cm
3
OF THE ENGINE OIL USED IN THE ENGINE.