Vaz 21213, Руководство по ремонту, Страница: 197 / 222

When refitting to the engine, the tensioner should be free
from oil, dowel 4 should not protrude from the housing.
Cooling system
The cooling system features two electric fans 14 (Fig.9-13).
The fan cowl is mounted in front of the radiator and is held by two
top 12 and two bottom 15 nuts.
The introduction of the throttle housing in the cooling system
has necessitated its heating-up by delivery of coolant via hose 8
from the cylinder head return pipe. The coolant is returned
through hose 5 which connects the throttle housing to the heater
matrix return pipe.
The cooling fan motor is operated by the electronic control
unit, so there is no fan blower «cut-in» sensor.
Fuel system
The fuel system is within the Engine Management System
(EMS) which is described in detail in a separate Repair and
Service Manual for EMS, Sequential Fuel Injection, therefore this
section describes only removal, refitting and replacement of the
air cleaner filter element.
The air filter is mounted at the front right-hand side of the
engine bay on three rubber mountings 11 (Fig.9-8).
Fresh air through air intake 5 and pipe 4 is drawn into air
cleaner housing 10. The air then flows through paper filter ele-
ment 9, MAF sensor 7, hose 6 and throttle housing 2. From the
throttle housing the warm air is directed to receiver unit 12 and
intake pipe and further to the cylinder head and cylinders.
Filter element - renewal
1. Undo four retaining bolts, remove air cleaner cover 8 com-
plete with MAF sensor 7 and intake pipe hose 6.
2. Renew filter element 9 so that its corrugation is parallel to
the vehicle axial line.
3. Refit and secure the air cleaner cover.
Crankcase ventilation system
Draught ventilation is provided to expel crankcase gases and
fuel vapours into the engine intake pipe.
Crankcase gases are drawn through hose 1 (Fig.9-14) into
the intake pipe hose and further via the throttle housing and
receiver unit into the intake pipe.
At low rpm and closed throttle, most of crankcase gases are
drawn along hose 2 to the throttle housing.
Flushing.
To flush the system disconnect vent hoses 1 and
2 from the intake pipe hose and throttle housing 3. Remove oil
separator 8 cover 5 and wash both units with petrol or kerosine.
Flush and blow with compressed air all hoses and connectors.
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Fig.9-14. Crankcase ventilation system:
1 - discharge hose; 2 - vent hose; 3 - throttle housing; 4 - oil dipstick; 5 - oil separator cover; 6 - oil pressure gauge; 7 - gasket; 8 - oil separator