32
7. If the automobile was operated on extremely dusty roads,
as well as after fording and negotiation of natural road sections
and off-road sections covered with mud, wash the filter element
of the air cleaner or replace it.
SEASONAL MAINTENANCE
The seasonal maintenance is carried out twice a year (in the
spring and autumn) and, if possible, is combined with the next
maintenance according to Coupons of Servicing Book.
Before the Summer Season of Operation
1. Connect the air hose to the air cleaner union and set the
manifold heat control valve in the "summer" position.
2. Drain the fuel tanks.
3. Remove the heater and windshield wiper motors, check
the conditions of the commutator and brushes, wash and
lubricate the bearings.
4. Switch on the windshield wiper for 15-20 min; the blades
should be swung out of the way.
Before the Winter Season of Operation
1. Disconnect the air hose from the air cleaner union and set
the manifold heat control valve in the "winter" position.
2. Wash the fuel tanks and fuel filters.
3. Check coolant specific gravity in the engine cooling
system, and if required, fill up to normal.
4. Flush the cooling system once in three years or after 60 000
km of run, drain coolant and refill the cooling system with fresh
coolant.
5. Check the heating and body ventilation system for proper
functioning.
6. Check the shutters for proper functioning.
7. Flush or replace the air cleaner of the vacuum brake
booster.
8. Switch on the windshield wiper for 15-20 min; the blades
should be swung out of the way.
