- move handle 6 to the right to the full (pic. 8-33) control valve 17 of the heater and drain the liquid from the engine cooling system;
- disconnect «mass» battery wire;
- unscrew the fastening screws, remove the instrument panel shelf and the radio receiver panel, disconnect the electrical wires;
- loosen the clamps and disconnect from the pipes 16 of the heater rubber hoses for supplying and discharging liquid;
- unscrew the two fastening bolts inside the engine compartment and remove the heater radiator pipe seal;
- loosen the bolt of the bracket for fastening the sheath of the flexible rod on the crane and remove the rod from the crane;
- remove the heater fan motor switch and disconnect the wires from it;
- remove four spring holders and casing 18 of the fan assembly with the electric fan;
- remove the instrument panel shield, through the opening for it in the panel, loosen on the bracket 7 the screws of the brackets of the flexible rods of the cover 12 of the air intake and damper 3 of the windshield heating air duct. Remove the rods from the control levers;
- unscrew the nuts securing the radiator casing 15 to the air intake box 14, disconnect «mass» wire fixed under one of the nuts, remove the casing and air intake box.
Install the heater in the reverse order. Pay attention to the correct position of the sealing gasket between the radiator casing and the body, to the reliability of tightening the clamps of the rubber hoses.
After installing and connecting the hoses, fill the engine cooling system with liquid and check the tightness of the connections.
Pic. 8-33. Heater:
1 - air distribution cover; 2 - air distribution cover lever; 3 - damper of the air duct for heating the windshield; 4 - control handle for the windshield heating damper; 5 - air intake cover control handle; 6 - crane control handle; 7 - bracket for control levers; 8 - flexible traction; 9 - body ventilation air duct; 10 - air duct for heating the side glass; 11 - windshield heating air duct; 12 - air intake cover; 13 - air inlet box seal; 14 - air supply box; 15 - radiator; 16 - inlet and outlet pipes; 17 - crane; 18 - fan casing; 19 - spring clip; 20 - fan motor.