Removal and installation of the main components of the Chevrolet Niva air conditioning system

We remove the elements and parts of the air conditioning system for replacement, as well as for repair

Removing and installing the air conditioning compressor

We prepare the car for the task, disconnect the negative battery terminal

Release the refrigerant from the air conditioning system

Remove the engine mudguard and engine screen

Disconnect the wiring harness from the windshield washer motor

Remove the washer reservoir and set it aside

Compressor drive belt tension assembly: 1 - bolts for fastening the tension roller bracket; 2 - tension roller; 3 - bolt of the tension mechanism; 4 - compressor drive belt

We unscrew the bolts 1 (Fig. 1) fastening the tension roller bracket by three to four turns

Release the tension of the compressor drive belt by turning the bolt 3 and remove the belt 4 from the compressor pulley

Disconnect the ignition harness block from the compressor block

Fixation of pipelines on the compressor: 1 - compressor; 2 - low pressure pipeline; 3 - compressor flange mounting bolt; 4 - compressor flange; 5 - injection pipeline

Unscrew the bolt 3 (Fig. 2), remove the flange 4 of the compressor and disconnect pipelines 2 and 5 from the compressor

We install plugs on the hoses to prevent leakage of compressor oil

Removing the compressor: 1 - compressor mounting bolts; 2 - low pressure pipeline; 3 pipeline injection; 4 - compressor

We unscrew the three bolts 1 (Fig. 3) securing the compressor to the bracket and remove the compressor 4

Installation

We install the compressor on the engine bracket and fix it with three bolts 1 (Fig. 3), the tightening torque of the bolts is 20-24 Nm

Remove the plugs from the tubes and install new sealing rings lubricated with compressor oil

We install pipelines, the compressor flange on the compressor and tighten the flange fastening bolt. Bolt tightening torque 50 Nm

Install the drive belt on the compressor pulley

We tighten the belt by rotating the bolt 3 (Fig. 1), and tighten the bolts of the tension roller. Bolt tightening torque 20-24 Nm

Connect the plug connector of the ignition system to the compressor connector

Installing the washer reservoir and connecting the connector of the ignition harness to the washer pump

Installing the engine mudguard and screen.

Connect the negative terminal to the battery

We charge the air conditioning system with refrigerant, according to the documentation for service equipment

Removing and installing the condenser

We prepare the car and disconnect the negative battery terminal

Remove the air filter

Remove the radiator lining

Disconnect the wire block from the sound signal and remove the sound signal

Mounting the hoses to the power steering heat exchanger: 1 - low pressure drain hose; 2 - hydraulic booster heat exchanger tube; 3 - low pressure hose

Disconnect low pressure hose 3 (Fig. 4) and hose 1 from the power steering heat exchanger

Removing the condenser: 1 - condenser mounting bolts; 2 - capacitor; 3 - power steering heat exchanger; 4 condenser pipeline; 5 - injection pipeline

Remove the heat exchanger 3 (Fig. 5) of the power steering

We pump out the refrigerant from the air conditioning system, according to the instructions for service equipment

Disconnect from the condenser the discharge pipeline 5, the condenser pipeline 4 and remove the condenser 2

Installing plugs on the tubes

Installing the capacitor

Installing and fixing the capacitor

Remove plugs from pipelines and condenser openings

We install new ones on the tubes O-rings lubricated with antifreeze oil

We fix the pipelines on the condenser. Tightening torque of the pipeline bolts 7-9 Nm

Installing and fixing the power steering heat exchanger

Connect the low pressure hose and the low pressure drain hose to the heat exchanger.

Add fluid to power steering

Install and fix the sound signal and connect the wires to it

Installing the air filter

Installing and fixing the radiator lining of the cooling system

Connect the negative battery terminal

Filling the air conditioning system with refrigerant.

Pumping the power steering system.

Replacing the condenser with an integrated receiver-drier, replacing the cartridge of the receiver-drier

We prepare the car and disconnect the negative battery terminal

Remove the bumper

Pull out the refrigerant from the air conditioning system

Removing the condenser with an integrated receiver-drier: 1 - tube from the condenser to the evaporator; 2 - injection tube; 3 - capacitor; 4 - capacitor mounting bolts

Disconnect tube 1 (Fig. 6) from the condenser to the evaporator and install plugs on the tubes and condenser

Removing tubes: 1 - nut for attaching tubes; 2 - pipeline from the compressor to the condenser; 3 - injection tube

Unscrew the nut 1 (Fig. 7) and remove the pipeline 2 from the compressor to the condenser

We unscrew the bolts 4 (Fig. 6) and remove the condenser 3 together with the injection tube 2

Removing the cartridge: 1 - plug; 2 - bolt; 3 - fixing plate; 4 cork

Remove the plug 1 (Fig. 8), unscrew the bolt 2 and take out the fixing plate 3

We screw a technological bolt into the cork until it stops, with a total length sufficient for gripping, with a thread similar to the thread of bolt 2

Use your hand to take out the plug 4 and take out the cartridge.

Installation

Installing a new cartridge

We insert the plug, having previously replaced the o-rings and lubricated them with compressor oil

Insert the fixing plate, tighten the bolt and install the plug

Installing and fixing the capacitor

We take out the plugs from the openings of the pipelines and the condenser

Install new O-rings lubricated with compressor oil

We fix the pipelines. Tightening torque of the nut and bolt for fastening pipelines 7-9 Nm

Filling the air conditioning system with refrigerant

Removing and installing the evaporator

We prepare the car and disconnect the negative battery terminal

Remove the engine mudguard

Draining the coolant from the engine cooling system

Disconnection of pipelines from the evaporator: 1 - pressure sensor; 2 - high pressure pipeline; 3 - low pressure pipeline

Disconnect the block of the ignition system harness from the pressure sensor 1 (Fig. 9)

Disconnect the hoses from the heater radiator pipes

Pull out the refrigerant from the air conditioning system

Disconnect low pressure pipeline 3 from the evaporator and pipeline 2 from the receiver

Installing caps on pipelines

Removing the heater

Remove the evaporator from the heater

Evaporator installation

Installing the heater

Remove the plugs from the openings of the pipelines and evaporator tubes

We install new O-rings lubricated with compressor oil on the tubes

We fix the pipelines on the evaporator. Tightening torque of the pipeline fastening nut from the receiver 15-17 Nm, tightening torque of the pipeline fastening nut from the compressor 24-27 Nm

Connect the hoses to the heater radiator pipes

Connect the plug of the ignition harness to the pressure sensor

Installing the skid plate and engine mudguard

Pour coolant into the engine cooling system

Connect the negative terminal to the battery

Filling the air conditioning system with refrigerant