Fig. 8.78. Coolant line of Mazda 3: 1 – Cooler tube No.1; 2 – cooler tube No.2; 3 – cooler tube No.3; 4 – cooler tube No.4; 5 – cooler hose (upper); 6 – cooler hose (lower)
Removal
Disconnect the negative cable from the battery.
Discharge the refrigerant.
Remove the power steering reservoir.
Remove the expansion tank of the cooling system
Remove the throttle cable.
Remove the power steering hose bracket.
Remove in the order shown in table. Do not allow oil to spill from the compressor.
Warning! If moisture or impurities enter the cooling circuit, the cooling capacity of the circuit will be reduced and abnormal noise will be heard. Always plug open fittings after removing any components of the cooling circuit to prevent moisture or impurities from entering the circuit.
Separation of the insulating joint
Fig. 8.79. Disconnection of pipes with an insulating joint
To disconnect pipes with an insulated joint, clamp the female side of the pipe with pliers or a similar tool, and then unscrew the connecting bolt or nut (Fig. 8.79).
Fig. 8.80. Installing a special device on a coupling with a spring lock
Install a special device on the coupling with a spring lock (Fig. 8.80).
Insert the protruding element of the special device into the holder until it stops, monitoring the position of the protruding element through the viewing window.
Use a special tool to disconnect the male pipe or hose from the female part by pulling on the male part of the pipe or hose.
Fig. 8.81. Disconnecting tubes
Caution! The male tube or hose can be easily disconnected from the female part by pulling it out while simultaneously pressing on the protruding element of the special device (Fig. 8.81).
Installation
Apply compressor grease to the o-rings and connect the tubes.
(Article is based on website data: Mazbook)
Tighten the connections.
Tighten the insulating joint connection bolt by hand.
Fig. 8.82. Connecting pipes with an insulating joint
To connect tubes with an insulated joint, clamp the female side of the tube with pliers or a similar tool, and then tighten the connecting bolt or nut with a torque wrench (Fig. 8.82).
Attach the male tube or hose by screwing it into the female part until the spring on the male tube is behind the socket of the female tube.
Perform operational tests of the cooling circuit.
Note: When replacing the male tube or hose, the indicator ring appearing after connection indicates that the connection is locked.