Warning! Remember that the dust generated during operation of the brake mechanisms may contain asbestos, which is extremely harmful to human health. Never blow off dust with compressed air or inhale it - wear a protective mask or respirator when servicing the mechanisms. Never use gasoline or petroleum-based solvents to wipe brake system components - use only branded cleaning agents or methyl alcohol!
Note: The calipers of both brake mechanisms of one axle must be changed at the same time. Remember that at the Mitsubishi service stations you can always order reconditioned assemblies of brake calipers on an exchange basis.
Mirage and Galant models up to 1993.
Front wheel brakes
Removal
1. Loosen the front wheel nuts. Jack up the front of the vehicle and support it. Apply the parking brake/chock the wheels on the ground.
2. Remove the wheels.
3. To prevent the brake fluid level from dropping too low, remove the cap from the reservoir, cover the neck with plastic film and screw the cap back on.
4. The details of the support installation are shown in the illustration.
5. Disconnect the flexible brake hose first from the metal line, then from the caliper (use two wrenches when loosening the union nuts - see Section Removal and installation brake lines).
6. Remove the guide and locking pins of the caliper.
7. Remove the caliper assembly from the anchor bracket.
Installation
1. If the removed caliper is to be used further, wash it thoroughly in a special cleaning liquid - never use kerosene or other petroleum products to wash the brake mechanism components! Carefully check the condition of the caliper, replace it if necessary.
2. Install the caliper in its regular place and tighten the guide and locking bolts to the required force.
3. Connect the brake hose to the caliper - do not forget to replace the sealing washers and make sure that the hose is not twisted.
4. Bleed the appropriate brake circuit (see Section Bleeding the brake system).
5. Replace the wheels and lower the vehicle to the ground. Before operating the vehicle, make sure the brake system is functioning properly.
Rear wheel brakes
Removal
1. Disconnect the negative cable from the battery.
The article is reprinted from this source: MitsubishiMan.ru
Warning! If the car stereo system is equipped with a security code, make sure you have the correct combination to activate the audio system before disconnecting the battery!
2. Jack up the car and place it on supports.
3. Remove the rear wheels.
4. Release the parking brake.
5. Remove the retainer and disconnect the parking brake cable from the brake assembly to be serviced.
6. To prevent the brake fluid level from dropping too low, remove the cap from the reservoir, cover the neck with plastic film and screw the cap back on.
7. The details of the support installation are shown in the illustration.
8. On front wheel drive (FWD) models, remove the hollow union bolt and disconnect the flexible hose from the brake caliper.
9. On all-wheel drive (AWD) models, first disconnect the brake hose from the metal line, then from the caliper (use two wrenches when loosening the union nuts - see Section Removal and installation brake lines).
10. Remove the locking pin and remove the caliper from the anchor bracket.
Installation
1. On FWD models, connect the brake hose to the caliper - be sure to replace the sealing washers on the hollow bolt of the union nut. Secure the hose to the support bracket.
2. On AWD models, connect the hose to the caliper and tighten the union nut to the required torque (13÷17 Nm). Next, secure the hose to the support bracket and connect it to the steel tube - the required tightening torque of the union nut is again 13÷17 Nm.
3. Make sure that the flexible brake hose is not twisted during connection.
4. Install the caliper on the brake mechanism anchor bracket, ensuring that the locking groove is correctly aligned with the shoe protrusion.
5. After lubricating, screw in the locking pin and tighten it to the required torque (32 Nm).
6. Bleed the appropriate brake system circuit (see Section Bleeding the brake system).
7. Inspect hydraulic lines for signs of developing leaks.
8. Replace the wheels and lower the vehicle to the ground. Before operating the vehicle, make sure the brake system is functioning properly.
Diamante and Galant models since 1994.
Front and rear brake mechanisms
Note: Since the rear disc brakes on these models are not equipped with a parking brake drive, they are no different in design from the front ones and are considered together.
Removal
1. Jack up the car and place it on supports.
2. Remove the appropriate wheel.
3. Unscrew the hollow bolt of the union connector and disconnect the brake hose from the caliper. Connectors with union nuts are used to attach the hose, use two wrenches and disconnect the hose first from the metal line and only then from the caliper. Immediately plug the open end of the hydraulic line.
Attention! Try not to allow the fluid level in the master cylinder reservoir to drop too low, as this will entail the need to bleed the entire brake system.
 |  |
4. Unscrew the guide and locking bolts of the caliper and remove the latter from the brake mechanism anchor bracket.
 |  |
Installation
1. Lower the caliper onto the anchor bracket.
2. Screw in the guide and lock bolts and tighten them to the required torque (32 Nm).
3. Install/connect the flexible brake hose to the caliper (if equipped, do not forget to replace the sealing washers of the hollow bolt of the nipple connector). Make sure that the hose is not twisted.
4. Bleed the corresponding hydraulic circuit (see Section Bleeding the brake system).
5. Depress the foot brake pedal and check the system for signs of developing leaks.
6. Replace the wheels, lower the car to the ground. Tighten the wheel nuts to the required torque (120÷140 Nm).
7. Before operating the vehicle, make sure that the brake system is functioning properly.