IMPROVEMENT OF BRAKING PERFORMANCE
- In addition to the 10-inch single brake booster, the small and long stroke-type master cylinder is used to achieve the downsizing and secure the assist force.
- The installation of 16-inch ventilated disc brake on the front axle and 16-inch solid disc brake on the rear axle achieves the secure braking force and direct braking feeling.
IMPROVEMENT IN SAFETY
- The 4-wheel anti-lock brake system (4ABS) has been installed to prevent slippage resulting from the wheel lock and assure stable vehicle posture and driveability.
- Electronic control braking force distribution system (EBD) has been adopted to assure the maximum braking force independently of the passenger' position in the vehicle.
- X-type piping of brake lines have been adopted for the front and rear wheels.
- Audible wear indicator has been adopted to the front and rear brake pads to warn the driver of the wear limit.
Scheme 49
- Diagnostic function has been adopted to ABS for easier inspection.
- Brake fluid reservoir, master cylinder, and brake booster have been integrated for downsizing and better serviceability.
LUBRICANTS
| Item | Specified lubricant | Quantity |
|---|---|---|
| Brake fluid | DOT3 or DOT4 | Adequate |
| Master cylinder body, wheel cylinder body, piston cup, piston, piston seal | ||
| Guide pin, lock pin, pin boot, bushing | Repair kit grease (solid orange) | |
| Boot ring, piston boot | Repair kit grease (translucent red) |
LUBRICANTS SPECIFICATIONS
Hydraulic brakes are composed of the brake pedal, master cylinder, brake booster and disc brakes. Malfunctions such as insufficient braking power or the generation of noise may occur due to wear, damage or incorrect adjustment of these components.
Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure that you have exhausted most of the possible ways to find a basic brake system fault.
- Gather information from the customer.
- Verify that the condition described by the customer exists.
- Find the malfunction by following the symptom chart.
- Verify malfunction is eliminated.
BLEEDING
| CAUTION | Be sure to use the specified brand and type of brake fluid. Avoid mixing with other type of brake fluid. |
Brake fluid
Mitsubishi Genuine Diamond Queen Brake Fluid Super 4
BLEEDING OF MASTER CYLINDER
When removed the master cylinder assembly, bleed the master cylinder in the following procedure to make bleeding of the brake pipeline easier. (When no brake fluid is in the master cylinder)
Scheme 50
- Fill the brake fluid reservoir with the brake fluid.
- Depress and hold the brake pedal.
- Another operator closes the master cylinder outlets with his fingers.
- In this condition, release the brake pedal.
- Repeat Steps 2 to 4 for 3 or 4 times to fill the master cylinder with the brake fluid.
Scheme 51
- Perform the bleeding in the order shown in the figure.
MASTER CYLINDER FUNCTION CHECK
- Remove the reservoir cap.
- While watching the open reservoir from a distance of 50 cm (20 inches), have an assistant depress the brake pedal. If there was a stream of brake fluid rising from the reservoir, proceed to Step 3. If there was no stream of brake fluid rising from the reservoir, replace the master cylinder.
- While watching the open reservoir from a distance of 50 cm (20 inches), have the assistant release the brake pedal. If there was a small amount of air bubbles rising through the brake fluid, master cylinder function is normal. If there were no bubbles rising through the brake fluid, replace the master cylinder.
