Subaru Impreza Manuals 2014 Impreza Owner's Manual | Page 407

11-18 Maintenance and service/Brake booster Check the fluid level monthly. Check the fluid level on the outside of the reservoir. Because this reservoir is used for both the brake and clutch systems and has chambers for each system, be sure to check the fluid level for the clutch system at the inboard side of the reservoir (shaded area in the illustration). If the fluid level is below “MIN”, add the recommended clutch fluid to “MAX”. Use only clutch fluid from a sealed container. & Recommended clutch fluid Refer to “Fluids” F12-7. CAUTION Never use different brands of clutch fluid together. Also, avoid mixing DOT 3 and DOT 4 brake fluids even if they are the same brand. Brake booster Brake pedal If the brake booster does not operate as described in the following, have it checked by your SUBARU dealer. 1. With the ignition switch in the “LOCK” (off) position, depress the brake pedal several times, applying the same pedal force each time. The distance the pedal travels should not vary. 2. With the brake pedal depressed, start the engine. The pedal should move slightly down to the floor. 3. With the brake pedal depressed, stop the engine and keep the pedal depressed for 30 seconds. The pedal height should not change. 4. Start the engine again and run for approximately one minute then turn it off. Depress the brake pedal several times to check the brake booster. The brake booster operates properly if the pedal stroke decreases with each depression. Check the brake pedal free play and reserve distance according to the maintenance schedule in the “Warranty and Maintenance Booklet”. & Checking the brake pedal free play 1) 0.02 – 0.08 in (0.5 – 2.0 mm) Turn the ignition switch to the “LOCK” (off) position and firmly depress the brake pedal several times. Lightly pull the brake pedal up with one finger to check the free play with a force of less than 2 lbf (10 N, 1 kgf). If the free play is not within proper specification, contact your SUBARU deal-