INSPECTION OF PARKING BRAKE: Pull the parking brake lever at the grip center by 20+/-0.5 kg force, with this force the travel should not exceed 4th notch position. Check both the wheel are locked at this condition and release the lever (i.e. take it to home position, Zeroth Notch) and check for free rolling of the wheels. For counting the notches easily, listen to the click sound from the ratchet while pulling the parking brake lever without pressing the button. one clicks sound pertaining to one notch movement. C. BRAKE TROUBLE SHOOTING Before starting to “Brake” trouble shooting, inspect the vehicle brake hydraulic system and brake system components. It is strongly recommended to inspect the following before the actual road test. Apply and hold the brakes. Check for brake • fluid leakages at all connections and correct as necessary. Repeatedly apply and release the brakes to • observe brake shoe motion. If either brake is slow to respond, investigate for binding and/or airlock restriction. Brake fluid level in the reservoir / connector • Brake pads / Brake shoes. • Brake Drum / Disc / Caliper • Brake system for corrosion, chafing and • damage from road stones (Visual Inspection) Brake lag • Ensure correct tyre pressure and check for tyre • wear. BRAKE FLUID LEAKS: Check the master cylinder fluid levels. An abnormally low level indicates a leak in the system. In such a case, check the entire brake system for leakage. The cause should be corrected and defective parts should be replaced. Note that a slight drop in the fluid level does result from normal wear of brake lining. CONTAMINATED BRAKE FLUID: Improper brake fluid or water ingress in the fluid may cause the brake fluid to boil or deterioration of the rubber components in the hydraulic system. If the piston cups/piston seals are swollen, then rubber parts have deteriorated. This deterioration may also be evidence of swollen wheel cylinder piston cups on the drum brake wheels. If deterioration of rubber is evident, disassemble all hydraulic parts and wash with alcohol. Dry these parts with compressed air before assembly to keep alcohol out of the system. Replace all rubber parts in the system including hoses. Also when working on the brake mechanisms, check for fluid on the linings. If excessive fluid is found, replace the linings. BRAKE_DIESEL 28
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