SNAP TYPE BRAKE LIGHT SWITCH 14. INSTALLATION 1. Adjuster (B) to be snapped on Brake light switch mounting bracket. 2. There should not be play in the adjuster after fitment with mounting bracket. 3. Insert the switch (A) in adjuster (B) till the switch plunger get completely Pressed against brake pedal ( at this point switch body will rest on brake pedal) 4. Rotate the switch in direction ‘C’ till its lock. 5. After locking the switch will set back by 1±0.15mm. INSPECTION OF BOOSTER OPERATION A. CHECK AIR TIGHTNESS 1. Start and stop vehicle, after running for 1 to 2 minutes. 2. Depress brake pedal several times with the same effort as used while normal braking operation and observe pedal travel. If pedal goes deep down for first time and its travel decreases for the following depression, then air tightness is observed. 3. If pedal travel doesn’t change then air tightness is not obtained. Inspect vacuum lines and sealing parts and replace defective parts. 4. Repeat the entire test after replacing defective parts. B. CHECK OPERATION 1. With vehicle stopped, depress pedal for several times with the same effort as used while normal braking operation and make sure that pedal travel doesn’t change. 2. Start vehicle and depress brake pedal. A small increase in pedal travel indicated satisfactory functioning of booster. But if there is no change in pedal travel, it indicates a malfunction. C. CHECK AIR TIGHTNESS UNDER LOAD 1. Start vehicle. Depress brake pedal. Stop vehicle while holding the brake pedal in depressed condition. 2. Hold the brake pedal in depressed condition for 30 seconds. If pedal height doesn’t change it indicates proper operating condition and if pedal travel rises it indicates malfunctioning. 3. After confirming assembly of brake pedal, booster fork and clevis pin joint, pull the brake pedal in upward direction then stop light switch need to be assembled. NOTE Before inspection, make sure that there is no air in the hydraulic system. BRAKE (MR) 34
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