BRAKES 35 12. SNAP TYPE BRAKE LIGHT SWITCH INSTALLATION PROCEDURE 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 NOTE: Before inspection, make sure that there is no air in the hydraulic system. Check air tightness a. Start and stop engine, after running for 1 to 2 minutes. b. 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. c. If pedal travel doesn’t change then air tightness is not obtained. Inspect vacuum lines and sealing parts and replace defective parts. d. Repeat the entire test after replacing defective parts. Check operation a. With engine 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. b. Start engine 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. Check air tightness under load a. Start engine. Depress brake pedal. Stop engine while holding the brake pedal in depressed condition. b. 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.
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