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Lifan 620 - Check the Vacuum One-Way Valve; Check if There Is Brake Fluid Leakage Outside the Brake Master Pump; After the Engine Stops; Inspection of the Front Brake Gear

Lifan 620
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braking distance is changed.
Step down the pedal and start the engine. Note: The operation is normal if the pedal drops
slightly.
2. Check the vacuum one-way valve.
1) Glide the clip and disconnect the vacuum pipe.
2) Remove the vacuum one-way valve.
3) Check if the way from the booster to engine is ventilated.
4) Replace the vacuum one-way valve in case of a fault.
3. Check if there is brake fluid leakage outside the brake master pump.
4. After the engine stops, step down the pedal for times and keep brake force. Check if the pedal
falls and if there is pressure leakage inside the brake master pump. Replace the brake master
pump in case of a fault.
iv. Inspection of driving brake
1. Inspection of the front brake gear
(1) Removal
1) Remove the front wheel.
2) Discharge the brake fluid. Note: Do not splash the brake fluid on the paint, otherwise clean it
immediately.
3) Remove the front disc brake caliper.
Remove the connector bolts and washer from the front disc brake caliper, and then disconnect
the hose. See Fig. 2-50.
Fig. 2-50
Remove the 2 bolts after securing the sliding pin of the slave cylinder of front disc brake. See
Fig. 2-51.
Fig. 2-51
4) Remove the front brake pad suite.
Remove the 2 brake pads with silencer pads.
Remove No.1 and No. 2 silencer pads from each brake pad.
5) Remove the front brake pad holding piece. Remove the 2 lining pads from the support of the
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