Lifan 620. Manual - part 35

2) Install the oil seal of piston.   

 Smear the 

①

lithium base glycol grease on the new oil seal of the piston.   

 Insert the new oil seal into the brake 

②

slave cylinder.   

3) Install brake piston. 

 Smear the 

①

lithium base glycol grease on the brake piston.   

 Install the piston into the front disc brake slave cylinder.

②

 

Note:

 Do not forcibly spin the piston into the brake slave cylinder.   

4) Install the dustproof cover of brake slave cylinder.   

 Smear the 

①

lithium base glycol grease on the dustproof cover of the new brake slave cylinder, 

 

①

②

②

 

①

②

③

or grease.   
9) Install the front disc brake slave cylinder.   

 Install the front disc brake slav

①

e cylinder by 2 bolts. See Fig. 2-59. Tightening torque: 34N·m. 

 

图

 

Fig. 2-59 

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 Install the new washer and hose by 

②

joint bolt. Tightening torque: 30N·m. Note: Secure the hose 

tightly in the locking hole of the brake slave cylinder.   
10) Discharge the air in the brake slave cylinder. 
11) Discharge the air in the brake pipeline.   
12) Check if there is brake fluid leakage.   
13) Install the front wheel. Tightening torque: 103N·m. 
2. Inspection of rear brake gear 
Disassembly Diagram of rear brake gear components.   
See Fig. 2-60.   

 

①
disconnect the hose. See Fig. 2-61. 

 

Fig. 2-61 

142

 Dismantle the 2 bolts after securing the sliding pin of the slave cylinder of the rear disc brake. 

②
See Fig. 2-62. 

 

Fig. 2-62 

①

②

 

Fig. 2-64 

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10) Dismantle the air discharging bolt of the rear disc brake gear. 
11) Dismantle the piston of the rear brake slave cylinder.   

 Place a cloth or equivalent betw

①

een the slave cylinder and piston. 

 Blow out the piston from the brake slave cylinder by compressed air. See Fig. 2

②

-65. 

 

Fig. 2-65 

 Mark on the brake disc and wheel hub.

①

 

 Take off the brake disc.

②

 

6) Install brake disc. Note: Install it through the part with min thickness. 
7) Check the brake disc swaying.   

 Temporarily tighten the brake disc. Tightening torque: 103N·m.

①

 

 Measure the swaying of brake disc at 10mm away from the outer edge of brake disc by a dia

②

l 

indicator. See Fig. 2-68. Max: 0.05mm. 

144