Chevrolet New Sail (2010). Manual - part 26

 

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Important precautions: if the “click” sound of the 
regulator assembly cannot be heard from the two brake 
drums, then the clearance between the brake shoe and 
the brake drum has already been adjusted.     

z  Press the brake pedal at least 10 times, and confirm 

that the “click” sound of the regulator assembly 
cannot be heard in the two brake drums.     

z  For hand brake adjustment, please refer to "hand 

brake adjustment".     

 
 

 

5.12 The Wear-in Of Brake Shoes and Brake Drums   

z  Once a brake shoe is replaced, wear-in shall be carried out for the new braking surface.     

z  Once sizing is implemented or a brake drum is replaced, wear-in shall be carried out for the new braking 

surface.   

z  Brake 20 times at the speed of 48 km/h in order to carry out wear-in for the new braking surface.     

z  Step down the brake pedal with a varying force from moderate to heavy. Do not cause the brake to 

become overheated.     

Special precautions: Emergency brake should be avoided within 200 km driving distance after the brake 

lining is replaced.     

5.13 Hydraulic Braking System Exhaust   

1.  When the engine is stopped, continuously press the brake pedal several times until the reserved pressure in 

the booster is completely eliminated.     

2.  Disconnect the electrical connector of the Master Cylinder storage tank.     

3.  Dismount the Master Cylinder storage tank cover.     

4.  Connect the outlet valve to the Master Cylinder storage tank through an adapter.     

5.  Tighten and loosen the brake pressure control and air release valves respectively to carry out exhaustion for 

vehicles equipped with anti-lock braking system

（ABS）.   

6.  Fill the pressure exhaust device to 140-172 kpa 

（20-25 bar /square inch）.   

7.  Pour brake fluid into the Master Cylinder storage tank. During the exhaust process, the brake fluid in the 

Master Cylinder should be maintained as half-full.     

 

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Chevrolet 2010 New Sail New Technical Training 

- Learner's Manual

 

8.  Disconnect the front brake line of the Master Cylinder.     

9.  Pour brake fluid into the storage tank until brake fluid starts to spill from the front pipe head.     

10.  Connect the front brake line to the Master Cylinder, and fasten the brake line to 10 N.m 

（13 pound foot）.   

11.  Slowly press the pedal  and hold it.   

12.  Loosen the front brake line at the Master Cylinder, and release all air in the Master Cylinder.     

13.  Fasten the brake line 

（as stated in step 5）, and slowly release the brake pedal. Wait for 15 seconds, and then 

go to the next step.     

14.  Repeat this procedure and the 15 seconds waiting time until all air is exhausted from the master cylinder 

hole.   

15.  After all air is exhausted from the front joint, repeat the same procedure for front joint exhaustion to exhaust 

all air in the Master Cylinder from the rear joint. Important precautions: the following exhaust sequence 
should be followed for vehicles without an anti-lock braking system: right back, left front, left rear and right 
front.  

Important precautions: quickly pressing and releasing the brake pedal in a back and forth manner will 
cause the Master Cylinder sub-piston to be pressed down along the oil cylinder. This will result in the air in 
the system becoming harder to be exhausted.     

16.  Connect a hyaline tube to the air outlet valve of the right back brake wheel cylinder, and dip the tube into the 

brake fluid in the hyaline vessel.     

17.  Slowly press the pedal and hold it.     

18.  Unscrew the air outlet valve screw to exhaust the air in the pipeline.     

19.  Screw in the air outlet valve.     

20.  Slowly release the brake pedal. Wait for 15 seconds and repeat step 17 ~ 19.     

21.  When the exhausted brake fluid is free of bubbles, then screw in the exhaust screw. Fasten in the exhaust 

screw to 9 N.m 

（80 poundinch）.   

22.  Connect the hoses to the left front, left rear and right front brake air outlet valves, and carry out steps 17 ~ 21, 

respectively.   

23.  Wait for 15 seconds and repeat this procedure. Inspect the brake pedal to see if it is firm. If it is still soft, the 

 

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above procedures need to be repeated in order to exhaust all air.     

 

 

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Chevrolet 2010 New Sail New Technical Training 

- Learner's Manual

 

5.14 Hand Brake Adjustment   

1.  For the rear brake adjustment, please refer to "rear brake adjustment".     

2.  Release the hand brake.     

3.  Lift and properly support the vehicle.     

4.  Inspect whether the hand brake cable is free to move.     

5.  Turn the adjusting nut

（1）in the brake bar assembly until wheels are hard to move.     

6.  Unscrew the nut

（1）until the rear wheel is just able to be free to rotate.     

7.  Lower the vehicle.