Dongfeng EQ1030T47D-820. Manual - part 34

Brake System

BR-6

Brake Pedal and Pracket

Disassemble and assemble

1.Pedal bracket assy

2.Support shaft

3.Brake lamp switch assy

4.Return spring

5.Brake pedal

6.Rubber mat

7.Vaccum booster with brake master pump

Assembly

Check the following items of the pedal:

Whether the pedal is bent.

Whether the pin is damaged.

Whether the welding area is cracked.

Whether the pin head is cracked.

Brake System

BR-7

Adjustment

Check the free height from pedal to reinforced plate.

Free height    169~175 mm
Note:
The booster rod couldn't be in a pressed position when assembling the

booster head pin.

Adjust the pedal height if necessary.

Adjustment

1.Loosen the lock nut, turn on the booster rod to adjust the

pedal height, then tighten the nut.

Assure the pushing rod head end on the inner side of the

pushing board.

2.Loosen the lock nut to adjust the light switch clearance, and

then tighten the nut.

3.Check the pedal free travel.

Assure the brake light is off when releasing the pedal.

4.Check the height of the pedal when depressing it under the running of

the engine.

If the height is lower than the specified value, check the system

whether there is any leakage, or with air, or damage of the main pump,
etc.), and then conduct necessary repairs.

Brake System

BR-8

Brake Booster

Brake master pump  with vacuum booster

1.Oil reservoir assy

2.Front chamber oil pipe assy

3.Rear chamber oil pipe assy

4.Vacuum booster with brake master pump assy

5.Nylon pipe with one-way valve assy

Brake System

BR-9

Driving Inspection

Control check

Shut down the engine and depress the pedal for several

times for any travel change.

Press down the brake pedal, start the engine, if the pedal
slowly down a litle, it is nornal.

Sealing check

Start the engine for one or two minutes then shut off. Press
down the pedal for several times slowly, if the first time
pedal down more and both the second and third time down
less, the booster is normal.

Depress the pedal when the engine is running, and then shut
off the engine without releasing the pedal. If no distance
change after the pedal depressing for 30 seconds, it proves
that the booster is in good condition.

Booster disassembly

Note:：
Be careful not to let the liquid spray on the painted surface, it will destroy the painting film. If it does, clean

it right away with clean water.

Be careful not to bend the brake pipe when disassemble the booster.

Check

Check the rod length of output end

Provide 66.7kPa vacuum for the booster with high strength of vacuum pump.

Check the push rod length

Specified length:

10.0-10.25mm

Clearance between the rod and the master pump pis-

ton:

 0.1-0.5mm