Zontes ZT310T-M, Руководство по обслуживанию

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d. After wearing waterproof gloves, use a Phillips
screwdriver to remove the bolt
①
, and remove the
upper cover
②
, the cover
③
, and the sealing rubber
gasket
④
.
e. Use the brake fluid water content tester to measure
the water content, if it is more than 2%, all brake fluid
needs to be replaced; if it is less than or equal to 2%,
add newly opened DOT 4 brake fluid to the transparent
observation window of the front disc brake main pump
3/4 places. It is recommended that the water content
should be less than 1.5%. TOTAL HBF 4 (DOT 4) brake
fluid is added to this vehicle from the factory.
The above picture shows the brake fluid water content
tester. The picture comes from the Internet and the
copyright belongs to the author of the original picture.
Do not use it for other purposes.
f. Reassembly can only be done after the foreign
objects have been cleaned up.
2. Replace the brake fluid
Refer to the steps of adding brake fluid. If the
measured water content is greater than 2%, the brake
fluid needs to be replaced. This inspection should be
done every 5000 kilometers (3107 mile) or every 15
months. It is recommended to replace the brake fluid
every 2 years. If the brake fluid is not replaced for a long
time, flocs will form to block the oil pipe, the oil hole of
the main pump of the disc brake or the piston will
become stuck, which will cause the braking effect to
deteriorate or fail, which will affect driving safety.
2.1 Replace the front brake brake fluid
a. Wrap around the front brake main pump with oil-
resistant plastic film, as shown in the previous section.
b. Pull out the rubber cap of the vent nozzle
①
, and
put on 8# torx wrench. Use a 6mm (0.23 in) hose to fit
the vent
②
, being careful not to remove the torx
wrench.
c. Put the other end of the hose into the oil pot.
d. Remove the upper cover of the front brake main
pump referring to the previous step of adding brake fluid.
e. Rotate the 8# torx wrench with the right hand
counterclockwise to loosen the air nozzle, and with the
left hand, slowly and uniformly squeeze the front brake
handle to the end and keep it still. Lock the vent nozzle
clockwise and slowly loosen the handle. Pay close
attention to the liquid level of the front brake main pump.
When it is too low, add it in time to prevent air bubbles
from entering the brake hose. Repeat the previous steps
until the transparent and clean light yellow brake fluid
comes out.
f. Observe whether the liquid level of the main pump is
at 3/4 of the transparent inspection, if it is not necessary
to add or withdraw or discharge with a syringe.
g. After the brake fluid is replaced, unplug the 6mm
(0.23 in) hose; use a torque wrench to tighten the bleed
nozzle to the standard torque: 10N.m (1 kgf.m, 7 lbf.ft).