Zontes ZT350T-D, Руководство по обслуживанию

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112 / 152
The air compressor with poor drying or filtering effect may
blow dust, moisture or other debris into the main pump
housing that has been cleaned through the blower; high
vacuum can be used Vacuum cleaner. Before assembling the
piston assembly and spring, apply a small amount of DOT4
brake fluid, and do not apply other lubricating materials such
as lubricating oil, grease or anti-rust oil.
g. Apply an appropriate amount of high-vacuum silicone
grease to the outer end of the handle bolt and piston
assembly according to the previous requirements for
lubricating the movable part of the handle. Refer to the
disassembly steps to reinstall, and follow the previous steps
to add the newly opened brake fluid and perform the
exhaust operation. Note that the copper pad (3) needs to be
replaced with a new one to prevent leakage. After the
assembly is completed, it is necessary to confirm that the
brake has been restored before driving the vehicle.
Disassemble the rear disc brake main pump
The rear disc brake main pump and the front disc brake
main pump are mirrored and symmetrical. Please refer to the
steps for disassembling the front disc brake main pump for
disassembly.
Disassemble the front disc brake caliper
a. Use 14 # to loosen the oil pipe bolt without leakage.
Remove 2 M10 pieces with 8 # hexagonal socket × one point
five × 60 bolts (red circle). The standard torque of the bolts is
45~50N. m (4.6~5.1 kgf. m, 33~37 lbf. ft). Do not operate the
brake handle after removing the caliper.
b. Place the oil drain pan under the front disc brake
caliper. First remove the screw rubber cap (1), wear
waterproof gloves, and then remove the bolt (2) with 8 # box
wrench, remove the bolt (3) with 14 # box wrench, and
remove two copper washers (4).
c. Remove the brake pads according to the steps of
removing the brake pads
d. Front disc brake caliper disassembly
A dust blow gun can be used to blow in compressed air
from the oil pipe bolts to blow out the piston. Pay attention
to placing towels or other soft materials on the piston to
prevent damage caused by collision between the piston and
the caliper mounting plate; and the dust blow gun should be
kept away from the caliper body. If the distance is too close,
the piston may suddenly fly out and cause damage. Check
the piston and caliper cylinder for scratches, damage, pits,
etc. Check whether the pin is deformed.
Caution:
●Apply silicone grease to the surfaces of the two pins
indicated by the arrows.
●The oil seal and dust seal should be replaced with new ones
after disassembly. DOT4 brake fluid should be applied to the
oil seal and piston, and silicon grease should be applied to
the outer ring of the dust seal.
●Apply thread fastening glue to the thread of the caliper pin,
torque: 22N.m (2.2kgf.m, 16 lbf.ft).
●The torque of the air release nozzle: 7
～
9N.m (0.7
～
0.9kgf.m, 5
～
7 lbf.ft).
●The open end of the piston should face the caliper
mounting plate, and do not install it backwards.
●If there is slight rust on the surface of the piston, it can be
polished off with 2000 mesh fine sandpaper.
e. Refer to the disassembly procedure to restore all parts
and add new DOT4 brake fluid according to the procedure of
replacing the front disc brake brake fluid. Only after
confirming that the brake is restored can the vehicle be
driven.
Disassemble the rear disc brake caliper
a. Place an oil pan at the bottom of the caliper, wear
waterproof gloves and loosen the bolt
⑴
with a 12# sleeve,
remove the copper pad
⑵
, and remove the RC-HU oil pipe.
Refer to the steps for adding brake fluid to the main pump of
the rear disc brake. Remove the upper cover of the main
pump to accelerate the discharge of the brake fluid. Bolt
⑴
Standard torque: 32N.m (3.3kgf.m, 24 lbf.ft).
b. Use a 14# sleeve to remove the bolt (3). Standard
torque of bolt (3): 24N.m (2. 4kgf.m, 18 lbf.ft).