TAYO Zontes ZT125-M 2022, Maintenance Manual

Page: 142 / 188

142 / 188
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 5# inner hexagon to remove bolt ⑴ , and remove the
wire clamp. First use a 12# sleeve to loosen the disc brake oil
pipe bolt
⑷ , pay attention to loosen it and then tighten it
slightly to avoid leakage, otherwise it will be more difficult to
loosen this bolt later. Use 4# inner hexagon to remove 2
bolts (2) to remove the wheel speed sensor. Use a 14# sleeve
to remove the bolt (3). Standard torque of bolt
⑶ : 24N.m
(2.4kgf.m, 18 lbf.ft); Standard torque of bolt ⑷ : 32N.m
(3.3kgf.m, 24 lbf.ft).
b. After wearing waterproof gloves, loosen the bolt ⑷
with a 12# sleeve, and turn the caliper upside down so that
the head of the bolt
⑷ is facing down to drain the brake fluid
into the oil pan. Remove the bolt
⑷
and the copper pad
⑸
and then remove the FC-HU oil pipe. Refer to the brake fluid
steps to remove the upper cover of the front disc brake main
pump to speed up the discharge of brake fluid.
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.
1- Caliper mounting plate 2- Brake pad holder 3- Caliper pin
rubber cap 4- Piston 5-dust seal 6-oil seal 7-caliper pin 8-
bleed nozzle 9-bleed nozzle rubber cap 10-caliper housing
11-caliper mounting plate pin rubber cap 12-brake spring
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,