TAYO Zontes ZT125-M 2022, Maintenance Manual

Page: 141 / 188

141 / 188
Trouble shooting
Soft feeling from brake lever
a. The brake system oil circuit enters the air
b. Brake fluid leakage
c. The brake pads or brake discs have oil stains
d. Wear of brake caliper or disc drive main pump piston
seal ring
e. Brake pads or brake discs are worn
f. The disc brake caliper is oily
g. The main pump of the disc brake is oily
h. The disc brake caliper does not slide flexibly
i. Insufficient brake fluid
j. The brake oil circuit is not unblocked
k. Brake disc is twisted and deformed
l. Wear and stickiness of disc brake caliper piston
m. The piston of the disc brake main pump is worn and
sticky
Hard feeling from brake lever
a. The brake oil circuit is blocked
b. The piston of the disc brake caliper is worn and sticky
c. The piston of the disc brake main pump is worn and
sticky
d. The disc brake calipers cannot slide normally
e. Wear of brake caliper or disc drive main pump piston
seal
Disassemble the disc brake main pump
and calipers
Caution:
●The protective measur es and brake fluid hazards have been
explained before, so I won’t repeat them here.
●The two copper pads at the brake hoses of the
disassembled calipers and the main pump must be replaced
to avoid leakage. The surface of the disc brake oil pipe bolt
and the copper pad can be reused if there is no scratch.
●Disassembling the main pump and calipers requires high
hands-on ability, and it is recommended to be carried out by
professional personnel or maintenance organizations. The
replaced brake fluid should be recycled by a professional unit
and properly disposed of.
●The operator is responsible for the consequences caused by
manual disassembly or improper assembly, and is not within
the scope of the three guarantees.
●Operate in a dry, dust -less or dust-free environment.
Disassemble the front disc brake main pump
a. Remove the cover according to the steps in the removal
direction in the "Front Fork Assembly" of this manual.
b. Use a 12# sleeve to loosen the disc brake oil pipe bolt ⑴ ,
pay attention to loosen it and then tighten it slightly without
leakage, otherwise it will be more difficult to loosen this bolt
later. Grasp the mirror rod of the right rear view mirror, use
a 13# sleeve to remove the nut ④ , remove the small
washer ③ , spring ② , and large washer ① , and take off the
rear view mirror. When reassembling, make sure that the
small washer ③ is aligned with the side plane of the mirror
rod bolt.
c. After grasping the front brake main pump, remove the 2
bolts (2) with a 5# inner hexagon, and remove the right
auxiliary switch.
d. Tilt the front brake main pump so that the bolt ⑴ faces
upward, wear waterproof gloves and use a 12# sleeve to
remove the bolt
⑴ , remove the copper pad ⑶ , remove the
FMC-HU oil pipe, and remove the brake fluid in the main
pump. Pour out. Bolt
⑴
Standard torque: 32N.m (3.3kgf.m,
24 lbf.ft).
e. Refer to the steps of adding brake fluid to remove the
upper cover; refer to the steps of removing the brake switch
and brake handle to remove.
f. Disassemble the front disc brake main pump
“a”. is the oil window assembly that cannot be
disassembled unless necessary; “b” is the φ0.5 oil hole; “c” is
the φ3 pressure relief oil hole.
⑤Dust cap⑥ Retaining ring ⑦Piston assembly (⑦a outer
seal ring ⑦ b inner seal ring) ⑧ spring ⑨ main pump housing
Diesel or kerosene can be used to clean the brake fluid to
facilitate the next step of decomposition. If the oil hole is
blocked, use a dust blower or a small needle tool to clear it.
After decomposition, use a soft lint-free brush to clean up all
parts. It is not recommended to use a dust blower for drying.
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