Zontes ZT350T-D, Руководство по обслуживанию, Страница: 130 / 152

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Front wheel assembly exploded view
：
NO. Part name QTY Caution
1 Oil seal TC φ28×φ42×7 2
2 GB276 bearing 6004-2RS-C3 2 φ20×φ42×12
3 Sleeve 1
4 Tire pressure sensor 1 Bend toward the left.
5 ABS sensor gear
（
56T
）
1
6 265×5.0front brake disc 1
7 Non-standard bolt M8×25 5
25 N.m(2.5 kgf.m
，
18 lbf.ft)
8 GB12615 φ3.2×9 rivet (stainless steel) 5
Inspection and maintenance of front wheel assembly
：
Caution:
●This inspection should be completed by a qualified
maintenance organization.
●Do not press the brake handle after the front wheel is
disassembled
●Be careful not to damage the ABS coil when disassembling.
●The vehicle must be parked on a flat and stable ground or a
lifting platform
●It is forbidden to use a high-pressure water gun to flush
against the oil seal at close range.
1. Disc brake
1.1 The service life of the disc brake disc
Under normal circumstances, the replacement mileage of
the brake disc is about 40,000 kilometers. The replacement
mileage is not absolute. It needs to be determined according
to the owner's travel habits (whether you like sudden
braking), road conditions, maintenance intervals and other
factors, but if the following three conditions are reached If
any of them, they must be replaced.
a. Use a vernier caliper to measure the thickness of the
disc brake disc less than 4.mm (0.16 in).
b. Hang the front wheel in the air, observe from the front
that the disc brake disc swings when the front wheel rotates,
and the disc brake disc deformation is detected.
c. Touch the surface of the disc brake disc with your hands
to detect obvious pits, visually inspect for deep scratches and
grooves.
1.2 Disc brake Replacement method
a. Refer to "Replace the front wheel" Remove the front
wheel assembly.
b. Use 6# hex socket to remove 5 M8×25 bolts and remove
the damaged disc brake disc.
c. After reinstalling the new disc brake disc, use 6# inner
hexagon to tighten 5 M8×25 bolts. Torque: 25N.m (2.5 kgf.m,
18 lbf.ft).
d. Reinstall the front wheel assembly.
2. Front wheel oil seals and bearings
2.1 Service life of front wheel oil seals and
bearings
Under normal circumstances, the bearings and oil seals in
the front axles need to be inspected within 50,000
kilometers, but the bearings and oil seals in the front axles
need to be inspected according to the actual conditions of
the vehicle’s driving conditions and the size of the load. Into
the oil seal and bearing, the fine dust in the water will
accelerate the wear between the bearing and the oil seal. At
the same time, the mixed friction of water and grease
becomes an emulsion and loses the original lubricating effect.
This also shortens the service life between the oil seal and
the bearing. When the following conditions occur, the front
wheel oil seals and bearings should be checked in advance
a. Abnormal front wheel noise when riding.
b. When the direction bar shakes left and right when
riding.