Zontes ZT350T-D, Руководство по обслуживанию, Страница: 61 / 152

61 / 152
mixing different hydraulic oils.D350 measure 497±5ml
(16.8±0.17 US oz, 17.5±0.18 lmp oz, 3.3±0.3 cu-in).
●After traveling on dusty or muddy roads, you should clean
up the foreign matter on the front fork tube (exposed
chrome-plated cylinder) in time to avoid scratching the dust
seal or oil seal and causing leakage; wipe it clean with a soft
cloth.
●Do not use a high-pressure water gun to directly flush
against the dust seal at close range.
●The vehicle should be parked in a ventilated and dry
environment without driving for a long time. A dark and
humid environment can easily cause the front fork tube to
rust and make other parts of the vehicle rust. Coastal areas
should have more frequent pre-maintenance damping than
inland areas. After wiping clean, spray a small amount of anti-
rust oil to prevent rust.
1. Check the appearance
a. After parking the vehicle firmly, let the front wheel hang
in the air, and turn the direction knob to observe whether
the front shock absorber is leaking; whether there are
scratches, pits, rust, etc. on the surface of the front fork tube.
Shallow scratches, small pits, and slight rust can be smoothed
with fine sandpaper of about 2000 mesh. Wipe clean the dust
or foreign objects in the dust-proof seal. If there has a dust
cover, it should be moved away before inspection.
b. Check whether the bottom tube is painted off; whether
the installation points of the front fender, the front wheel
hollow shaft and the front brake caliper are broken or
cracked. Check if there is any leakage at the bottom of the
bottom cylinder.
c. If there is a large amount of hydraulic oil attached to the
front fork tube, wipe it clean and observe after riding. If there
is no oil stain or slight oil stain, it is the hydraulic oil
accumulated during the assembly of the dust seal, and it can
be judged that the oil seal is not leaking. If there is a small
amount of oil stains or sludge mixture, remove the dust seal
and wipe clean the front fork tube and oil seal surface, first
compress the front shock absorber and then wipe clean and
then press; repeat the above operation 10 times. Observe
whether there is still on the front fork tube. If there is, the
front shock absorber leaking oil needs to be replaced with
the dust seal and oil seal. If not, it is a normal phenomenon
that a small amount of hydraulic oil has accumulated during
assembly.
d. Check whether there is any leakage at the bottom of the
bottom cylinder with the help of a mirror or mobile phone
lens. If there is a slight leakage, first check whether the bolts
are loose. The bolt torque here is 20
～
26N.m (2
～
2.7 kgf.m,
15
～
19 lbf). ft). If there is still leakage after tightening, the
gasket should be replaced.
2. Check the shock absorption performance
Pinch the front brake handle and press down forcefully.
After releasing it, it should be able to compress smoothly and
then return to normal. Repeat the operation several times to
check. If there is a block, the shock absorber needs to be
removed for investigation. If there is a collision with the front
wheel or a high-speed bump, check whether the shock
absorber is deformed. Check the shock absorption
performance according to the maintenance schedule. It is
necessary to prevent the vehicle from turning over during
operation.
3. Remove the front shock absorption
Remove the front shock absorber according to the steps of
removing the front shock absorber in the "Front Fork
Assembly" of this manual.
4. Correct the front fork tube
If the front wheel of the vehicle passes a hurdle at a high
speed or after a collision, check whether the front fork tube
is deformed. Take the left shock absorption as an example.
Use the end face of the front axle of the shock absorber
bottom tube and the end face of the front fender mounting
point to fix the shock absorber; or remove the front fork
tube. Use a dial indicator to detect the amount of
deformation in the axial direction of the front fork tube, and
rotate the front fork tube to measure different positions.