Geely Diagnosis Flow. Manual part - 66
Geely Diagnosis Flow. Manual part - 66
261
11
Tire bead
prized up
Tire fabric and tire
bead slip off; if
severe, steel wire
could be seen.
Incorrect assembling: damage tire bead during
assembling.
Apply lubricating oil
while assembling,
and avoid barbaric
behaviors
12
Tire bead’s
steel wire
cracked,
blown up
Steel wire cracked in
order, and those at
cracks having its
radius reduced.
Use improper hub or tire seat. Rim is not effectively
lubricated. When assembling, tire bead is not fully closed
with rim. To complete assembling, charge too high
pressure, causing high shear force locally at tire bead,
making its steel wire broken in order, and tearing the tire
sidewall, even causing severe accidents.
Lubricate
effectively, and
avoid charging too
high pressure and
forced assembly
13
Worn and
damaged
Tire casing deformed,
tire cavity with high
temperature
scorching, and tire
sidewall
circumferentially
While driving under insufficient pressure or pressure
loss, causing contact surface of the tire too large, and
unusual heating, and also causing reduced tire
performance and rolling, till blown up; if severe,
accidents may occur.
Keep normal
pressure
With obvious rolling
traces and
scorification of cord
thread; if severe, cord
thread and tire casing
rolled and cracked.
14
Unusual
abrasion
(one side at
shoulder)
Pattern of one side of
tire crown is
circumferentially
worn too quickly than
other parts
A. Toe-in too large or positive camber angle too large,
and tire shoulder of outer side is worn. B. Toe-in too large
or negative camber angle too large, and tire shoulder of
inner side is worn.
Correct toe-in or
camber angle
15
Unusual
abrasion
(local)
Local pattern of tire
crown is
circumferentially
worn more quickly
than other parts
When emergency braking or braking locking, tire is
instantly abraded with road surface locally, causing local
abrasion too quick.
Avoid emergency
braking
16
Unusual
abrasion
Local pattern of tire
crown is worn as in
lumpy
Caused by driving habit of mechanical system (caster
angle too large, hub eccentric)
Check mechanical
system of the
vehicle, and avoid
rapid steering,
braking, startup
17
Unusual
abrasion
(two sides at
shoulder)
Pattern at two sides
of tire crown is
circumferentially
worn too quickly than
other parts
Driving under relatively low pressure
Check pressure
and use standard
pressure
262
No. 188 Causes analysis for common manufacturing defects of Geely
automobile tire
Serial
No.
Malfunctions
Malfunction
Causes
1
Bracing ply
separates
Tire casing not stabbed, but cord thread loosens with
tire casing.
1. Steel wire of bracing ply not well bound
with tire casing; ply separation may occur.
2. While driving at high-speed for long time
with low pressure, frictional force between
tire and road surface increases, and tire
crown unusually heats up, causing reduced
adhesive force among parts, and ply
separation may occur.
2
Joint slips off
Surface layer between tire sidewall rubber and
rubber cracked
Tire rubber and sidewall not well bound
during manufacturing.
3
Tire sidewall
loosening
Side bulged out; foreign substances inside while
dissecting.
Other substances mixed during
manufacturing
4
Inner loosening
Cord plies bulged out, loosened with tire casing.
1. Inner lining or cord plies and tire casing
ply not well bound during manufacturing.
2. While driving at high-speed for long time
with low pressure, frictional force between
tire and road surface increases, and tire
crown unusually heats up, causing reduced
adhesive force among parts, and ply
separation may occur.
263
Electrics
No. 189 CD-player disk boot malfunction (without MP3)
Malfunction Cause
Solution
Power source malfunction
Inspect +B and GND, which normal value shall be 10V to 14V.
When ACC and GND ignition switch locating at ACC or ON, the
voltage shall be 10V to 14V. If it indicates no powers supply, then
check whether the fuse is burnt or not, and replace it if necessary.
In common condition, GND and vehicle earth lead shall be
conducted.
CD inserted in wrong direction
Check if the disk is inserted in wrong direction, and correct it if
necessary.
Wrong CD format or too dirty
disk
Firstly inspect the disk format, and change disk if necessary. Then
check whether it contains dirt or scratch mark and replace it if
necessary.
CD not reset yet
Press RESET button to reset CD-player
Shock proof screw not
removed
Remove the shock proof screw on housing
The laser head is too dusty and dirty, which affect reading ability of
the lens. And it needs to be cleaned. Clean method: clean with
special disk.
The laser head of CD-player is
too dirty or aged and too high
resistance
Laser head ageing, this results low laser power. That is, the beam
from laser head can not focus correctly, which causes reading
ability reduction or losing. Replace CD-player assembly.
CD-player disk
Boot malfunction
Internal CD-player circuit
malfunction
Replace CD-player assembly.
264
CD-player disk boot failure (without MP3)
Using non-CD disk
Dust on CD laser head
Dirt on disk
Power source malfunction
CD-player not reset
CD inserts in wrong direction
Disk contains scrapes or deformation
abnormal
Shockproof screw not removed
Internal CD-player malfunction
Please use CD disk, rather than VCD,
DVD or PC disk etc.
Clean laser head
Clean disk
Inspect +B and GND, which normal value shall be 10V to 14V.
When ACC and GND ignition switch locating at ACC or ON, the
voltage shall be 10V to 14V. Inspect and replace the fuse.
Press RESET button to reset CD-player
Correct the disk direction
Replace disk
Remove the shockproof screw on
housing
Replace CD-player assembly
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Not removed
Abnormal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal