Launch TWC Series User manual

LAUNCH TyreChanger(TWCSeries)
i
TrademarkInformation
is aregistered trademark of LAUNCH
TECH. CO., LTD. (LAUNCH forshort) inChina and
other countries. All other LAUNCH trademarks,
service marks,domainnames, logos, andcompany
names referred to inthis manualare either
trademarks, registered trademarks, service marks,
domain names, logos, companynames ofor are
otherwise the property of LAUNCH or its affiliates. In
countries where any of the LAUNCH trademarks,
service marks, domain names, logos and company
names are not registered, LAUNCH claimsother
rights associated with unregistered trademarks,
service marks,domainnames, logos, andcompany
names. Other products or company names referred to
in this manual may be trademarks of their respective
owners. You may not useany trademark, service
mark, domain name, logo, or company name of
LAUNCH or any thirdparty without permission from
the owner of the applicable trademark, service mark,
domain name, logo, or company name. You may
contact LAUNCHby visitingLaunch at
http://www.cnlaunch.com, or writing toLAUNCH,
Xinyang Building, Bagua 4th Road, Shenzhen,
Guangdong Province, P.R. C., to request written
permission to use Materials on thismanual for
purposes or for all other questions relating to this
manual.
CopyrightInformation
Copyright 2000 by LAUNCH TECH. CO., LTD. All
rights reserved. No part of this publication may be
reproduced, stored in aretrieval system, or
transmitted in any form or by any means, electronic,
mechanical, photocopying, recording or otherwise,
without the prior written permission of LAUNCH. The
information containedhereinis designedonlyfor the
use of this unit. LAUNCH is notresponsible for any
use of this information as applied to other units.
Neither LAUNCH norits affiliates shall beliable to the
purchaser of this unit or third parties for damages,
losses, costs, or expenses incurred by purchaser or
third parties as aresult of: accident, misuse,or abuse
of this unit, or unauthorized modifications, repairs, or
alterations to this unit, or failure to strictly comply with
LAUNCH operating and maintenance instructions.
LAUNCH shall not beliable for anydamages or
problems arisingfrom the useof anyoptionsor any
consumable products other than those designated as
Original LAUNCH Products or LAUNCH Approved
Products by LAUNCH.
GeneralNotice
Otherproductnames usedhereinarefor
identification purposes onlyand may be
trademarks oftheirrespective owners.
LAUNCH disclaimsanyand all rightsin
those marks.

LAUNCH TyreChanger(TWCSeries)
ii
SafetyPrecautions
Attention
lThis manual is anecessary part of the product.
Please read carefully.
lKeep the manual forlater usewhen maintaining
the machine.
lThis machinecan onlybeused forthe
designated purposes. Never use itfor any
other purpose.
lThe manufacturer is not held responsible for the
damage incurred byimproper use or useother
than the intended purpose.
Precautions
lThe equipment can only be operated by qualified
personnel with special training. Modification to
any components orparts, or use the machine for
other purposewithout either obtainingthe
agreement from the producer,or observing the
requirement of the instructions may lead to direct
or indirect damage to the equipment.
lThe machine should beinstalled on the stable
ground.
lKeep the back panel 0.75M away from the wall
for good ventilation. Enough room should be left
on both sides of the machine forconvenient
operation.
lDo not put the machine in aplace with high
temperature or moisture, or near the heating
system, water tap, air-humidifier or chimney.
lDo not put themachine nearthe windowwith
sunlight. Protect the unit with acurtain or
shield if necessary.
lAvoid lots of dust,ammonia,alcohol, thinneror
spraying binder.
lPeople who are not operating the machines
should be kept away when it is used.
lUse appropriate equipment and tools,protective
and safety equipment, including eyeglasses,
earplugs and working boots.
lPay special attention tothe marks onthe
machine.
lDo not touch or approach the moving parts by
hand during operating.
lDo not removethe safetydevice orkeep itfrom
working properly.
lUse #2lithium lubricants(grease) only within the
safety range. Refer the appendixfor the safety
data.
lBefore moving thetyre changer,contact
maintenance personnel.

LAUNCH TyreChanger(TWCSeries)
iii
MAX10bar
²Caution should be taken
when separating the tyre
bead from rim. The bead
breaker shoe will move
rapidly and forcefully when
the pedal is depressed.
Keep hands andother parts
of body awayfrom moving
parts.
²If the clampingcylinderis
working when bead
breaking, to avoid
squeezing hands,
remember to keep hands
away from the sidewalk
of
tyre.
²High voltage power!
Danger!
²This is where the
compressed air gunis
connected with the air pipe.
Connect the compressed air
gun with the air connector.
²The pressure of the
compressed airshouldnot
exceed 10 bar.
Description ofSafetySigns
²Toprevent accidents from
occurring, make sureto
keep hands and other parts
of the body away from
moving parts when
fastening the mounting
head or whenthe turntable
is running.
²Be careful when connecting
and disconnecting air
source. Exhaust the air in
the cylinder completely
when maintaining the air
pipes to prevent accidents
from occurring.
²Don’tkeep hands or other
body parts between the
clamping jaw and clamping
rim.
²Pay attention tothe safety
regulations in the swinging
area of the tilting post to
avoid accidents from
happening.
²Before inflating check ifthe
clamping rim and the tyre
match each other,andif
they are in good condition.
Any negligencemay result
in fatal explosion. Similar
accident may occur if the
inflating air exceeds the
allowed tire pressure.

LAUNCH TyreChanger(TWCSeries)
iv
ThePositionofSafetySigns
Take TWC-502NICas example:
uPlease replace the safety signs if it gets blurred or lost.
uWhen one or more safety signsget lost, don’t operatethe machine.
uThe safety signs must be kept within the sight of the operator.

LAUNCH TyreChanger(TWCSeries)
v
TableofContents
GeneralInformation 1
RulestoNameTWCSeries….………….…1
Usage……………………………….……….…2
Features …………………………………...…..2
Technical Specifications………………………..2
ApplicableRange……………………...…..2
Working Conditions……………..………….2
MainStructure ... .. 3
Operation .. .. 4
General Regulation…………………….…..4
Demounting Tyre………………………….….. 4
Mounting Tyre …………………………………6
Inflating Tyre ………………………………..…7
RightSupplementaryArm 8
Left SupplementaryArm 11
Troubleshooting 14
Maintenance .. 15
Optional Device-Digital Inflator .... 17
Storing .. .18
TWCSeries Oil SafetyData ... .19
TWCSeries CircuitDiagram ........... 20
TWCSeries PneumaticDiagram. ..... .. .23

LAUNCH TyreChanger(TWCSeries)
1
General Information
Rules tonameTWCseries
TWC- means tyre changer
TWC 502RDB+
⑥
⑤
④
③
②
①
Meaning of code:
-for rim clamping diameter: 4 stands for 10”～19”(20”);
5 stands for 10”～23”(24”);
6 stands for 10”～26”;
②- for shape of turntable: 0 stands for round turntable;
1 stands for square turntable;
2 stands for cross turntable;
3 stands for asymmetric turntable;
③- post working mode: 1 stands for swing arm (semi-automatic);
2 stands for tilting arm(automatic);
3 stands for swivel arm (automatic)
④- for supplementary arm information: R stands for right supplementary arm;
Lstands for left supplementary arm;
D stands for double supplementary arm;
N stands for none supplementary arm;
⑤- for inflating device: I stands for inflating gun;
M stands for meter inflating box;
D stands for digital inflating gauge (LED display);
⑥- for inflating mode: B stands for quick inflator;
C stands for normal inflating;
- for roller set: + stands for roller set;
For example:
TWC-502RDB+--------- thetyre changer’srim clamping diameteris 10″-23″(24″). It isequipped with round turntable, tilting
post(automatic), right supplementary arm, digital inflating box(LED display), quick inflator and roller set.

LAUNCH TyreChanger(TWCSeries)
2
Usage
TWC series are used for demounting, mounting and
inflating tyres of small and mediumvehicles.
Mount/demount help device and quick-inflating device
features simple operation and high reliability.In addition, it
can also be agreathelp in car repair garage and tyre
dealers.
Features
lIntegrate demounting, mounting and inflating, wide
rim diameter capacity
lThe steel mount/demount is cast from excellent alloy
material with special shape and durable performance.
The supplied plastic mount/demount head with the
equipment ismade from special engineering plastic
that has enough intensityand will not damage the
tyre or the rim.
lThe two clamping cylinder ensures accurate central
alignment, so that the rim can be held tightly.
lPedal set designed for ergonomical use
lWithadjustableopening, beadbreakeris
suitablefortyresofdifferentsizes
lTyre lever and lubricant box within the reach of
operator technical specifications
Technical data
Model Height Length Width Weight
TWC4*1** 1705mm 1020mm 810mm 204kg
TWC4*2** 1725mm 1020mm 810mm 218kg
TWC5*1** 1820mm 1015mm 870mm 228kg
TWC5*2** 1880mm 1350mm 950mm 320kg
TWC6*2** 1880mm 1350mm 950mm 340kg
Electric specifications
Voltage alternatives:
AC110V(±5%)60Hz（±1Hz）
AC220V(±5%)50Hz（±1Hz）
AC230V(±5%)60Hz（±1Hz）
Power: 1.1Kw
Phase: Single
RPM of turntable: 6－8r/min
Air supply
Working pressure: 8-10bar
Bead breaker force: 14075N
Noise
Working noise: <70dB(A)
ApplicableRange
Working conditions
Working temperature: -40 －45
Transport/store temperature: -40 －55
Humidity: 30－95%
Altitude: less than 1000m
Model Max wheel diameter Max rim width
4 series 960mm(38") 360mm(14")
5 series 960mm(38") 380mm(15")
6 series 1050mm(41") 380mm(15")

LAUNCH TyreChanger(TWCSeries)
3
Main Structure
Fig.01-1
Fig.01-2
The main structure is shown in Fig. 01.
A. Return spring
B. Swing arm
C. Hexagonal column
D. Mount/demount head
E. Clamping jaw
F.Turntable
G.Tilting post control pedal
H. Clamping cylinder control pedal
I. Bead breaker control pedal
J.Turntable control pedal
K. Knob
L. Locking lever
M. Post
N. Clamping cylinder
O. Lubricant box
P. Bead breaker handle
Q. Bead breaker arm
R. Bead breaker shoe
S.Tyre lever
T. Locking handle
U.Air pressure regulator, gaugeand lubricator assembly
V. Horizontal arm.
Accessories provided are shown in Fig.02
001-Tyre lever
002-Brush
Fig.02-a
Fig.02-b

LAUNCH TyreChanger(TWCSeries)
4
Operation
Attention:
The machineis onlyto beoperatedbyspecially
trained and authorized personnel. Use appropriate
equipment, tools and personal protective equipment,
such as eye-glasses, ear-plugs and working boots,
when operating the tyre changer.Make sure that the
power,air sources andthe oillevel in the oil cupare
in accordance with the requirements.
GeneralRegulations
lToavoid damage when mounting and demounting
tyre, especially the alloy ones, use the tyre lever
offered by manufacturer.
lFor easier demounting and better protection of the
tyre and rim, lubricate the area between the rim and
tyre bead, where thebead breakershoe goes in,
with industrial lubricant or thick soap solution.
lPay special attention to rotary direction marked on
some flanges or tyres.
lFit the tyre on the rim of matched size.
lCheck for damages (distortions, surface damages,
excessive runout, erosion or overall wear) before
demounting.
lNever ignorethe mounting anddemounting
requirements of the special wheel.
lWhen inflating thetyre, make surethe pressure
increases in an even way.Pay attention to status of
the tyre bead.
Demounting Tyre
Preparing
lDeflate the tyre thoroughly.
lRemove all the foreignsubstance andweights from
the rim (Fig. 03).
Fig.03
Demounting
Attention:
Lubricate the bead with abrush dipped in soap
solution before beadbreaking in order to protect
tyre bead from wear. (Fig. 04).
Fig.04
lPlace the tyre betweenthe bead breaker shoe and
rubber pad and position the bead breaker shoe max
1cm away from the rim flange (Fig.05). Depress
pedal “”to unseat bead from rim.
lRepeat the above stepsto unseat beadthoroughly
from the rim.
lPlace the wheel on the turntable. For the asymmetric
deep groove rim, keep the narrow rim upward.
lDepress pedal “”to the end to clamp the rim.
Attention: Different types of clamping can be chosen
in accordance with different rims.
ØIn case of inward clamping, shrink the jaws
together,placethe wheelon the turntable and
depress pedal to clamp.
ØIn case of outward clamping, enlargethe jaws
outward (2-3cm away from periphery of the rim)
and place the wheel on the turntable and depress
pedal to clamp it (Fig. 06).
Fig.05
Fig.06

LAUNCH TyreChanger(TWCSeries)
5
Tyrechangerwithswing arm:
lPull back theswing arm(3, fig.07)to working position,
adjust hexagonal column(4) upand down to make
mount/demount head 1-2 mm away from rim flange
to protect rim(fig.09), turn knob (12)to lock swing arm,
and turn locking handle(2) clockwise to lock
hexagonal column.
Tyrechangerwithtilting post:
lDepress pedal ““to restore the tilting postto its
working position (Fig.08).
lPress the hexagonal column and adjust hexagonal
column and horizontalarm to makemount/demount
head 1-2 mm away from rim flange to avoid
scratching rim(fig.09). Press button (a) (fig.08) on the
locking handle to lock the hexagonal column.
Fig.07
Fig.08
Fig.09
Attention:
The angle of the mount/demount head has been
adjusted bymanufactureraccordingtostandardrim
(15"). Re-adjustment maybe necessary toprevent
scratching the tyre when the rim is extremely large or
small.
Lift the tyre bead onto the demount/mount head with tyre
lever( to make it easy,press down the tyre opposite to the
mount/demount head)(fig.10) Depresspedal “”to
turn the turntable clockwise until bead is unseated. To
avoid damage to the tube when where is one, it is
advisable to place theair inflatingvalveabout 10mm
(fig.11) away from the mount/demount head.
Fig.10
Fig.11
Caution:
In case thedemountingis hindered, stopthe machine
immediately.Lift up thepedal ”to turn the
turntable counter-clockwise to clear away the
hindrance.
lIf there is tube in the tyre, remove it first.
lLift the lowertyrebead sothatthe rimat the relative
side enters the groove (fig.12), use tyre lever to lift
the lower bead onto the mount/demount head.
lDepress pedal “ ” to separate the lowerbead from
rim.
lDepress pedal ““to loose thejaw totakethe
rim off.

LAUNCH TyreChanger(TWCSeries)
6
Fig.12
Caution:
Keep handsand therestof human bodyawayfrom
the moving parts ofthe machine. Neverwearnecklace,
bracelet or loose clothes when operating the machine
as it may cause danger!
Mountingtyre
Attention:
Check the size of tyre andrim to see if theymatch
each other.
lClamp the rim tightly in the same way as demounting
tyre.
lUse lubricant such as thick soapsolution onthe tyre
and the rim.
Tyre changer with swing arm:
lPlace the tyreonto therim atan angleto the
turntable, left side higher,pull back the swing arm in
working position.
Tyre changer with tilting post:
lPlace the tyreonto therim atan angleto the
turntable, front side higher(fig.13), depress down
pedal ““torestore the post (fig.13), adjust the
mount/demount headto rightposition,finally,press
locking button.
Fig.13
Fig.14
lAdjust relative position between the tyre and the
mount/demount head to position the tyre bead above
the left lip of the head (fig.15A) and below the right
lip(fig.15B).
Fig.15
lPress down the sidewall of the tyre. Depress the
pedal ““to turn the turntable clockwise, making
the lower tyre beadfall into therim groove
completely.
lIf atube needs to be installed in the tyre, check first
for the possible damages. Round itonto the rim.
Make sure to keep the tubein theright position
throughout the mounting process.
lToinstall theupper tyrebead and adjustposition of
the tyre bead (same as mount of the lower tyre bead
in Fig. 15). Draw out the roller and keep its side
surface 1—2cm away from margin of the rim. Place
the press block on theupper bead 20cm clockwise
away from the mount/demount head. Press the
control lever to make the press block go down
5—7cm to press thesidewallby handstoseat tyre
bead into the rim groove (Fig. 16).

LAUNCH TyreChanger(TWCSeries)
7
Fig.16
lDepress the pedal ““toturn theturntable while
keeping pressing on the tyre. When only 10—15cm
is left, slowdown toavoid damageof thetyre bead.
Stop the motor if there is any indication for damage.
Lift the pedal “”byfoot toturn the turntable
counter-clockwise. Try againafter makingthe tyre
back to the original shape.
Attention:
uIf the rim size does not change, it isnot
necessary to loose thelocking handle
after finishing the mount and demountof
the tyre and adjustthemount/demount
head before mount anddemount of tyre.
The operation will be continued by
depressing the columntilting control
pedal to make the titling column let go
and restore automatically.
uMake sure nobody isbehindthe tilting
post when depressing pedal (G).
uIn the process of clamping, keep head
and hands away from the area between
the tyre and the horizontal arm in case
injury would be incurred.
Inflatingtyre
Danger!!
Inflating can behighly dangerous. Take precautions
and pay close attention tothe procedures. Check
pressure gauge and air circuit are in good condition
before inflating.
The machine is equipped with agauge to read the
pressure in the tyre.
lLoose the wheel on the turntable.
lConnect the outlet of the inflating device to the air
inflation valve as shown in Fig.17.
lSlowly and repeatedly depress theinflationpedal (to
avoid over-high pressure) tomake surethat the
reading on pressure gauge within the
manufacturer’srequirements. The pressure should
not exceed 3.5 bar.The user may adjust the
reducing valve in the machine to getdifferent
pressures according to requirements.
Quick-inflation:
lIf the tyre is tubeless orthe tyre does notmatch the
rim hermetically,inflation method above-mentioned
will has noeffect. In thiscase, thequick-inflation
should be adopted. The quick-inflation method is to
depress pedal “ ” to lock the rim, then depressthe
inflation pedal on right-hand of thecabinet to its
end quickly and loose the pedalimmediately.The
quick-inflation is finished with arat-tat.
Attention:
Make sure that the tyre is clamped tightly,otherwise it
has danger of death.
Warning: Danger of explosion!
The safety procedures should be closely followed.
Review and abide by the following instructions.
Otherwise serious injury ordeath can be resulted.
The manufacturer shall not be held responsible for
any possible accident when the safety procedures are
not followed.
uCarefully check the dimensionsof rimand
tyre to see if they match eachother.Check
and make sure that the tyre is not worn or
damaged before inflation.
uWhen a high pressure is required, remove the
tyre from thetyre changer andresumethe
inflation in a special protective hood.
uBe careful when inflating the tyre. Keep
hands andother parts ofhumanbodyaway
from tyre.
Fig.17

LAUNCH TyreChanger(TWCSeries)
8
RightSupplementaryArm
Structure (Fig.18)
Fig.18
a- Slider
b- Press block
c- Fore swivel arm
d- Control box
e- Roller
f- Cone
g- Disk
h- Control lever
i- Back swivel arm
j- Sliding guide
k- Post weldment
l- Slide board
m- Roller arm
n- Disk arm
o- Lifting cylinder
Operation
Attention:
ØThe supplementaryarm is specially designedfor
TWC series pneumatictyre changer of LAUNCH.
Never mount it onother machines, otherwise,
LAUNCH shall not liable for any accidents.
ØThe supplementaryarm unit has functionof
automatic self-centering. The backswivel arm
moves to center of turntable, it will lock
automatically. Lift thecontrol lever to unlock.
Demounting Tyre
lAfter breaking bead from the rim completely
following procedures described in last chapter,use
the supplementary arm to simple operation.
lUse the cone to simple operation of outward
clamping. Open the jaws outward (2-3cm away from
periphery of the rim) and place the wheel on the
turntable. Draw out the back swivel arm, fit and aim
the cone at the central hole of the wheel (fig.19),
press down the control lever to keep the rim close to
the jaws, and depress pedal “”to clamp it
(fig.20), remove the cone.
Fig.19
Fig.20
lDraw out the roller and make it close to the tyre bead.
Press down the control lever to move the roller
downward 3-5cm, depress the pedal ““to turn
the turntable clockwise lubricating the tyre bead by a
brush (fig.21).

LAUNCH TyreChanger(TWCSeries)
9
Fig.21
lAdjust the mount/demounthead toright position and
lock it following the procedures in last chapter.
lInsert the tyre lever into between the mount/demount
head and the tyre bead. Lift the control lever to move
the roller to its none working position (fig.22).
Fig.22
Turn the swivel arm, and place the press block on the tyre
opposite to the mount/demount head. Lower down the
control lever to press down the block 5-6cm, then prize the
tyre bead onto the mount/demount head(fig.23). (The
positions of the mount/demount head and tyre bead are
described in last chapter.)
Fig.23
lMove the press block to its none working position,
depress the pedal ““to turn the turntable
clockwise until the rim is separated. In case of a
tubed tyre, itisadvisableto keepthe air inflation
valve to the right ofthe mount/demount head about
10 cm away to avoid damaging.
lIf there is tube in the tyre, remove it first.
lDraw out the disk, and make the disk under the
lower bead, but not under rim. Insert thetyre lever
between the head and bead and press it down. Lift
the control lever up tobreak the bead from rim
groove. Make the lower tyre beadopposite to
mount/demount headenterinto therim groove, and
prize the lower tyrebead onto the ball protuberance
(fig.24).
Fig.24
lRestore the disk anddepresspedal “ “ until the
lower tyre beadis separated fromthe rim. Depress
the pedal “ ” to lose jaws, finally remove the tyre
and rim.
Attention:
Keep hands and otherbody parts awayfrom the
moving parts ofthe machine.Never wear
necklace, bracelet or loose clothes when
operating the machine as it may cause danger!
Mountingtyre
Attention:
Check the size of tyre andrim to see if theymatch
each other.
lSeat the lower beadfollowingproceduresin last
chapter.
lIf it is atubed tyre, check first forthe possible
damages. Roundit ontothe rim. Makesure to
keep the tube in the right position throughout the
mounting process.
lToseat the upper tyrebead, place thetyre well and
readjust position of the tyre bead(same asmount of
the lower tyre bead). Draw outthe roller and make
its side surface 1—2cmawayfrom margin ofthe rim.
Place the press blockon the upper bead 20cm
clockwise away from the mount/demount head.
Press the control lever to make the press block go
down 5—7cm to seat tyre bead into the rim groove

LAUNCH TyreChanger(TWCSeries)
10
(Fig. 25).
Fig.25
lDepress the pedal “ ” to turn the turntable
clockwise. When only10—15cm(Fig.26)is left, slow
down to avoiddamageof thetyre bead.Stop the
motor once there isany indication for damage. Lift
the pedal to turn the turntable counter-clockwise. Try
again when the tyre is back to the original shape.
Fig.26
LeftSupplementaryArm
Structure(fig.27)
a- Post
b- Cone
c- Hood
d- Sliding guide
e- Spacer pin
f- Back swivel arm
g- Control box
h- Control lever
i- Fore swivel arm
j- Disk
k- Disk arm
l- Roller
m- Cylinder
1- Locking clip
2- Knob
3- Roller Fig.27

LAUNCH TyreChanger(TWCSeries)
11
Operation
Attention:
ØThe supplementaryarm is specially designedfor
TWC series pneumatictyre changer of LAUNCH.
Never mount it onother machines, otherwise,
LAUNCH shall not liable for any accidents.
ØThe supplementaryarm unit has functionof
automatic self-centering. The backswivel arm
moves to center of turntable, it will lock
automatically. Lift thecontrol lever to unlock.
Demounting Tyre
lAfter breaking bead from the rim completely
following procedures described in chapteroperation,
use the supplementary arm to simple operation.
lUse the cone to simple operation of outward
clamping. Open the jaws outward(2-3cm away from
periphery of the rim) and place the wheel on the
turntable. Draw out the back swivel arm., fit and aim
the cone at the central hole of the wheel (fig.28),
press down the control lever to keep the rim close to
the jaws, and depress pedal “”to clamp it
(fig.29), remove the cone.
Fig.28
Fig.29
lDraw out the swivel arm and position it as in figure
30, press downthe spacerpin (①,fig.30) tolock the
fore swivel arm under back swivel arm. Following
②,③,press down locking clip and move the roller
to the position2-3cm away fromrim. Lower down
control lever to depress down tyre 3-5cm as ④,
finally, pull out the knob as⑤.
Fig.30
lDepress the pedal ““to turn the turntable
clockwise, lubricating the bead with brush.(fig.31)
Fig.31
lAdjust the mount/demounthead toright position and
lock it following the procedures in chapteroperation.
lMove the front swivelarmto thepositionasin figure
32, pull out spacer pinas ①,pressdown the knob
as ②,lower down control lever as③to press down
tyre 3-5cm, insert tyre lever between the head and
the bead as ④,finally liftthe lever torestore the
roller.
Fig.32

LAUNCH TyreChanger(TWCSeries)
12
Turn the fore swivel arm, and placethe press blockon the
tyre opposite to the mount/demount head. Lower down the
control lever to press down the block 5-6cm, then prize the
tyre bead onto the mount/demount head with tyre
lever(fig.33). (The positions of themount/demounthead
and tyre bead are described in chapteroperation.)
Fig.33
lMove the press block to its none working position,
depress the pedal ““to turn the turntable
clockwise until the rim is separated. In case of a
tubed tyre, it is advisable to keep the air inflation
valve to the right ofthe mount/demount head about
10 cm away to avoid damaging.
lIf there is tube in the tyre, remove it first.
lDraw out the disk, and make the disk under the
lower bead, but not under rim. Insert thetyre lever
between the head and bead and press it down. Lift
the control lever up tobreak the bead from rim
groove. Make the lower tyre beadopposite to
mount/demount headenterinto therim groove, and
prize the lower tyrebead onto the ball protuberance
(fig.34).
Fig.34
lRestore the diskand depress pedal ““until the
lower tyre beadis separated fromthe rim. Depress
the pedal “”tolosejaws,finally remove the tyre
and rim.
Mountingtyre
Attention:
Check the size of tyre andrim to see if theymatch
each other.
lSeat the lower bead following procedures in chapter
operation.
lIf it is atubed tyre, check first forthe possible
damages. Roundit ontothe rim. Makesure to
keep the tube in the right position throughout the
mounting process.
lToseat the upper tyrebead, place thetyre well and
readjust position of the tyre bead(same asmount of
the lower tyre bead). Draw outthe roller and make
its side surface 1—2cm awayfrom marginof the rim.
Place the press blockon the upper bead 20cm
clockwise away from the mount/demount head.
Press the control lever to make the press block go
down 5—7cm to seat tyre bead into therim groove
(Fig. 35).
Fig.35
lDepress the pedal “ ” to turn the turntable
clockwise. Whenonly 10—15cm isleft, slowdown to
avoid damage ofthe tyrebead. Stop themotor once
there is any indication for damage. Lift the pedal to
turn the turntable counter-clockwise. Try again when
the tyre is back to the original shape.

LAUNCH TyreChanger(TWCSeries)
13
TroubleShooting
Symptom Cause Solution
Turntable can turn only in
one direction. uPower switch is damaged.
uReplace the power switch.
Turntable doesn’t turn. uBelt is damaged.
uPower switch is damaged.
uThere is problem with
motor.
uBelt is loose.
uReplace the belt.
uReplace the power switch.
uCheck power wire of motor.If the motor
is damaged, replace it.
uTension the belt.
Turntable can notlock the
rim tightly. uJaws are worn. uAir leakage inclamping
cylinder.
uReplace the jaws.
uReplace the cylinder seal.
Horizontal arm and
hexagonal columncan’tbe
locked.
uThe locking square board
in wrong position.
uThe locking hexagonal
board in wrong position.
uAdjust them to right position according to
this manual.
Horizontal arm doesn’tmove
after pushing orpulling.
Vertical shaft can not move
upwards or downwards.
uSquare locking board is
not in correct position.
Hexagonal lockingboard
is not in correct position.
uRefer to the chapter “Maintenance”.
Tilting post tilting istoo fast
or too slow. uThe pushing cylinder expels too muchor too
little air.
uPressure of compressed
air has not reached 8bar.
uOpen the side cover of the cabinet,
slightly adjust two air inflation regulators
by hand to smooth the movement, and
then tighten the cap.
The locking valve is clogged
after the lever is pressed. uO-ring of the valve is damaged.
uThere is problem with
airflow regulating valve.
uReplace the valve or O-ring.
uAdjust or replacethe pressureregulating
valve.
uReplace the airflow regulating valve.
Pedal can notbe restored to
its original position. uReturn spring is damaged.
uReplace the return spring.
There is abnormal noise at
the moving part. uThe fixing screw is loose. uThere is foreign matter
inside.
uTighten the fixing screw.
uGet rid of the foreign matter.
The motor does not turn or
the output torque is not
enough.
uThe moving part is stuck.
uThe capacitor is failed.
uThe voltage is too low.
uThe circuit is open.
uGet rid of the stuck point.
uReplace the capacitor.
uPause and wait for the deviceto be
restored.
uRepair.
Cylinder is weak in output. uThere is air leakage.
uMechanical hindranceis
causing the problem.
uThe pressure of the
compressed air isnot high
enough.
uStrengthen the seal.
uFix the mechanical problem.
uChange the air source.
Air leakage is found. uAir hose is damaged.
uThe outlet of the air valve
is damaged.
uThe gasket cement is
gone.
uReplace the related part.
uAdd gasket cement.
uAdd gasket cement.

LAUNCH TyreChanger(TWCSeries)
14
Maintenance
Attention:
Only the specialized technician can perform the
maintenance. Before anymaintenance,disconnectthe
power and keep the plug within the sight of the
maintenance personnel.Shut off power and
compressed air,push the air valve switch to Off”
position and depress pedal (H) for 3or4times to
bleed the residual compressed air in the machine.
Tokeep the tyre changer in good condition and to prolong
the work life, it is necessary to do regular maintenance
according to the instructions on the user’smanual.
Otherwise, the normal operation and reliability of the
machine will be affected, or personal injury would be
caused.
lKeep the machineand working area clean, prevent
dust or foreign matterfromentering the moving
parts.
lKeep the hexagonal column clean and dry (clean
with diesel as in Fig. 36).
lKeep the horizontal armandhorizontalpole clean
and lubricate them periodically so thatit can move
expectably.
lWeekly clean theturntable,jaws, guideways (Fig.
37).
lWeekly clean and lubricate base pin.
lWeekly lubricate thefaying surface between moving
parts and rubbing surface with lithium lubricant
(grease).
lCheck theoil levelin the oilcup regularly.Ifthe oil
level does not reach the second line, fill SAE#20
(Fig.38).
lRegularly drain the condensed material in the air
cleaner.
lRegularly check and adjust the tension of the belt.
lCheck all connecting parts andbolts regularly and
tighten them if necessary.
Fig.36
Fig.37
Fig.38
lCheck and adjust thelocking mechanism of
hexagonal column periodically to insure the
distance between hexagonal columnand rim
(regularly 2~3 mm approximately) after the
hexagonal column is locked.
Attention:
Tighten the fixing screws (shownin Fig.39as part A)
on the turntable after every 15 days of operation.
Fig.39
If the verticalclearanceof thehexagonalcolumn is
too much, adjust it according to the following steps:
lShut off compressed air.
lRemove the protectivehood ofthe hexagonal
column.
lAdjust the retaining nutof lead screwor the pushing
screw at the front of locking board by wrench.
lTurn onthe compressed air andthencheck the
position after locking.
If the horizontal arm can not be moved smoothly or

LAUNCH TyreChanger(TWCSeries)
15
the clearance is too much after locking, do the
adjustment according to the following procedures:
lOpen the protective cover of the tilting post.
lAdjust the M6 screws at bothends by wrench and
push the arm at the same time until it can be
moved smoothly.Then tighten the nut.
lAdjust the screw at middle by wrench and lock the
horizontal arm to see the change until the
clearance is satisfactory.Then tighten the nut.
Periodically cleanthecontrolvalves forclamping
jaws and bead breaker to insure their normal
operation.
lRemove the side cover of the cabinet.
lLoosen the control valve mufflerand airbleed
valve muffler,and clean them with compressed air.
(Fig.40)
Fig.40