Launch TWC-481 User manual

LAUNCH Tire Changer TWC-481
i
TWC-481
Swing Arm
Tire Changer
Launch Tech USA, INC.
2460 Peck Road
Whittier, CA 90601 USA
1-877-LAUNCH 9 62/463-1380
62/463-1 90 (FAX)
www.launchtechusa.com
Installation and Parts
Manual

LAUNCH Tire Changer TWC-481
ii
Table of Contents
Safety Precautions ································································································································1
Main Structure ······································································································································2
Tools ···················································································································································3
Installation ···········································································································································3
Unpacking·····································································································································3
Installation ····································································································································3
Transport: ·····································································································································3
Spacing ········································································································································4
Po er and Air Connections ·············································································································4
Adjusting ······································································································································4
Initial Operation (Fig.05) ···················································································· 4
Clamping System of the Ja s·············································································· 5
Drive system································································································· 5
Bead Breaker ································································································ 6
Hexagonal Column Clamping System ····································································· 6
Air Pressure Regulator, Gauge and Lubricator Assembly ··············································· 6
Mount / demount Head ················································································ 7
Direction of the s itch’s installation······································································· 9
Parts List············································································································································ 10
The earing parts are indicated by *.·····································································17
TWC-481 Electrical Diagram········································································23
TWC-481 Air Passage Diagram ····································································24

LAUNCH Tire Changer TWC-481
1
Safety Precautions
This manual is a necessary part of the product.
Please review carefully.
Keep the manual for later use when maintaining
the machine.
This machine can only be used for the designated
purpose. Never use it for any other purpose.
The manufacturer is not responsible for any
damage incurred by improper use or use for the
purposes other than the intended one.
Before installing and adjusting the equipment, pay
attention to the following:
Read this manual and all other instructions for the
equipment thoroughly. Modification to any
components or parts, or use the machine for other
purpose without either obtaining the permission
from the producer, or observing the requirement of
the instructions may lead to direct or indirect
damage to the equipment.
The installation and maintenance personnel should
have a good understanding of electrical devices.
The equipment can only be operated by qualified
personnel with special training.
TWC-481 should be installed on the stable ground.
Keep the back panel 0. M away from the wall for
good ventilation. Enough room should be left on
both sides of TWC-481 for convenient operation.
Do not put TWC-481 in a place with high
temperature or moisture, or near the heating
system, water tap, air-humidifier or furnace.
Do not install TWC-481 near a window with
sunlight. Protect the unit with a curtain or shield
if necessary.
Go through the accessory list carefully before
installation. Should there be any questions
please contact your agent or Launch Tech Co., Ltd.

LAUNCH Tire Changer TWC-481
2
Main Structure
A Return spring B Swing arm C Hexagonal bar D Mount/demount head
E Clam Jaw F Turntable G
Stop Screw knob
H Clamping cylinder control pedal
I Bead breaker
control pedal
J Turntable control pedal K Hexagonal column
locking handle
L Column
M
Tool box N Clamping cylinder
assembly
O
Lube bucket P Bead breaker handle
Q
Bead breaker arm S Bead breaker shovel T Tire lever U Inflation pedal
V Air Pressure Regulator, Gauge and Lubricator Assembly

LAUNCH Tire Changer TWC-481
3
Tools
To ensure a smooth installation and adjustment, please
prepare the following tools: Two adjustable wrenches, one
set of metric box wrenches, one pair of pliers, one
screwdriver, one digital multi-meter (for voltage
measurement).
Installation
Unpacking
Unpack according to the instructions on the
package. Remove the packing materials and
inspect the machine for possible damage or loss
of accessories during shipping.
Keep the packing materials out of the reach of
children. Handle in an appropriate way if the
packing material is likely to cause pollution.
Remove the cabinet, column, swing arm and
accessory box fitted on the skid and keep them in
safe place
Caution:
A special anti-rust coating is applied on some parts
and may attract dust. Clean it when necessary.
Installation
Install the Hexagonal bar spring and cap then
install the column, on the machine cabinet as
show in Fig.02, and then torque fastens.
 (All accessories are located in the accessory
box) Install the tool box on the left side of the
cabinet according to figure 03. (When no assist
arm is to be installed)
Transport:
Transporting with fork lift vehicle
Prevent the bead breaker and swing arm from
moving during transportation. (Fig. 04)
Excessive tilting should be avoided in
transportation.
Do not drive the fork lift vehicle carrying the
equipment too fast.
Try to keep the machine at the lowest position
and make sure it won’t overturn in transportation
(pay attention to the position of the gravity
center).
Fig.02
Fig.03
Fig.04

LAUNCH Tire Changer TWC-481
4
Spacing
The location to install the machine should be in
accordance with safety regulations:
The machine should be installed in a place close
to the main power source and compressed air
system.
Install the machine on smooth concrete surface
or another surface with hard flooring. 4 anchor
bolts can be used to fasten the machine to the
floor to avoid vibration and noise.
Leave enough space for the operation and
maintenance of the machine. The space should
be no less than 1M (39”) in front and on the two
sides of the machine, 0. M (20’) behind it so that
operation on different parts shall not be hindered.
If the machine has to be installed outdoors, a
protective shelter should be built.
Never operate the machine in a place with
flammable gas.
Note:
For safety and proper operation, keep the machine at
least 0.5 (20”)away from any wall.
Power and Air Connections
Before installation, check to verify that the
electrical power and the compressed air sources
are in accordance with the specifications on the
nameplate. Any electrical connection should be
done by the specially trained technician.
The power outlet should be at a place within the
sight of the operator. The height should be
between 24”

67”.
In case the line voltage is not stable, a voltage
stabilizer should be used between power source
and the machine.
The machine should be well grounded.
The tire changer is not equipped with overload
protection. Please connect power according to the
electric diagram included in the User’s manual.
Otherwise, the manufacturer will not be responsible for
any accidents.
Adjusting
Note:
ake sure that the power, air sources and the oil
level in the oil cup are in accordance with the
requirements.
Initial Operation (Fig.05)
Note: The three pedals should be on the initial
position.
Fig.0
Depress pedal (J), turntable (F) will rotate
clockwise;
Lift the pedal (J), turntable (F) will rotate
counter-clockwise;
Depress pedal (I) to move bead breaker (S),
release it to restore;
Depress pedal (H), clamp jaw slides (E) on the
turntable will open. Depress it again, the jaw
slides will close;
Rotate the stop screw knob (K) to position the
swing arm;
Press the Hexagonal bar (C) and move the
Hexagonal bar locking handle(B) to lock the
Hexagonal bar;
Loosen the Hexagonal column locking handle
(B) and the Hexagonal column will reset.
When the Inflation pedal U

Fig.01-1

is lightly
pressed, air will expel from the air hose
connected with the inflation gauge (mounted on
tool box). When the pedal is pressed down to
the lowest position, air will quickly blast behind
four jaws (the end of the slides).

LAUNCH Tire Changer TWC-481
5
Clamping System of the Ja s
The position of the jaw on the turntable is
controlled by the movement of the piston rod,
which in turn is controlled by pedal H. There are
three positions for pedal H.
When placed in the upper position, the piston
rods will move to the center and the jaws will be
in the minimum diameter position.
When placed in the lower position, the piston rods
will move to the outside and the jaws will be in the
maximum diameter position.
While the jaws are in motion (either outward or
inward), step slightly on pedal H to place it in the
middle position, the movement of the jaws will be
stopped. This position can be used to place the
jaws anywhere between the maximum and
minimum positions
The principle of the above motion can be
explained in the shape of pedal cam. The three
positions in the cam, set the corresponding
positions on the pedal H (Fig.0 ), which in turn
set the positions of the distribution valve. The
distribution valve controls the air passage and the
movement of the piston.
The clamp jaws (Fig.06) can be placed at four
positions. To adjust their positions, first, pull out
pin sockets from their holes then move the slide
to the correct position on slide carriages and
insert the pin sockets into corresponding holes,
finally, install the resilient clip. Note: Make sure
that the four clamp jaws are at the same position
on turntable. The four positions of clamp jaws are
as follows.

Fig.07


Fig.06
Fig.07
Position Out rim clamping diameter
1 17″

22″
2 1 ″

20″
3 12″

18″
4 10″

16″
Drive system
The drive system for this machine is made up of
the motor, pulley, transmission and turntable.
(Fig.08)
Fig.08
The motor RPM is about 1320. The ratio of
speed is 200 to 1 The direction of motor is
controlled by pedal J (Fig.0 ). Depress the
pedal, the motor rotate clockwise, the turntable
will also move clockwise. Release the pedal
to stop the motor. Lift the pedal up with the
foot, the motor and the turntable will rotate
counter-clockwise.
The electrical wire should be well-grounded.
In the process of demounting tires, the turntable
normally rotates clockwise, unless when the
demounting is obstructed, then the table can be
backed up

LAUNCH Tire Changer TWC-481
6
Bead Breaker
The bead breaker is on the right side of the
cabinet. As the procedure requires, depress
pedal I (Fig. 0 ) to work the cylinder, the piston
will move the bead breaker arm towards the
direction of the cabinet. The breaking force
should be around 1407 N ( ,620 lbs). Release
pedal I, the piston will move in an outward
direction.
The bead breaker shovel is allowed to swing
within a certain range. In case the distance of
swing is not appropriate, adjust the nut (Fig.09) at
the right end of the piston rod.
Fig.09
Hexagonal Column Clamping System
The Hexagonal bar (shown in Fig.10) can move
up and down freely while the Hexagonal bar
locking handle is in the downward position. While
the Hexagonal bar locking handle is moved 120°
or so, the cam connected with the handle will lift
the locking plate to lock the Hexagonal bar. If it
does not lock, you can adjust the bolt’s position to
assure the locking.
Fig.10
Air Pressure Regulator, Gauge and
Lubricator Assembly
As shown in Fig.11, there is a knob for the
regulator. When pulled up, the pressure can
be increased or decreased by turning it
clockwise or counter-clockwise. After
adjusting the operating pressure, press the knob
down to lock it.
The air separator works to filter the water and
impurities in the compressed air. When water
and impurities are above the red line, open the
drain valve to release them.
The lubricator is used to add a certain amount
of lubricant into air for the moving parts in the
cylinder and regulator. Depress pedal H or I,
3

times, a drop of oil will drop into the cup in
the regulator. If it doesn’t happen, the
adjusting screw can be used adjust the output to
specification.
Fig.11
Lock Bolt

LAUNCH Tire Changer TWC-481
7
Mount/Demount Head (Old Style)
Checking calibration measurement
Mount a 1 or 16 inch diameter aluminum alloy rim
(preferably new) onto the turntable.
Lower the
mount / demount head onto the rim and
lock.
By means of the appropriate gauge kit, check
measurements as indicated in Fig.12(for mount /
demount head with roller)and fig.13(mount /
demount head with insert).
If the measurements do not correspond proceed as
follows:
Calibration
Loosen all screws securing the mount / demount
head .
Lower the mount / demount head onto the rim and
lock it.
Finger-tighten screws A3-A4(figs.16 and 17) in
order to turn the mount / demount head and obtain
the correct measurements.
Tighten screws A1-A2 (figs.14,18 mount / demount head with roller;figs.1 ,19 mount / demount head with insert)
to tilt the mount / demount head and obtain the correct measurements and then finger-tighten screw B.
Unlock and raise the hexagonal column, then lower it onto the rim and lock again.
First tighten screws A1-A2-A3-A4 to tightening torque of 0Nm and check by means of gauges that the
measurements remain the same.
Lastly, tighten screw B to a torque of 0Nm and carry out checks once again with the gauges.
Periodic checks
After half a year of duty check measurements as stated in Checking. If they are incorrect proceed as follows:
Check that the screws(A1-A2-A3-A4-B) are tightened properly and repeat calibration as per Calibration.
If measurement 2 for the mount / demount head with roller (fig.12) or measurement 1 for mount / demount head
with insert (fig.13) are changed, the cause may be that adjusting nut (fig.10) has loosened.
Tighten or loosen the nut to increase or reduce lifting range.
Fig.12
Fig.13

LAUNCH Tire Changer TWC-481
8
Fig.14 Fig.1
Fig.16 Fig.17
Fig.18 Fig.19

LAUNCH Tire Changer TWC-481
9
Directional S itch’s Installation (Service Only)
1

Connecting the wire harness to the switch (fig31)
Observe the identification tags on wires and match then to the poles on the switch such as U2 to U2

They is no
sequence, but make sure the wires and poles match

Fig.20
2

Installation of the switch
The switch’s position to the bracket is shown as in fig32, you may have to rotate the switch slightly in the slots with
the attachment screw slightly loose to position the switch so that clockwise and counter clock potation of the motor
occurs correctly. Once in the correct position tighten the two screws.
Adjustment slots for switch location
The switch parameter
Fig 21

LAUNCH Tire Changer TWC-481
10
Parts List
This list is only for the reference of the maintenance personnel. The manufacturer will not be held responsible for any
use other than the designed purpose.
In case any damage occurs, please contact your dealer or LAUNCH with the corresponding codes in the list.

LAUNCH Tire Changer TWC-481
11

LAUNCH Tire Changer TWC-481
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LAUNCH Tire Changer TWC-481
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LAUNCH Tire Changer TWC-481
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LAUNCH Tire Changer TWC-481
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LAUNCH Tire Changer TWC-481
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LAUNCH Tire Changer TWC-481
17
Note:
The earing parts are indicated by *.
NO Erp's code Description
1 104130054 Pedal mat
2 103010326 Hexagon socket screw M6×12
3 X201012031 Side plate
4 201012416 Cabinet
5 104010003 Cable clip
6 105010449 Cable
7 104010268 Lube box cover
8 104010269 Lube box
9 104130246 Rubber pad A
10 103040063 Plain washer φ6
11 103010313 Hexagon socket screw M6×25
12 104130262 Rubber pad B
13 103020075 Hexagon bolt M8×25
14 103040026 Spring washer φ8
15 103030061 Hexagon Nut M8
16 201012268 Hood
17 103160026 Safe valve
18 103020075 Hexagon bolt M10×25
19 103040064 Plain washer φ8
20 103040026 Spring washer φ8
21 103030061 Locking nut M8
22 103170002 Air tank
23 104130131 Rubber hose
101 104130013 Working deck cushion cover
102 103020071 Hexagon Bolt M16×40
103 201010190 Working deck washer
104 201012029 Turntable
105 201011905 Square rotary body
106 Y103200250 Square rotary mat
107 103050018 Circlip for shaft φ65
108 201012037 Working deck taper sleeve
109 Y103201830 Slide carriage B
110 201010211 Clamping jaw
111 Y103201831 Sliding mouse
112 201012028 Sliding plate
113 Y103201832 Slide carriage A
114 103202027 Connecting rod
115 103040112 Plain washer φ12
116 103202024 Connecting rod units
117 103040044 Spring washer φ12
118 103020148 Hexagon bolt M12×30

LAUNCH Tire Changer TWC-481
18
119 103040044 Spring washer φ12
120 103020169 Hexagon bolt M12×60
121 201021016 Pin socket assembly
122 103990167 Resilient clip
123 103050002 Circlip for shaft φ12
124 103040112 Plain washer φ12
125 103202023 Position sleeve
126 201012269 Axis
127 104130258 Y Sealing ring 28×20×5
128 202010068 Guide sleeve
129 201011915 Clamping cylinder piston rod
130 103220082 Front cover of clamping cylinder
131 104130081 O Sealing ring φ65×2.65
132 103040112 Plain washer φ12
133 104130053 Clamping cylinder piston
134 103040112 Plain washer φ12
135 103040044 Spring washer light type φ12
136 103030061 Nut M8
137 103010327 Hexagon socket screw M8×25
138 103040049 Spring washer φ8
139 103040064 Plain washer φ8
140 103230054 Back cover of clamping cylinder
141 103230170 Clamping cylinder body
142 103100242 Nut locking L joint
143 201021009 Clamping cylinder assembly
144 103100242 Nut 3way pipe joint
145 104050033 Air compressing hose
151 201021008 Working deck assembly
152 201012029 Turntable assembly
201 Y103230037 Bead breaker cylinder body
202 103030106 Lock nut M16
203 103040117 Plain washer φ16
204 103230035 Bead breaker cylinder piston
205 104130055 High

low lip ring
206 104130061 O Sealing ring φ16×2.65
207 103040117 Plain washer φ16
208 201010172 Bead breaker cylinder piston rod
209 104130060 O Sealing ring φ180×3.55
210 103230168 Bead breaker cylinder cover
211 104130079 O Sealing ring φ19×2.65
212 202010068 Guide sleeve
213 201010179 Set screw
214 103040112 Plain washer φ12
215 201010179 Set screw