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Operating Instructions
All-Wheel Retrofitting Set
Item no. 23 59 28
Item no. 23 71 97
Item no. 51 70 44
Intended Use
The product serves to retrofit model vehicles of the Carbon-Fighter series from rear-wheel
drive (2WD) to four-wheel drive (4WD). Since the series has several models, three different
kits for retrofitting are available as well. Additionally, different components may have been
installed during model maintenance (e.g. differentials).
Therefore, the present installation instructions only show the general systematic installation
of the 4WD retrofitting kit. It only serves to illustrate the required steps.
The indicated work steps are identical for all models. The number and position of the affected
screws, however, differs and must be individually considered according to model and own
discretion.
For more information on which retrofitting kit can be installed in which model, see our
catalogues or the respective product at www.conrad.com.
This product complies with the statutory national and European requirements. All company
names and product names are trademarks of their respective owners. All rights reserved.
Conversion requires tools like Allen keys and screwdrivers in various sizes. You also
require threadlocker varnish and grease. See our catalogues and our website at
www.conrad.com for matching accessories.
Safety Information
The guarantee/warranty will expire if damage is incurred resulting from non-
compliance with the operating instructions! We do not assume any liability
for consequential damage!
We do not assume any liability for damage to property or personal injury
caused by improper use or the failure to observe the safety instructions! In
such cases the warranty/guarantee will expire.
• For safety reasons, any unauthorized conversions and/or modifications to the product are
not permitted.
• This product is not a toy and not suitable for children.
• Observe the increased danger of injury when handling tools.
• Empty your model's tank before conversion.
• For safety-technical reasons, check all screw connections for correct and tight seat after
conversion.
• Always use threadlocker varnish for „metal/metal" screw connections.
• Check correct function of all remote control elements.
• Do not leave the packaging material lying around carelessly since such materials can
become dangerous toys in the hands of children.
Installation of the 4WD Retrofitting Kit
Figures 1 and 2:
Different differentials have been installed in the Carbon series vehicles. The
retrofitting kit Conrad item no. 235928+237197 can only be installed in the models
in which the lower transverse links of the front axle (figure 1, item 3) are screwed to
the chassis. Figure 1 shows the top differential housing (1) and the lower differential
housing (2).
The retrofitting kit Conrad item no. 517044 can only be installed in the models in
which the lower transverse links of the front axle are screwed to the front (empty)
differential housing (figure 2). Figure 2 shows the top differential housing (1) and the
lower differential housing (2) with screwed-on transverse links (3).
Work steps for figure 3:
• Remove the car body + over-roll bars from the model.
• Remove the air filter (1) and the carburettor (2), disconnect the throttle linkage.
• Remove the servo lever of the steering servo (3).
• Loosen the hexagon socket screw of the braking mechanics (4) and remove the braking
lever.
• Remove the front and rear metal plates (5 and 6).
Work steps for figure 4:
• Remove any attachment screws of the RC box (1) that may still be present at the top.
• Remove the screws of both steering knuckles (2).
• Remove the skirting protection (3).
Work steps for figure 5:
Version 11/12
• Remove all screws at the bottom of the chassis that serve to attach the RC box (1).
• Remove all screws at the bottom of the chassis that serve to attach the front differential. If
the lower transverse links of the front axle are attached to the chassis, they must be removed
as well.
Work steps for figure 6:
• Remove the complete front axle unit from the chassis (1).
• Install the shaft tappet from the set on the output shaft (2). Use threadlocker varnish for the
attachment screw of the shaft tappet.
Work steps for figures 7, 8, 9:
• Place the differential (1) from the set into the upper differential housing. The large cogwheel
(2) must be placed so that the cogwheel can run freely in the corresponding recess of the
chassis plate (also see figure 9 or individual placement in your model).
• Insert the small cogwheel (3) from the set into the differential housing.
• Apply grease on the cogwheels generously and fill the side at the large cogwheel until
saturated (4). The differential housing must be filled to about half in this place to warrant a
lasting lubrication film.
• Figure 7 shows assembly of the differential into the upper differential housing. Figure 8
shows the installed differential with attached lower differential housing (the illustration shows
the differential version with installed transverse links). Figure 9 shows an example of an
indentation of the chassis plate in the area of the front differential.
Work steps for figure 10:
• Install the output shaft from the set (1) between the shaft tappets (2).
• Screw the front axle (3) to the chassis. Ensure that assembly does not cause tension in the
chassis and the drive strain (shaft).
Work steps for figure 11:
• Disassemble the front wheels.
• Remove the wheel tappets (1) from both axles (2). The tappet has two different sides;
therefore, note how the tappet is installed before disassembling it!
• Remove the top and bottom screws of of both steering knuckles (3).
• Remove the two axles (2) from the steering knuckles.
Work steps for figure 12:
• Install the two drive shafts from the kit (1) in the steering knuckles (2) and push the drive
shafts into the tappets of the differential (3).
• Screw on the steering knuckles again (4).
• Install the wheel tappets on the shafts (5). Observe correct installation of the tappets (see
„Work steps for figure 11).
• Install the wheels again.
Conversion from rear-wheel drive (2WD) to all-wheel drive (4WD) hereby is completed.
Install the RC box, carburettor and air filter again in reverse order. Make sure that the
components are placed correctly and firmly.
After installation of the carburettor, the movability of the choke lever must be verified. If the
choke lever cannot be operated or if it is difficult to operate, the carburettor must be loosened
and centred again. Check that the remote control is working correctly before every operation.
These operating instructions are a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1,
D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming,
or the capture in electronic data processing systems require the prior written approval by the editor.
Reprinting, also in part, is prohibited.
These operating instructions represent the technical status at the time of printing. Changes in
technology and equipment reserved.
© Copyright 2012 by Conrad Electronic SE.
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