M Aintenance; Checking The Tooth Flank Play; Restoring The Transmitter/Receiver Link; Regular Checks - df models Brushless HotHammer Notice D'utilisation

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.1 Checking the tooth flank play

The model is already assembled ready to run and can be put into operation imme-
diately. For optimum transfer of force, however, occasionally the tooth flank play
between the motor pinion and the main gear wheel should be checked.
Only if the gear wheels turn smoothly and mesh into one another without play will
the moderate power be used entyrely and premature wear prevented.
For this, the motor shaft and the drive shafts to the front and rear axles have to be
aligned to be precisely parallel and the gap adjusted in optimum fashion.
> Insert a strip of paper between the motor pinion and the main gear wheel and
turn it by hand.
• If the strip of paper tears when drawn in, then the gap is too small. As a
result, tension may develop in the power train as well as premature wear of
the bearings in the clutch and motor.
• If the gap is too large, the motor pinion may slip. The result would be jerking
in the drive and premature wear of the gear wheels.
• To correct the gap, loosen the motor retainer screw and shift the motor accordingly.

. Restoring the transmitter/receiver link

The transmitter and receiver are already correctly preset at the factory and can be used immediately. Restoring the link is
necessary only after changing the receiver and transmitter or to rectify an error.
Carry out the following procedure to restore the link:
> Switch off the transmitter.
> Plug in the binding cable into the connection for Channel 3 (Bind) on the recei-
ver.
Connect the rechargeable battery to the speed controller.
>
The LED on the receiver starts blinking.
> Press the bind button on the transmitter and hold it down, while you switch the
transmitter on.
When the LED on the receiver stops blinking, the binding is completed.
>
> This may take about 5 seconds.
> Release the bind button on the transmitter and detach the binding cable from
the receiver.
Check the functioning of the servos and the range of the remote control system.
>
> If the servos do not react correctly, repeat this procedure.

. Regular checks

Check:
> The model and the transmitter for any visible damage
> To be sure all the screw connections are tight;
during operation, parts and screw connections may become loosened through motor vibrations and shocks.
To be sure that all the turning/moving parts move smoothly;
>
> Plug connections for contact and cables for secure installation
> The snugness of the link lever and the servo arm on the servo shaft
> The charging level of the transmitter and rechargeable drive batteries
The symmetric adjustment of the shock absorbers of one axle
>
> The condition of the tyres

. Regular work

Changing tyres
The tyres are glued onto the wheel rims at the factory to secure them from jumping off the wheel rims and from slipping.
For this reason, in most cases the wheel realm also has to be changed when a tyre is changed.
Cleaning
> After each trip, clean the model of dust and soiling with a rag and a brush, or use compressed air.
> Also dry the vehicle thoroughly if you have driven on wet ground or in bad weather.
> Pay special attention to the wheel bearings. Take the wheels off occasionally and clean the ball bearings of dust and depo-
sits.
> Also clean the cooling ribs of the electric motor thoroughly.
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