The installation is for HO-Scale Fleischmann 4430 BR614. It uses T1 decoder and was performed by Ric Bogart of Osborne Park W A, Australia
This is a Fleischmann DMU Model from the late 70’s and can be easily converted to DCC (see exploded view below)
The Roof is held on with plastic spring clips, care must be taken when removing and installing the roof piece to not break these.
Power collection from the track is from both Bogies and all wiring goes to the circuit board in the top of the DMU unit.
Once the Motor has been removed from the unit (as per Fleischmann’s Instructions)
Wires can be unsoldered and the motor is then disassembled. Remove the Brush Holder Clips and the Motor Brushes. Then unscrew the motor side cover and remove.
The power collection piece can be left in place. Remove the two cokes also as these will be in the way when cutting the circuit board.
These Models have a Motor Side panel which is best described as a Circuit board, Insulated on the back.
When cutting the metal of the Motor Side plate I used a Hobby drill like a Dremmel
With a tiny cutting or grinding disk. Take care not to cut to deep!
This will isolate the motor body from the –ve side of the motor.
(See Next Picture )
Note : The two cuts
Test with a multi-meter to make sure you have isolated the three sections .
Now it is time to resolder the wiring on the motor .
Grey wire from the decoder to the –ve motor connection (see Previous Picture).
Orange wire to the +ve Connection.
Resolder the blue wire from the top circuit board.
Add the black wire and solder in place.
Reassemble the motor bogie and put back in place
The top cicuit board must also be modified (see below) then reassembled.
Now the rest of the wiring can be cut to length and soldered into place
Black wire from the decoder to the Left side rail power supply
Red Wire to the Right side rail Power supply
White to the forward headlight
Yellow to the Tail light connections
The blue wire was not used to provide power for the headlights ,the existing connection through the body of the loco was utilised to give half wave power
Clip the roof back on and the 614 is ready to go