Updated 15.06.2009
I have rebuilt Märklin 00380-1,
3099 and 34988
The photo is from 34988, 3099 is identical except for the colour.
Decoder:
I installed the decoder in an old 6090 decoder cover, glued to the weights in
the tender. The pick-up shoe is installed under the tender and light
guides from NoHAB Di3 (Märklin part number 215230) are installed in the two
lower lamps. A small two-pole SIL (Single In Line) socket is glued to the tender floor, holding
the 28 Volt T1 bulb for the rear light.
The front lamps are replaced by small grey bulb sockets (604180). Also here a 28
Volt T1 bulb.
The noise suppressors are installed on a small experimental printed circuit board, which is installed where the
reverse unit used to be. Also the brown ground wire and the brown/red wire
for f1 are soldered to the pcb.
Decoder functions:
f0 = light with directional change, three in front, two rear
f1 = interior light, driver's cabin (not connected yet)
f2 = rear light on also in forward direction
f4 = acceleration and braking delay off
Motor:
Installation of the motor itself is very simple. You need to remove the screw
for the left hand control rods to access the lower motor cover screw. It
is not necessary to remove the rods. Carefully bend the rods aside to
access the lower motor cover screw.
Notice the flat area above the rotor shaft. Approx. 1 mm have to be cut off to
make the locomotive body fit. I used a sharp knife.