Installing a DCC decoder in a Bachmann Class 03 Shunter

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This page was last updated 2 July, 2014

 

Bachmann 03 Shunter

Before installing chip into any loco it is advisable to check the current being drawn by the loco. You should test the current drawn when the loco is stalled to find the peak current and select a decoder that will cope with that maximum current requirement.

This installation is very straightforward and uses a TCS EUN651 direct plug 6-pin decoder.

Underside of Bachmann Class 03

Removing the body is a two stage process.

First gently lever out the two couplings.

Bachmann Class 03 body fixing

Once the couplings have been removed you will see the two screws securing the body to the chassis. Undo the screws and gently pull the body away from the chassis. Be careful not to break any of the fine detailed parts on the body shell whilst doing this.

Bachmann Class 03 decoder socket

Installing a decoder in the 03 is really very straightforward. Once the body has been removed the location of the socket for the new DCC chip can easily be identified at the rear of the loco. Gently remove the small PCB in the NMRA socket by pulling it out.

Bachmann Class 03 with decoder

Insert the 6-pin decoder into the socket. Be careful here - there are two lines of six-pin female sockets. Ensure that the decoder is inserted into the top line of sockets and that it is the right way up. If you insert the decoder into the bottom row of sockets the loco won't work.

6-pin decoders should have a small mark next to the end of pin 1 and this should be on top at the right-hand side of the socket. The decoder shouldn't need insulating as it isn't located close to any chassis parts, sitting well clear of the chassis.

Test and program the loco before fitting the body. Refit the body and check that the cab light works using function 0.

 

 

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