Installing a DCC decoder in a Vitrains Class 37 Diesel

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Last updated 5 January, 2017
Class 37 - removing the body

 

This installation is one of the most straightforward as the engine is DCC ready and there is plenty of space.

Before installing chip into any loco it is advisable to check the current being drawn by the loco.

There are no screws to undo in order to release the body. The body needs to be levered away from two lugs each side of the model. You can do this by getting your fingernail under the edge of the body to prise it away from the chassis. Do not use a screwdriver as you run the risk of damaging the bodywork and/or chassis. Bbeware of pressing on the glazing too hard!!

You will find some pieces of card useful so that once a little progress has been made the body doesn't just jump back into its correct position.

 

Class 37 blanking plug Location of pin 1

 

The loco is DCC ready, having a socket installed in the middle of the loco. There are two small dummy plugs in the DCC socket. Gently lever the dummy plugs out of the socket.

There is plenty of space inside the loco for any size of OO/HO decoder. This installation used a TCS DP2X-UK decoder.

Unfortunately Vitrains haven't thought to label pin 1!

 

Class 37 decoder installed

Make sure the decoder is correctly orientated before pushing it home into the socket. Having it the wrong way round won't damage the loco or the decoder, it's just that the lights won't work!

It is suggested that you do any programming of the decoder and testing control of the loco before replacing the body.

The body can be a little tight to get back on - just gently lever out the body a little where the lugs are located and snap back into place.

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