Union Mills Class J39 (New Chassis) DCC Conversion

Mistakes may damage your locomotive, controller or other accessories. Use a multimeter to make absolutely sure you have completely isolated the motor from the track before testing. Always use the Programming Track for testing. Our guides are provided for reference only, and you proceed entirely at your own risk. Unsure about something - try our DCC Conversion Service instead.

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This guide covers the Union Mills Class J39 models with the newwer tender drive chassis arrangement, including:

• Union Mills Class J39 BR Black 64736

This later version uses a dual shaft motor, powering only the outer tender axles - the middle axle is unpowered. A small decoder can be fitted inside the tender without milling, for detailed instructions on how to do this, follow the Union Mills Class T9 guide.

The older tender drive can be identified by several visible cogs on the underside of the tender rather than just two. If you have this model, refer to the Union Mills J39 (old tender drive) page.

You can see a comparison between the versions of this model in the photo below:

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