I've been asked how I got the Dapol Terrier to pieces and as it is easier to explain these things in pictures I thought I would put a few here:

1. The body is separated from the underframe by releasing four clips on the underside of the footplate.

The body (already removed) is attached to the footplate here.

2. The footplate is connected to the rest of the underframe by (1) a clip underneath the resistor board and (2) two clips either side of the worm gear. Unclip the first from above then gently splay out the footplate near the worm gear to release the others.

The clips that hold the underframe to the footplate. There is another clip on the other side of the worm gear.

This is where the clips identified in the above picture attach to the footplate.

3. The brake gear is clipped to the wheel block at the front and back where indicated. Gently(!) bend the front and back of the combined unit and the brake gear will come away. If you did it gently you won't need to extricate the wheel block from the dog bowl.  At least the wheels don't just drop out.

Gently spring the underframe apart at the points shown to release the brake gear.

A quick update: The crank pinks are a push fit and can be removed by teasing them gently out of the hole. The coupling rods are very thin so take care not to damage them doing this.

The wheels simply un-clip from the frame with a small amount of upward force.

More after our appointment with the lathe at Saturday's area group meeting.