The red piece that goes around the axle shaft you speak of is nothing but the caliper bracket. The second pic I posted is what you most likely need.
At the top and bottom of the caliper are those pieces of metal that have two flats to them and rubber between them. Drive them out with a punch and hammer. Caliper will come off. You appear to have a 86-94 front D60 from what I can tell from the pics.
Image of the hardware and the slides you need to drive out.
However the calipers dont stretch that year span, 89-94 and 86-88 are different part numbers