Disc Brake Clearance Issues  

Gwendolyn, Thanks for the reply. I've also sent you an email with pictures. No brakes where on this trailer, it has a 3500lb axle (2 3/8" diameter) with idler hubs, similar to your e65GR axle. No stamping or numbers on the axle, but given its diameter and trailer I.D. I'd call it 3500LB. This trailer is all stock with no modifications, yet. The caliper itself clears the frame and spring with room to spare, a good 1/2" away. just the caliper pins are an issue. Per the pictures (sent by email), You can see the lower caliper pin is pressed against the axle spring. The upper pin, I put a straight edge on the frame to the pin to show the amount the pin would be into the frame. Full spring deflection would put it about 1 1/2" up the frame. Theres no room to move the caliper bracket out, as it sits very close to the disc already. My thoughts to mount this system; per the pictures, clock the bracket down to move the pins down and below the frame under full spring deflection, this would also clear the bottom pin. Not my favorite option as this would require drilling new mounting holes in the bracket with only 3 mounting bolts at the flange and require removal of the caliper whenever bleeding the brakes, as the bleeder screw would be below the top of the piston cup. My other thought is to cut the caliper pin and pin bushing down 1/2". there's plenty of threads on the pin. This would put the pin close to flush with the caliper and clear the frame and spring. I can still access the pin because it's both 1/2" hex head (like a bolt) and 5/16" allen head socket. It also would only reduce the contact area of the bushing and caliper by less than 3/8", as there's a 1/4" collar on the pin the same size as the bushing. Looks like it would also require dropping the spring to access the lower caliper pin, not a big deal. Gwendolyn, any ideas you may have would be greatly appreciated. Glenn