Hi guys, I need some help diagnosing a problem with my D4 7U #1894. The right side brake pedal goes to the floor and does not help turn the tractor. The spring does return the pedal to the proper location. I removed the rectangular panel under the seat / tool box area and put about 15 clockwise turns on the adjuster nut. This adjustment did not change anything. I could see the brake band move when I pushed the pedal down, but it didn't move much. I also removed the inspection cover at the rear but did not see anything abnormal inside. Any ideas?

Sounds like time for you to finally remove the seat tank and re-position it after repairing the brakes...
Pin may have fallen out or band rotted away as Neil mentions. Do not forget to adjust from the bottom as well should you replace the brake bands. JM

Thanks Neil and Juiceman. I hope I don't need to pull the top deck off!

    I found the problem with the right steering brake that was not working. I removed the floor board, then the cover plate and found the pin, washer and cotter pin had slipped out. The amazing thing was that they had not fallen into the "abyss" and was able to fish them out. The other amazing thing was the cotter pin was NEVER split open to keep the pin in place. The cotter pin looked brand new! Anyway, I'm back in business just in time for our June show. Special thanks to Crawler Dollars for making the trip with me to do some recon on the problem. Part

Loose nut above the seat. Great! The bore scope was a great idea. JM