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wdtom
01-13-2005 18:11:58
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Re: WD45 brake question in reply to Nation Brimm, 01-13-2005 09:52:11
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Brakes on a WD or 45 (same) can be a hassle if the pin in the bottom that holds the shoes in is rusted in. Under the axle there is a capscrew that holds a little metal piece that fits into the neck of a (about) 3/4" pin. remove the screw and metal locking piece and remove the pin. If you can't well now the fun starts. You can tap it in to break if free, but don't tap it in much or you will have even more fun. try prying, twisting with vise grips, prying and twisting at the same time. When you give up, drill and tap it for a 3/8-24 thread and pull it out with a good grade cap screw or stud, a socket or short section of tube or pipe and washers. To drill and tap, first grind off a little from the end of the pin to get through the case hardened surface. Then center punch and pilot drill then tap drill, then tap. Do not break the tap off in the pin. Use a new sharp tap and cutting fluid to avoid this. Drill and tap deep enough to get at least 1/2" of thread below the neck. The neck may break off. If you don't have to do all this to get the pins out do it after you get them out to make sure you always will be able to get them out. The castings the pins go through are almost 2 inches thick so you can go quite deep with a hole and thread before you get past where the pin is supported and noticeably weaken the pin. There is the axle housing, then the differential housing so you can drill at least 1" deep, and probably a lot more, been a while since I did it. Anyway, after you get the pins out take the covers off the top, or take them off before and put penetrating oil on the pins from the top. Don't worry about oiling the brakes, you are replacing them and you can clean off the drum later. You have to unscrew the linkage to the brake pedals, back off the adjustment screw on the back of the differential, (setscrew with locknut), and take off the adjustment nut on top. If you have a manual it will give you the adjustment procedure. If not post here or e mail me and I will look it up for you. Basically you screw in the back screw until the shoe touch the drum, back it off a touch, take up the top, then set the length of the rod to the pedal. You can probably get it working with out the exact length of the rod and exact adjustment, but when you do it right the brake pedal lock works right when you are done along with the brakes being even and working right.
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