David – A few tips regarding SM brakes I’ve learned over the years: 1 – Make ‘em clean! Completely disassemble each brake assembly including the center actuating disc assembly. Wash in solvent (I recommend Brake Kleen aerosol brake cleaner or similar) to get off all the dust, oil, etc. you will find. 2 – Wire brush the actuating ball ramps and balls if required to get them clean. If the balls are rusty, pitted or otherwise damaged replace them. 3 – Scrape/wire brush the brake shaft splines. If there are burrs on the splines where the friction discs ride, use a small file to smooth them off. 4 – If the metal friction surfaces on the inside of the cover, etc. have glaze or scale on them use heavy sandpaper to clean them down the bare metal. 5 – If there is evidence of transmission oil leaking into the brakes along the spline shaft, replace the shaft seals now. (Seal replacement is easily accomplished without going inside the transmission). 6 – If the friction discs look at all questionable (worn, cracked, oil soaked, glazed) trash ‘em and replace with new. Otherwise sand the friction surfaces to remove any glaze before reinstalling. 7 – Before reassembly use just a touch of dry powder lubricant (graphic or moly powder) on the balls. And wipe a THIN coat of Nevr Seez or chassis lube onto the shaft splines. To little lube is better than too much! 8 – Finally adjust the pedal linkages per the manual. ---- Done correctly and the brakes should be able skid the tires on hard pavement with only moderate pedal pressure. Good luck!
|