Re: Pulsating brakes
Jack the truck up and put jack stands under all 4 corners (under the axles, not the frame). Take the brake rods loose. Front brake rods at the wheels, rear rods at the cross arm. Tighten the adjusters one click at a time as you spin the wheel by hand until they just start to grab, then back off 1 click. The drums that need to be turned or replaced will "pulse" when you spin by hand. Drums that are OK will be smooth all the way around.
When all 4 are adjusted properly, then adjust the brake rods. You will need the brake adjustment tool to hold the brake pedal at the correct points. The procedure is found in "The Red Book"
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