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I have a 90' Nissan pickup and would like to swap the rear drums to rotors from a pathfinder of the same year. Just getting information before I start taking it apart.
My friend you are opening a can of worms
remenber that the shafts and rear end are where everything goes and also the emergency brakes are... I would think twice before proceeding ( But what do I know)
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I would say your problem is still possibly brake related because of your experience with clamping the rear lines. You have changed everything out in the system except the Master Cylinder and the actual brake lines. Never heard of Master Cylinder causing symptoms you describe, but I am only a shade tree mechanic. My only other suggestion would be to verify your rear tires are properly balanced. There is very little weight in the rear of a pickup and unbalanced tire(s) would exhibit the symptom in any car, but most especially in the rear of an unloaded truck. This is a tough one! Keep us posted on your progress in getting this one fixed.
If you can not get them off there could be a couple of problems.First,they could be stuck on the wheel studs.Take a large soft faced hammer and strike the drum at 6,12,9, and 3 o'clock.Repeat this until it starts to move.It may also have a rust ridge to the back of the pads on the drum.This also requires brute force.Good luck. P.S. put the wheel nuts back on to protect the threads as you beat the drum.
Sometimes brake drums will develope a ridge on the edge of the drum from the brake shoes wearing into the drum. There is usually an slotted access hole in the backing plate that you can use a screwdriver or brake tool to adjust the "star" adjuster wheel to allow the shoes to move inboard enough to get the drum off.
if they are disk brakes, they are not adjustable. if they are drums they should auto adjust. if they are not, then there is a problem that you have to pull the tire, then the drum, to diagnose it. you may have to disassemble the brake shoes and springs, and clean and lube the self adjusters
are your brake pads squeezing the rotor? are your brakes disc or drum? in order to replace pads on disc brakes you need to unbolt the caliper. If you have drum brakes make sure your car is secured and make sure your parking brake isn't on...
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