97 F-250 OBS Parking Brake Problem - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 04-16-2012, 04:31 AM Thread Starter
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97 F-250 OBS Parking Brake Problem

I have a 97 F-250 OBS with rear drum brakes. I do not know anything about drum brakes but haven't researched yet either. I am running in to a problem where the parking brake isn't working. I can push it all the way to the floor and still nothing. This is a problem when I am backing my boat in the water and have to put it in park to let the boat of the trailer. When I get back in the truck, it feels like I am raping the transmission and steering column putting it back in drive. Is there an adjustment on the drum brakes for the parking brake. Any advice is appreciated. Thanks.
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post #2 of 6 Old 04-16-2012, 10:54 AM
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You may need to manually adjust the rear brake shoes. That generally helps the parking brake a bunch. If you do that and still no improvement, you may need to replace the PB cables. If you do, go with the factory OEM cables (I did not have good luck with aftermarket units, no problems with factory ... and the price was comparable). Cheers!

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post #3 of 6 Old 04-16-2012, 12:33 PM
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Get under the truck and observe while an assistant works the pedal / release. There are four cables -- a front cable coming right from the pedal thru the floor/firewall and terminating just below the driver; an intermediate cable running alongside the left frame member, connected to the front cable with a cylindrical metal sleeve; two rear cables, one going to each wheel, connected to the intermediate cable with a metal "splitter" connector. Just look-see what moves, what doesn't as your assistant presses the pedal and pulls the release. That should clue you in as to what cables, if any, are broken or out of adjustment.

(Might wanna chock the wheels while you're under there.....)
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post #4 of 6 Old 04-17-2012, 05:40 AM
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Sounds like its time to smoke through the rear brakes and adjust the cable for the e brake. If there are no pads back there you won't have any ebrake pedal. Also I wouldn't doubt if the cables are a little stretched out from years of use. Take some slack out of the cable with the adjuster nut and see if that helps.

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post #5 of 6 Old 04-17-2012, 05:46 AM
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If you have to manually adjust your cables. Jack the rear tires of the ground. You will see a little black plug on the bottom of the backing plate (plug may be missing). You can buy the adjusting tool for a few $$ at any auto parts place or you can use a screwdriver. I always find it easier with the tool. When you put the tool in the slot you will feel a little gear. Start tightening it by pulling the tool handle up so the tip of the tool is going down.(im pretty sure its that direction you will feel little resistance going the proper direction) Spin the tire until you feel/hear the breaks grabbing and then go to the next wheel. Drop the veh down set the e brake. and then take for a test drive and recheck.
If you have to replace cables someone on here probably has a easy way but i had a heck of a time getting the second cable on.
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post #6 of 6 Old 04-17-2012, 07:59 AM
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do what madpogue suggested. but after that jack up one side at the rear remove the tire and the drum. it should slide straight off. inspected the pads and again have your assistant work the e brake and make sure that the cable pulls on the rear show which then fore both shoes outwards. replace what it broken

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