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Old 02-15-2012, 10:50 PM   #1
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Parking Brake

Well, here goes!! Our motorhome had decided that he doesn't want to hold his position when he is pointed down a hill and is in Park.He wants to roll ahead. He holds just fine when he is pointing up the hill. Doesn't roll backwards. There has to be an adjustment somewhere, right? "He" is a 1997 Pace Arrow Vision, 35 foot, workhorse chassis, and has a tag. Also refered to as "Pain".
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Old 02-15-2012, 11:41 PM   #2
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Suggest you visit Contacting the AutoPark Library and do a search on the Workhorse section, Workhorse Custom Chassis Motorhome Forum - iRV2 Forums, looking for Auto Park issues.

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Old 02-16-2012, 09:21 AM   #3
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Quote:
Originally Posted by amyfonta View Post
Well, here goes!! Our motorhome had decided that he doesn't want to hold his position when he is pointed down a hill and is in Park.He wants to roll ahead. He holds just fine when he is pointing up the hill. Doesn't roll backwards. There has to be an adjustment somewhere, right? "He" is a 1997 Pace Arrow Vision, 35 foot, workhorse chassis, and has a tag. Also refered to as "Pain".
FWIW, Your Chevy-GM (not Workhorse) chassis is a P32, which uses the J71 Auto Applied Parking Brake (AAPB) which uses a spring to automatically apply brake shoes inside a drum mounted on the drive shaft behind the tranny. Apparently, the shoes (pads) are worn down enough to allow movement, and they may need to be replaced. However, other factors may also need to be addressed because these pads are not "intended" as "wear" items like normal service brakes. Your GM 4 speed tranny does NOT have a Park Pawl, as do most cars, and therefore this J71 AAPB is your ONLY means of preventing a roll-away situation when "parked" on an incline. It is very important that you get this thing repaired ASAP. SOME of these units MAY be adjustable to a slight degree, and that MAY tighten up the slack enough to restore the PB function, but you really NEED to find what caused the shoes to become worn in the first place.

If you follow the previuos suggestion you'll find lots of info you can read about these AAPB devices, but your best source of FREE and accurate info about what you need to know will be via an email to:

oldusedbear@oemys-performance.com

Roger has helped hundreds of P32 owners with all sorts of issues on their J71 AAPB, and will be glad to help you determine how to proceed.
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