Parrformance Posted August 20, 2018 Report Share Posted August 20, 2018 Well here goes, the park brake on the drivers side front tandem is hanging up. I need to cycle the park brake off and on to get the pads to release from the drum. Drives fine once they release. May I ask what I should check first? 2006 Volvo VNL 780, " Arvey" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift 2003 Jeep Wrangler Rubicon 2010 Forest River Coachman Freedom Express 280RLS Jackalopee Link to comment Share on other sites More sharing options...
Hewhoknowslittle Posted August 20, 2018 Report Share Posted August 20, 2018 First I would block wheels, have air tanks full. Then release parking brake, crawl under truck and see if slack adjuster is in full retract position, you can check other slacks to compare travel, if not retracted, see if s-cam is holding it from moving. Just a start of things to check but do this first. Roger Link to comment Share on other sites More sharing options...
Parrformance Posted August 20, 2018 Author Report Share Posted August 20, 2018 10-4, I will start there. The previous owner added this front drive axle to the truck, it was used, may need to be looked over a little. 2006 Volvo VNL 780, " Arvey" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift 2003 Jeep Wrangler Rubicon 2010 Forest River Coachman Freedom Express 280RLS Jackalopee Link to comment Share on other sites More sharing options...
Hewhoknowslittle Posted August 20, 2018 Report Share Posted August 20, 2018 If you find any worn parts are broken return springs on the shoes it would be time to do a complete brake job on that front axle just as preventative maintenance. Most people overlook the slack adjusters and the S cams but they play a vital part in stopping the truck. Link to comment Share on other sites More sharing options...
Parrformance Posted August 20, 2018 Author Report Share Posted August 20, 2018 Watching a video on push-rod travel, slack adjustment now. May need to do a six pack adjustment, will likely need to grease the slack adjusters as well. been about a year since I greased them last. 2006 Volvo VNL 780, " Arvey" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift 2003 Jeep Wrangler Rubicon 2010 Forest River Coachman Freedom Express 280RLS Jackalopee Link to comment Share on other sites More sharing options...
noteven Posted August 20, 2018 Report Share Posted August 20, 2018 Make sure pliable grease is present in the S cam shaft assy as well. Not the old dirty chocolate cake icing variety grease 😀 "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
Parrformance Posted August 20, 2018 Author Report Share Posted August 20, 2018 Will do. 2006 Volvo VNL 780, " Arvey" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift 2003 Jeep Wrangler Rubicon 2010 Forest River Coachman Freedom Express 280RLS Jackalopee Link to comment Share on other sites More sharing options...
MsChrissi Posted August 22, 2018 Report Share Posted August 22, 2018 Before we put the fenders and body on the back, at least one wheel would lock up and be difficult to break loose. Since we put the fenders and body on the back plus a piece of 4x8 plywood covering the wheels (radiused to fit under fender lip) and keeping rain and moisture out of the wheels and brakes, we do not have lockups an more. Link to comment Share on other sites More sharing options...
Parrformance Posted August 22, 2018 Author Report Share Posted August 22, 2018 Perhaps I caused the condition while pressure washing. I have a deck over the wheels, but not a water tight deck. 2006 Volvo VNL 780, " Arvey" Volvo D12, 465hp, 1650 ft/lbs tq., ultrashift 2003 Jeep Wrangler Rubicon 2010 Forest River Coachman Freedom Express 280RLS Jackalopee Link to comment Share on other sites More sharing options...
MsChrissi Posted August 22, 2018 Report Share Posted August 22, 2018 So far all we know is they do not like to sit wet. It would hang up every time before we closed things up Link to comment Share on other sites More sharing options...
beemergary Posted August 29, 2018 Report Share Posted August 29, 2018 Lots of good info. I had mud dobbers plug exhaust port of relay valve before and made for slow release. Link to comment Share on other sites More sharing options...
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