|
|
06-04-2019, 01:46 PM
|
#1
|
Senior Member
Join Date: Jan 2019
Location: Granite Bay CA
Posts: 109
|
Help with parking brake
My parking brake won’t hold. 2002 7.3 E-350 EB.
Any advice? I looked through some old threads but didn’t see anyone who had successfully solved their problem or written about their solution. Thanks in advance!
|
|
|
06-04-2019, 02:11 PM
|
#2
|
Senior Member
Join Date: Sep 2015
Location: Sandy, Utah
Posts: 418
|
|
|
|
06-04-2019, 02:54 PM
|
#3
|
Senior Member
Join Date: Jan 2009
Location: Corvallis, OR
Posts: 5,300
|
New parking brakes shoes + remove any glazing from the drum inside of the rotors. Scotchbrite wheel works fine. Soft organic shoes are best for parking brakes, which should be the cheapest option anywways. Then properly adjust the star wheel. For even better holding, bed them in. Just like regular brakes but at low speeds instead. Then re-snug the star wheels again after doing this.
__________________
2000 E450 dually V10 wagon
|
|
|
06-05-2019, 08:47 AM
|
#4
|
Senior Member
Join Date: Jan 2019
Location: Granite Bay CA
Posts: 109
|
Quote:
Originally Posted by carringb
New parking brakes shoes + remove any glazing from the drum inside of the rotors. Scotchbrite wheel works fine. Soft organic shoes are best for parking brakes, which should be the cheapest option anywways. Then properly adjust the star wheel. For even better holding, bed them in. Just like regular brakes but at low speeds instead. Then re-snug the star wheels again after doing this.
|
Thanks for the feedback. Can you explain what the star wheel is?
|
|
|
06-05-2019, 08:52 AM
|
#5
|
Senior Member
Join Date: Jan 2009
Location: Corvallis, OR
Posts: 5,300
|
The star wheel is the slack adjuster on brake shoes. All drum brakes (besides air brakes) have them. On primary drum brakes, there is also an arm which automatically moves the star wheel to take out slack. But parking brakes (and most trailer brakes) don't have this, so you have to adjust the slack out manually. There is a slot on the backing plate to reach this, but it's a PITA and usually easier to pull the rotor off and do it from the from.
__________________
2000 E450 dually V10 wagon
|
|
|
06-05-2019, 10:09 AM
|
#6
|
Senior Member
Join Date: Mar 2013
Posts: 4,234
|
My parking brake didn't work worth a dam (well, not at all actually) until I replaced the rotor and shoes (with the integral parking brake drum) , and freed up all the rusted internal parts. The adjuster, springs and little parts rust quickly, but can usually be cleaned up pretty well. With new shoes and properly adjusted, it worked ok and would hold on a moderate hill, but it wasn't long before I forgot it was on, and smoked the shoes. I've done this more than once, but a quick scuffing of the drum and shoes, along with another adjustment will fix them up. It's a bit of a pain to adjust them, just finding and removing the rubber plugs was a chore the first time, requiring a flashlight and mirror. I find it easier to remove the rotor, clean everything up, scuff the shoes and drum and then adjust the shoes until I can barely slip the rotor back over the shoes. After that, it's just a few turns of the adjusting wheel to get them to the point where you can't turn the rotor, then back off the wheel a couple of clicks until the rotor just turns. To break in new shoes, or well scuffed old ones, going a moderate speed (20mph?) apply the parking brake gently a few times to get the shoes heated up, then allow them to cool without applying them.
https://www.wagnerbrake.com/technica.../break-in.html
__________________
Arctic Traveller
KC6TNI
2001 GTRV
Advanced 4wd
Agile Ride improvement package
|
|
|
06-05-2019, 10:19 AM
|
#7
|
Senior Member
Join Date: Jul 2013
Location: So Cal
Posts: 4,045
|
Turn the star-wheel until the drum binds..or barely slides over the shoes when it's re-installed........then back off the star wheel a handful of clicks until the drum spins freely....done.
*Edit: ...Posted this before seeing artictraveller's post above....same thing...and yup the star wheel is behind the rubber plug in the backing plate.
__________________
2008 E350 RB passenger 4WD SMB penthouse
2013 KTM 350 EXC
2008 KTM 250 XCF-W
2003 Honda Element
|
|
|
06-05-2019, 10:41 AM
|
#8
|
Senior Member
Join Date: Jan 2019
Location: Granite Bay CA
Posts: 109
|
Quote:
Originally Posted by carringb
The star wheel is the slack adjuster on brake shoes. All drum brakes (besides air brakes) have them. On primary drum brakes, there is also an arm which automatically moves the star wheel to take out slack. But parking brakes (and most trailer brakes) don't have this, so you have to adjust the slack out manually. There is a slot on the backing plate to reach this, but it's a PITA and usually easier to pull the rotor off and do it from the from.
|
I went to Napa and they didn’t know what to sell me. On my 2002 7.3 does anyone know what wheels the parking brake works with? One front? Both front? Both rear? Also, is it rotors or drum? Any insight is much appreciated.
|
|
|
06-05-2019, 11:09 AM
|
#9
|
Senior Member
Join Date: Jan 2009
Location: Corvallis, OR
Posts: 5,300
|
The parking brake is on both rear wheels. They are "drum in hat" which means the parking brakes are drum brakes that are inside the service brakes, which are disc. When you order pads, you have to ask for "shoes". Napa does have them, that's where I got mine.
https://www.napaonline.com/en/p/RTST...earchIndex=App
BTW - guessing by your questions, you haven't tackled much brake work before. I'm not sure this is the vehicle you want to practice on, since 8,500 rolling into something will cause much more damage than 3,000 pounds. At the very least, you might wan to buy a repair manual. I like AllData but there's other good ones too. https://www.alldata.com/oe-info-student-and-diyer
__________________
2000 E450 dually V10 wagon
|
|
|
06-05-2019, 11:11 AM
|
#10
|
Senior Member
Join Date: Mar 2013
Posts: 4,234
|
The parking brakes are only on the rear wheels. The only parts normally needed to be replaced are the shoes, unless the rotor/drum is scored or rusted. With rear disc's, there is a drum as part of the disc. It's like a hat attached to the rotor, with the shoes inside. If you need new shoes, just take the old ones down to Napa to be matched.
__________________
Arctic Traveller
KC6TNI
2001 GTRV
Advanced 4wd
Agile Ride improvement package
|
|
|
|
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|