

| Subject: | Re: Setting E-brake causes adjuster to adjust? Hot Drums. |
| From: | Neil N |
| Date: | Sun, 22 May 2016 20:14:52 -0700 |
Thanks for the link. That's the other thing I paid attention to. Heat at the bearings. The area at near axle nut hardly even felt warm but then that doesn't indicate a whole lot given your brake drum comment. I was ever vigilant of excessive bearing heat given that it was my first time torquing those big nuts down. And, they're likely the original bearings. The last thing I want to do is ruin good parts but I may just drive the bus and see what happens. I'll do what I can first though. The drums never got hot enough to make the shoe linings smell funny or create expensive smoke. Neil. On Sunday, May 22, 2016, Dennis Haynes <d23haynes57@hotmail.com> wrote: > The tool you want is common and anyone doing drum brakes should have one > like this: > > http://www.amazon.com/AMPRO-T71558-Brake-Resetting-Gauge/dp/B00A8FOEFE/ref=sr_1_1?ie=UTF8&qid=1463971144&sr=8-1&keywords=brake+drum+gauge > > Measuring temperature at the face of the drum will be very misleading. > There will also be some heat from the bearings. > > Dennis > > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com > <javascript:;>] On Behalf Of Neil N > Sent: Sunday, May 22, 2016 2:56 PM > To: vanagon@GERRY.VANAGON.COM <javascript:;> > Subject: Re: Setting E-brake causes adjuster to adjust? Hot Drums. > > Very helpful info Dennis. Yes my thought was that IF I remove material at > shoe metal, I'd do so at shoe bottom. Regardless, doing so would be a last > resort. > I'm loath to remove any material but want to achieve the 1.5 mm Bentley > spec. > I'll try to make a better tool for measuring mounted shoe diameter and > drum ID but testing shows I'm getting constant drag. > > I'm not certain my infrared "gun" is getting accurate readings via the > hole in wheel. > Time taken to remove a wheel may not allow the drum to cool that much? > > A quick search on the 'net indicates that 100º F is not that hot for drums > *after* use. > Some see 300º F after hard test braking. > But sustained temps above ambient, well...... > After my first bought of testing, the drums did show what *might* be > slight heat damage as did shoes. I cleaned up the drums and shoes. There is > no brake pulsing as it was when parts were new. > > Image of possible heat damage to drum and shoes. > > Drum http://tinyurl.com/zevgfs9 > > shoes: http://tinyurl.com/gtc76n6 http://tinyurl.com/jvec8vg > > "cleaned up" shoe http://tinyurl.com/jbg34xe drum after light emery > cloth: http://tinyurl.com/zbafhuu > > On 5/22/16, Dennis Haynes <d23haynes57@hotmail.com <javascript:;>> wrote: > > If you do insist on grinding take it off the bottom. Looking at the > > wear pattern you showed you need to let the shoes seat and then you > > will have room. Back in the days of manually adjusted shoes we set > > them for just a touch of drag to get them seated. Disc brakes drag all > > the time. Keep in mind that when you do use the brakes, it takes some > > time for the heat at the drum-shoe interface to travel to the outside. > > > > If the wheels turn free after releasing the handbrake you are probably > > good to go. > > > > As for the handbrake pushing the brakes out even with the pedal down, > > yes that is normal especially on new shoes. Pressure to the rear > > brakes is regulated. With the van raised in the rear the regulator > > kicks even even further as it thinks the van is nose diving. It works > > both on inertia and angle. Using the handbrake will push the shoes out > > and with them not seated that will wedge,, distort the drum, etc and > > move out letting the brake pedal sink a bit more. I just did a van > > with the GoWesty HD drums and it is amazing how different the > > handbrake and service brakes work. Now installing the front big brake > kit on that van. > > > > Dennis > > > > > > -- > Neil n > > Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca> > > 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy> > > 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/> > > Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay> > -- Neil n Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
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