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07-12-2018, 08:13 AM
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#15
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,321
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Needs a clean-up and repost.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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07-12-2018, 09:47 AM
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#16
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,901
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Quote:
Originally Posted by speed racer
Not knowing the year it has drum brakes on the steering axle and the backing plate is missing.
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There is NO backing plate on air braked equipped coaches/trucks.
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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07-12-2018, 01:23 PM
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#17
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Registered User
Join Date: Apr 2018
Posts: 1,459
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Quote:
Originally Posted by FIRE UP
There is NO backing plate on air braked equipped coaches/trucks.
Scott
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Can't say about a coach, but some trucks have them. I did enough off-road work that if they where there I would remove the bottom half. They do not seal everything out, and I wanted anything that did not belong inside to have a easy path out.
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07-12-2018, 02:51 PM
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#18
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Senior Member
Thor Owners Club Ford Super Duty Owner
Join Date: Jul 2011
Posts: 3,790
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After the postings of the more experienced people I'm inclined to go with no crack but would really need to touch the coach to be sure.
Moving a bit away from the topic but staying with the OP's image, and for my own education, is that brake shoe hanging outside the edge of the top half of the drum assembly (outlines in red)? My drum brake experience is limited to light vehicles with hydraulic brakes and always with a backing plate so in my mind that's not even possible.
__________________
2006 Hurricane 31D built on a 2006 Ford F53
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07-12-2018, 03:09 PM
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#19
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,901
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Quote:
Originally Posted by Sweetbriar
After the postings of the more experienced people I'm inclined to go with no crack but would really need to touch the coach to be sure.
Moving a bit away from the topic but staying with the OP's image, and for my own education, is that brake shoe hanging outside the edge of the top half of the drum assembly (outlines in red)? My drum brake experience is limited to light vehicles with hydraulic brakes and always with a backing plate so in my mind that's not even possible.
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No Sir, that brake shoe is exactly where it's supposed to be. You are right in the fact that on much lighter braking systems, i.e. cars and pickups etc. the brake backing is what retained the brake shoes. I thought it kind-a funny too when I was first hired on the FD waaaaay back in '80 and, I was witnessing a brake job on one of our fire trucks. It had no brake backings either. And all the fire trucks I was on for the next 30 years didn't have any either.
But, in these coaches, and air brakes especially, there is no backing plates. There are specific brackets that you cannot see here, that are retaining those shoes. And those brackets are seriously strong. They're not about to let those brake shoes "wander" any place they're not supposed to be.
I too would like to see the OPs picture retaken at a much closer zoom in. From the original pictures, it sure looks like a crack. But, as time, and this post, rambled on, it became a bit clearer that the "crack" was not a crack at all. Pretty deceiving the old grime is.
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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07-12-2018, 04:02 PM
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#20
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Senior Member
Join Date: Jul 2014
Posts: 35,349
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Quote:
Originally Posted by FIRE UP
There is NO backing plate on air braked equipped coaches/trucks.
Scott
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Plenty of trucks have front backing plates. We were always bending them to get the stone to fall out, so they stop squeeling.
Often while removing the plates, the bolts snapped, and we just tossed them.
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07-12-2018, 05:19 PM
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#21
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,321
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Quote:
Originally Posted by twinboat
Plenty of trucks have front backing plates. We were always bending them to get the stone to fall out, so they stop squeeling.
Often while removing the plates, the bolts snapped, and we just tossed them.
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Squealing stones pinched between the drum and dust shield just got a smack with a 2 pound hammer. Turned them to a bit of dust that would fall out.
Still waiting for a reply from the OP and maybe another picture.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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07-12-2018, 05:27 PM
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#22
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Senior Member
Join Date: Mar 2017
Location: Zebulon, NC
Posts: 5,208
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I stand corrected as to my grease being string of some sort. As to the crack, unless I could see bare metal, I would consider it as a crack and get it professionally and in person.
__________________
Kelly and Jerry Powell with Halo (Lethal White Aussie), Nash the Rat Terrorist, and now Reid, the "Brindle we have no idea puppy"
2020 Grand Design Solitude 390RK-R
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07-12-2018, 05:45 PM
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#23
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Senior Member
Thor Owners Club Ford Super Duty Owner
Join Date: Jul 2011
Posts: 3,790
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Quote:
Originally Posted by FIRE UP
No Sir, that brake shoe is exactly where it's supposed to be.
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Thanks.
__________________
2006 Hurricane 31D built on a 2006 Ford F53
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07-12-2018, 09:19 PM
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#24
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Junior Member
Join Date: May 2018
Location: Beaverton
Posts: 21
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if you zoom in at the bottom where the rod connects you can see the crack
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07-12-2018, 09:22 PM
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#25
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Junior Member
Join Date: May 2018
Location: Beaverton
Posts: 21
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It is in getting a generator leak fixed, tomorrow I will go clean it and get a better look/pix
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07-12-2018, 10:14 PM
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#26
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,901
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Quote:
Originally Posted by twinboat
Plenty of trucks have front backing plates. We were always bending them to get the stone to fall out, so they stop squeeling.
Often while removing the plates, the bolts snapped, and we just tossed them.
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Roger that, sorry for the incorrect info. Just never seen any on any of our fire trucks and or air braked coaches I've worked on. Thanks.
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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07-13-2018, 06:51 AM
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#27
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Senior Member
Workhorse Chassis Owner
Join Date: Sep 2007
Location: st.charles mo.
Posts: 1,482
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I made my Living for more than 40 years as a mechanic and most all trucks driven over the road had backing plates I agree that the fire equipment and almost all of the equipment that we had that wasn't driven on the roads didn't have backing plates but they are there to keep snow and road debris out of the drum.
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07-13-2018, 09:09 AM
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#28
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Member
Thor Owners Club Ford Super Duty Owner
Join Date: Jan 2009
Location: Sault Ste. Marie, ON Canada
Posts: 67
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In some cases backing plates are an option when ordering a chassis. i agree they are a good idea to keep out unwanted debree, snow and ice.
__________________
Jim & Mara Gray
Bandit our cat
2004 34' Hurricane, 2010 GMC SLE
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