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10-08-2009, 07:56 PM
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#1 |
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Registered User
 
Join Date: Sep 2009
Location: Upstate NY
Posts: 395
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Load Control
Hey guys newbie question here. I was looking to replace the brake lines on my truck and GMCPauls looks to have a nice prebent kit. I think I may have the load control...not sure. There is a lever looking part on the frame with a brake line going to it, and coming out of it and goes to the rear end.
Is this load control? How do I know if it works and if it doesnt can it be eliminated? Is there a real benefit to this system? Whats its function? Its an 85 K20 regular cab long box 4x4. Thanks for the help. Sarge
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1997 GMC Yukon Western Mid Weight Plow  |
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10-08-2009, 08:16 PM
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#2 |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,226
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Re: Load Control
Sounds like it. If it's what I'm thinking of it's a rear proportioning valve.
Brake line pressure to the rear brakes is reduced with no load (to help prevent rear wheel skid) and when load is added (and the rear of the truck drops) it trips the prop valve open to provide full brake line pressure to the rear. It's a primitive solution from before we had electronically controlled rear wheel anitlock brakes. I think it was really a "test beater" to help us with the loaded/unloaded portions of FMVSS 105 (federally mandated) brake testing and you could probably live in the real world without it. My truck does not have it. K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 10-08-2009 at 08:19 PM. |
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10-08-2009, 08:21 PM
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#3 |
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Registered User
Join Date: Sep 2009
Location: Upstate NY
Posts: 395
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Re: Load Control
Am I to assume that the brake line kits would account for the removal of this part. I think that it may not work cause I went to bleed the brakes and had a hard time getting fluid out of them. I was gonna replace the MC and booster too but was curious as to what that thing was...
Thanks much, Andy
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1997 GMC Yukon Western Mid Weight Plow |
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10-09-2009, 07:40 AM
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#4 |
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One shot, one kill.
Join Date: Dec 2007
Location: Saratoga Springs NY
Posts: 859
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Re: Load Control
Sarge, where upstate?? I got my line kit from classic tube in Buffalo & I couldn't be more satisified. It's all stainless steel and looks just like factory. Even the "wire wrap" is stainless. Hardest part was the right front line because of all the other stuff that goes behind\over or under the front member and motor mount $300 and worth every penny. I'll be dead before those lines ever need attention again. Changed over to DOT 5 fluid at the same time with new calipers, master cyl and rear cyl's and height valve right from my local Chevy store. jim
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1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shot  Jim or Paladin whichever you choose.
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10-09-2009, 09:40 AM
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#5 |
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Registered User
Join Date: Sep 2009
Location: Upstate NY
Posts: 395
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Re: Load Control
I am in the Schenectady area. GMCPauls has the kit for 185.00, its stainless so I assume stainless is stainless. I am going to restore this truck and I am starting to gather my parts. He's got to work too though. Its the shop truck/plow truck too. My plan was to get the brake lines replaced, M/C, Booster, proportioning valve, done before I have to push snow. I dont need a break down when I need the truck. I used the classic tube kit for my 85 GN I restored and sold, it was a great kit but its 115 bucks more.
If you have any parts layin around or know of anyone who does shoot me a PM. Sarge
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1997 GMC Yukon Western Mid Weight Plow |
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10-09-2009, 10:12 AM
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#6 |
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Registered User
Join Date: Nov 2007
Location: Franklin Indiana
Posts: 635
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Re: Load Control
You may wish to look at someone like http://www.classictube.com/ as well.
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My Truck's not leaking its marking its territory! Last edited by 87Bob; 10-09-2009 at 10:12 AM. |
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10-09-2009, 12:52 PM
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#7 |
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One shot, one kill.
Join Date: Dec 2007
Location: Saratoga Springs NY
Posts: 859
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Re: Load Control
Sarge, we should get togther or at least talk on the phone. I have a bunch of stuff here that could be used as well as the tools and some of the expertise to do what you are trying to do. give me a call at 518-581-1622 so we can talk. I'm up in Saratoga. Jim
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1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shot Jim or Paladin whichever you choose.
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