AC Delco Brake Proportioning Valve With the AC Delco brake proportioning valve, keeping the brake assembly in tip-top shape is more manageable. Brake problems? don't overlook the proportioning valve June 21st, 2012, 09:27 AM A friend of mine who's just paid a pretty penny to have his corvette restored called me out of desperation (you know how chevy guys hate to ask ford guys for help) because his newly restored vette had been poured over by several mechanics at the restoration shop. A disc/drum combination valve (PV2) is the easiest way to properly balance your braking system. This is the Own A 2001 Dodge Ram 1500 With Abs Brakes. Valve for $ 85 ( disc drum ) the disc disc prop. Search by Category. Skip to main content. The only way to reduce brake pressure is to install an adjustable proportioning valve inline on the brake line that feeds the rear brakes. There is a proportioning valve in the system that could be directing brake pressure to only the rear brakes. Classic Industries offers a wide selection of Brake Components for your 1977 Chevrolet Truck. Specializing in brake lines, fuel lines and disc brake conversion kits, brand covers all makes and models of American muscle cars including General Motors, Ford and Chrysler. The proportioning valve reduces the pressure to the rear brakes. The Wilwood unit that I used was $39. Instead, the anti-lock brake system (ABS) controls what happens at the brakes. They say money can't buy happiness. Brakes problem HD K2500, Silverado, ABS brakes, vacuum assisted power brakes. Available in chrome! Brackets and lines not included. Available for: GM, Fords, Chryslers and Jeep. Disc Brake Conversions, Pre-Bent Lines, Brake Parts, Fuel Products and more. Last year I replaced the master cylinder and rebuilt the calipers and rear cylinders. Brake proportioning valves work by receiving hydraulic pressure from the brake master cylinder via metal brake lines, and the plungers, valves and springs inside the proportioning valve are designed to allow only braking pressure to the rear of the vehicle until the spring and plunger are overcome by hydraulic pressure from the master cylinder. Chevrolet Camaro : Brake Proportioning Valve. I am unable to get any brake pedal in spite of repeatedly bleeding the system. At CARiD you can find a complete line of ACDelco products that ensure supreme reliability and top quality and deliver worry-free operation for years to come. Shop here and enjoy a wide selection of high-quality parts at affordable prices! Chevrolet Astro Brake Proportioning Valve Bestsellers View more. Personally, I believe one of my workers tightened the brake lines too tight and messed up the flared fittings in the valve. the key here is that they should be different How to check. While pulling vacuum on a rear cyl, you should see fluid dropping in the rear reservoir. Adjustable rear proportioning valve with pipe thread adapter to common 3/8 brake fitting. the metering valve ,if you have one ,only "delays" brake pressure to the front dics until the rear drum springs have a chance to unseat. We specialize in performance brakes for late fullsize GM cars from 1955-70 and muscle cars from 1962-74, Mopar, Chevy, & Ford. The service brakes have serious issues. We carry both disc/disc and drum/disc brake proportioning valves for Chevy, GMC, and Buick vehicles. The Wilwood unit that I used was $39. We specialize in performance brakes for late fullsize GM cars from 1955-70 and muscle cars from 1962-74, Mopar, Chevy, & Ford. The VIN of the car is 3GNEK18ROV_. for more information, visit www. If equal braking force were applied to all four wheels during a stop, the rear wheels would lock-up before the front wheels. E) Proportioning Valve Adjustment 1) The proportioning valve in the Prop Block will be used to adjust the rear brake pressure of the vehicle. Then disconnect the flexible brake line from the LSPV, and finally remove the LSPV from the frame-rail. Since, it is a race car, you could just bypass it. Make sure you bleed that one too. A question, the Wilwood knob is turned clockwise to increase rear brake isnt it? The label is missing on mine. We also recommend the addition of a 10 lb residual valve (RPV10) to the rear drum. The front bowl is for the front brakes for front disc brakes - consider the size of the pistons in the front calipers. (probably the fact that GM put itty bitty rotors on the front of a net 5000lb vehicle) It's like my rear brakes do not even engageso I want to test the proportioning setup to see. The problem with the proportioning valve is it only affected the rear wheels. drum brakes use a proportioning valve to adjust hydraulic pressure. Camaro Central is a service friendly restoration parts distributor specializing in 1967 thru 2016 Chevy Camaro products. Why Your Old Chevy's Brakes Won't Bleed. the back top out around 500-800 psi and the front are around 1200 or higher. At CARiD you can find a complete line of ACDelco products that ensure supreme reliability and top quality and deliver worry-free operation for years to come. GM Disc Drum Brake Brass Proportioning Valve Street Rod Classic Car & Truck. Rear brake load proportioning valve I just lifted my 86 M1008 and much to my dismay, while finishing up the rear of the truck and getting ready to connect the linkage for the rear proportiong valve I watched as my brother spun the valve to "see if it was free and working" So now armed with no knowledge of where it was originally positioned. Depending on what's going on on the outlet side of your P-valve, you may be proportioning the front brakes. Re: Proportioning Valve questions/problems. Brake rotors should last longer than 6 months. The problem with the proportioning valve is it only affected the rear wheels. The front bowl is for the front brakes for front disc brakes - consider the size of the pistons in the front calipers. 0 out of 5 by 7. You will find the fit and function will work superbly for your restoration. Nothing but the best quality GM brake proportioning valve will do, and that's what you get from Carolina Classic Trucks. wrench If the rear brake system fails ( which it did with the wheel cylinders failing) Then the front system forces the switch position to the right ( in the valve) The switch pin is forced up into the switch and makes an electrical circuit, ( brake warning light in dash) When the repairs were made. Brake Pedal Pulses Up and Down When Applying Brakes If every time you apply your brakes, your brake pedal pulses up and down, the problem is usually caused by the rotors being warped or out of true. 15768819 is the GM part Number or AC Delco 172-2267 If you want a replacement your best bet is the junkyard. How to adjust proportioning valve? #850665 Fri stopped straight with no problems or skidding with a heavy quick brake application. Nothing but the best quality GM brake proportioning valve will do, and that's what you get from Carolina Classic Trucks. They provide balanced braking during sudden, hard braking by restricting fluid pressure to the rear brakes. Enter the brake proportioning valve. The brake light warning switch signals when there is an imbalance of pressure in the system caused by a problem in the front or rear brakes. 2) Vehicles with 4-wheel drum brakes don't need a proportioning valve, while vehicles with disc brakes and rear drums DO need a proportioning valve! (More on this later. I figure the cylinder in the valve shifted and cut off flow to the rear. As you panic brake you shift the weight off the rear more than normal braking so the valve limits rear pressure so you don't lock the rear tires up as easy. The function of the subframe-mounted proportioning valve (avoiding rear brake lockup) only becomes important under panic-braking conditions; it doesn't come into play until hydraulic pressure exceeds about 400 psi, and isn't fully effective until around 1000 psi. Rear brake load proportioning valve I just lifted my 86 M1008 and much to my dismay, while finishing up the rear of the truck and getting ready to connect the linkage for the rear proportiong valve I watched as my brother spun the valve to "see if it was free and working" So now armed with no knowledge of where it was originally positioned. It may have failed or have air trapped in it. Since your front brakes generate up to 75% of the vehicle's stopping force, equal pressure can't be applied to all four wheels at the same time. You should never wait to have your brakes looked at, or repaired, when you are having a problem stopping the vehicle. 67-69 Wagner Brake Pressure Differential and Control Valve Kit | Muscle Car Research LLC I think this is the right kit. 1955 1956 1957 Chevrolet Belair Proportioning Valve Disc & Drum. The modulation is necessary to minimize rear wheel lock up found in heavy braking and to compensate for the differences in braking conditions in front disc / rear drum systems. Get great deals on eBay!. Used Chevrolet Brake Proportioning Valves Are you trying to find used Chevrolet brake proportioning valves? If so, PartRequest. You adjust it so the front brakes lock up just before your rear ones do. AC Delco Brake Proportioning Valve With the AC Delco brake proportioning valve, keeping the brake assembly in tip-top shape is more manageable. Disc Brake Kits. With a proportioning valve you can reduce the brake pressure going to the front brakes so that the front brakes lock up just before the rears. Danchuk # 13200 has a 1" bore and will work on any 1955-1957 classic Chevy with a front disc brake upgrade. 00 antilock brake proportioning valve electronics had failed. I have run the lines directly from the master to the front and rear brakes. 1955 1956 1957 Chevrolet Belair Proportioning Valve Disc & Drum. Verify that the brake sensor wire has a tight, clean connection to the sensor tip. drum brakes use a proportioning valve to adjust hydraulic pressure. Proportioning valves can get stuck at either end of the valve body, requiring a procedure to free them up. We also recommend the addition of a 10 lb residual valve (RPV10) to the rear drum. 1968 Chevrolet Camaro Parts - Proportioning Valve. When upgrading your vehicle from drum to disc, these small items are a must. Proportioning Valve Kits; Replacement Valves; Replacement Brake Components. So i recently have been doing alot of brake work. It seemed like the rear cylinders might have been sucking air back in but I am not sure. These 3 components consist of a metering or hold-off valve, a proportioning valve, and a pressure differential switch. My problem isn't bleeding brakes. Subject: REVISED REAR SUSPENSION ON VEHICLES WITH HEIGHT SENSING PROPORTIONING BRAKE SYSTEMS - 1982-83 "C/K" 30 TO: ALL CHEVROLET DEALERS 1982-83 "C/K" 30 series trucks are equipped with a rear suspension height sensing device that optimizes the brake proportioning valve setting for the load the vehicle is carrying. New air was being introduced into the system from the plunger on the backside of this valve. Proportioning valves can get stuck at either end of the valve body, requiring a procedure to free them up. I did not install the proportioning valve. This valve allows rear brake pressure to be reduced for driver preference and are typically used in conjunction with a metering valve. brake proportioning valve was created by angelfan0908 i have a 1990 Honda civiv lx and am having a problem with my calipers not releasing. Adjustable rear proportioning valve with pipe thread adapter to common 3/8 brake fitting. I just got the valve off and oh boy what a chore. Disc Brake Conversions, Pre-Bent Lines, Brake Parts, Fuel Products and more. Having EARLY rear wheel lock up is a sign of a malfunctioning proportioning valve. One part of your Nissan Pathfinder is the Brake Proportioning Valve. Fast shipping with low price guarantee. The junk yard valve has about 25,000 miles with no problems. This is the Own A 2001 Dodge Ram 1500 With Abs Brakes. Common brake problems, such as a soft brake pedal, pulling to one side while braking, or vibration while braking can have serious implications for your car's health (and your health, in turn!). If the brakes are bled with a pressure bleeder that develops less than 30 psi, the plunger at the rear of the metering valve must be depressed in order to hold the valve open so it allows fluid to flow to the front calipers. Speedway Motors offers proportioning valves in a variety of styles and finishes to work for whatever your application is. In order to be able to post messages on the Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum forums, you must first register. Find our best fitting brake proportioning valves for your vehicle and enjoy free next day delivery or same day pickup at a store near you!. Being in the auto service business for years I think I can safely say this problem stems from the proportioning valve in the brake system. Rear brake proportioning valve 05-22-2011 06:38 PM #1 So we were working on the race car today (engine swap went well, car runs great now), and while underneath we found this valve near the driver side rear to be leaking from right around the middle where this rubber band is around it. Get deals on automotive parts, truck parts and more. Hey guys need some help. DRP 2001 Chevrolet Corvette 2001 BRAKES Anti-Lock/TCS - Corvette. This happened to me last year when I rebuild my brakes. The 2013 Chevrolet Sonic has 11 NHTSA complaints for the service brakes at 20,945 miles average. The problem with the proportioning valve is it only affected the rear wheels. The brakes required a pump or two every time I stopped. Can any one shed some light on reparing the brakes on a 73 chevy C-60. Classic Industries offers a wide selection of Brake Components for your 1977 Chevrolet Truck. The adjustable valve is used by itself and not in conjunction with the GM-style valve. Then inspected front disk brake pads, needed replacement. With drum brakes, a 10 lb. The problem is that as you begin to slow the vehicle weight shifts to the front and requires less braking power at the rear. This item: Full Size Chevy Disc & Drum Brake Proportioning Valve, 1958-1981 Full Size Chevy Brake Proportioning Valve Bracket, With Power Brakes,1958-1964 Full Size Chevy Proportioning Valve Bracket, Polished Stainless Steel, With Power Brakes, 1958-1964. My bet is that the production set up on the proportioning valve is different than that used for durability testing. 1960-87 Chevy truck Brake Parts include power brake booster kits, disc brake conversions, master cylinders, rear disc brake conversions and many other quality brake parts from Performance Online Home Brakes :: 1960-87 Chevy, GMC C10, C15, C20 Truck :: Proportioning Valves and Accessories. A kink in the check valve hose will also result in this hard brake pedal condition. 1968 Chevrolet Camaro Parts - Proportioning Valve. Classic Industries offers a wide selection of Brake Components for your 1977 Chevrolet Truck. The 69 metering valve is similar but slightly larger in diameter than the 67-68 style metering valve. Absolutely nothing is more important to the operational safety of an automobile than the braking system. residual check valve prevents fluid from flowing back without causing the brakes to drag. There is a proportioning valve in the system that could be directing brake pressure to only the rear brakes. Even with proper maintenance, you may find yourself with an unexpected brake problem -- here are some of the most common examples. I'm having problems getting leaks to stop around the proportioning valve since I did the Granada swap. I just got the valve off and oh boy what a chore. The Right Valves. I understand if there is a line leaking from one of the two outlets it pushes the piston of the metering valve on the proportioning valve off center and then starts leaking out of the nipple on the front. Camaro Central is a service friendly restoration parts distributor specializing in 1967 thru 2016 Chevy Camaro products. I have looked into it and it seems as though trucks with 4 wheel disc come with proportioning valves so 2 lines come from the master cylinder and run into a proportioning valve and then to the abs module where then they split into 4 lines and go to each brake. The electronic brake distribution system replaces the hydraulic proportioning valve. 00 antilock brake proportioning valve electronics had failed. Disc Brake Conversions, Pre-Bent Lines, Brake Parts, Fuel Products and more. Available Now: $350 - $1761. Disc Brake Kits. New proportioning valve came in last week and it was one without the trip button and was plumbed for disc-to-disc with 50% pressure to the rear and front brakes. The drum side often has a RPV. Subsequently I read about "resetting" the proportioning valve by removing some lines, depressing pin, etc. They went for shorter stoping distance/safety (increases sales) in the end and it cost us. Cap is plain black rubber and replaces the origina 1967 1968 1969 : $3. Owners of Chevy C1500 pickup trucks may sometimes be confronted with an emergency brake dashboard warning light that remains on even though the brake has been released. Get the job done with the right part, at the right price. OER Parts offers a wide selection of Brake Components for your 1968 Chevrolet Camaro. This part works on full-size Chevy and GM trucks from half ton through one ton, whether it's a 2-wheel drive or a 4-wheel drive. When a Brake Reline or Disk Pad replacement is being performed on a Car, the Proportioning Valve can become activatedand illuminate the Brake Warning Lamp on the Dash. I did not install the proportioning valve. The proportioning valve leaks on my '74 K5 - why and how do I fix it? Background: I have the usual story,the brake fluid was not changed every 5 years. If you've had you're rear brake lines off you definetly will want to bleed that one. Proportioning Valves or Disc Brake Valves - Proportioning valves are used in disc/drum brake systems to provide the correct pressure for front disc and rear drums. Order your Chevy GMC Stainless Steel Brake Line Set Dorman 919-101 - 1ABRL00362 today at 1AAuto. I have put new disc brakes on the front from a 1975 Camaro and new shoes on the rear. Chevrolet Holden GM C15 C25 C35 Genuine Brake Proportioning Valve 1257203. To reset the proportioning valve I read that you could take a small sledge hammer and hit the brake pedal, I had about 10-12 inches of travel so it was not a massive hit and it reset. proportioning function of the mechanical proportioning valve in the base brake system. was this the original problem to start with ??? if it was and the problem is still there you have missed something. So I called my local dealer yesterday and come to find out my sierra does not come with a proportioning valve. Factory original brake combination valves were iron bodied and subject to considerable inner deterioration due to excessive absorbed moisture in brake fluid, especially when brake fluid was not replaced often enough. • The proportioning valve is ideal for cars that must retain the stock calipers and master cylinder, yet have too much rear brake when running soft tires. How to reset a proportioning valve switch (brakes) Steering, Suspension, and Chassis How to reset a proportioning valve switch (brakes) - Chevy Nova Forum Steve's Nova Site is an automotive enthusiast website dedicated to the 1962 - 1979 Chevrolet Nova, Chevy II and Acadian automobiles. Master cylinder accommodates both Ford and Chevy mounting bolt batterns. Re: Load sensing proportioning valve removal? « Reply #17 on: Jul 01, 2010, 01:27:54 PM » All you need, as shown by a few posts above by Mnmstoy, is a simple Wilwood or Summit valve in line with the rear brakes, to reduce the pressure to the rears, adjustable according to your tire size and rear weight load. With a proportioning valve you can reduce the brake pressure going to the front brakes so that the front brakes lock up just before the rears. Why Your Old Chevy's Brakes Won't Bleed. The problem with the proportioning valve is it only affected the rear wheels. I just went through this exact same problem 2 weeks ago when I swapped out the rear in the camaro. The service brakes have serious issues. You can save this pics file to your individual device. Order your Chevy Buick Pontiac Olds Brake Proportioning Valve Dorman - 1ABRV00005 today at 1AAuto. Brake booster failure will leave a vehicle with a hard brake pedal. Chevy Brake Proportioning Valve, Chrome, GM Style, 1955-1957. The rear contains the adjustable proportioning valve and the maximum rear pressure adjustment. Classic Industries offers a wide selection of Brake Components for your 1977 Chevrolet Truck. I cut the brake lines off so that I could use a socket to remove the fittings. Valve for $ 85 ( disc drum ) the disc disc prop. The valve stops the flow, or pressure of brake fluid to the rear drum brakes during every heavy braking or emergency stops; otherwise, the rear brakes lock up and skid, receiving too much pressure from the master cylinder. Anyone had any problems with these valves? I just cannot get sufficient rear brake, they work but not enough to provide sufficient balance for the fronts. Genuine Honda Civic Brake Proportioning Valve. Rear brake load proportioning valve I just lifted my 86 M1008 and much to my dismay, while finishing up the rear of the truck and getting ready to connect the linkage for the rear proportiong valve I watched as my brother spun the valve to "see if it was free and working" So now armed with no knowledge of where it was originally positioned. Locate the brake bleeder valve on the right (passenger side) rear brake. Wasn't long till I got no fluid out of either rear brake cylinder. Fuel Injection Sucks Chevy Truck ABS Problems / Unwanted ABS Activation Disc Brake Distribution Block and Proportioning Valve Rebuild - How To. When this happens, the rear wheels lose some weight and can lock up if the pressure is too great too quickly in the braking process. My Tahoe has warped the front rotors under normal use(no towing) under warranty 6 times and twice more out of warranty with only 38k miles total. What the Proportioning Valve does and when it actually works is one of the biggest misunderstandings in a Combination Valve. Classic Industries offers a wide selection of Brake Components for your 1972 Chevrolet Truck. GM A-Body 1964-72, F-Body 1967-72, X-Body 1968-74 Power Brake Kit 11" Delco Style Single Diaphragm Power Brake Booster, Chrome Master Cylinder, and Chrome Proportioning Valve Kit approximately 23 lbs. Too much proportioned to the front brakes causes warpage and sudden vehicle jerk. Classic Industries offers 1977 Chevrolet Truck Proportioning Valve, 1977 Chevrolet Truck Adjustable Proportioning Valve, 1977 Chevrolet Truck Combination Valve Set with Lines and Bracket, 1977 Chevrolet Truck Distribution Valve, 1977 Chevrolet Truck. My brake pedal was going to the floor and it seemed just my back brakes would work. the key here is that they should be different How to check. These pre-tuned valves are available in disc/disc, disc/drum and drum/drum configurations. When upgrading your vehicle from drum to disc, these small items are a must. 00 antilock brake proportioning valve electronics had failed. Get deals on automotive parts, truck parts and more. It seemed like the rear cylinders might have been sucking air back in but I am not sure. At CARiD you can find a complete line of ACDelco products that ensure supreme reliability and top quality and deliver worry-free operation for years to come. Summit Racing (800-230-3030) and Jeg's sells several proportioning valves. By "fit" I mean that it was pretty close to duplicating a factory like installation to begin with. Genuine Honda Civic Brake Proportioning Valve. 2003 Chevy Tracker - Brake Bleeding woes Master has one line that goes to the proportioning valve from the back part of the master. This is the Own A 2001 Dodge Ram 1500 With Abs Brakes. Brake Differential Proportional Valve problem of Chevrolet Tahoe. The combination block maintains full isolation between front and rear fluid circuits and can be used in conjunction with any tandem outlet or dual mount master cylinder. The valve stops the flow, or pressure of brake fluid to the rear drum brakes during every heavy braking or emergency stops; otherwise, the rear brakes lock up and skid, receiving too much pressure from the master cylinder. While pulling vacuum on a rear cyl, you should see fluid dropping in the rear reservoir. Brake problems? don't overlook the proportioning valve June 21st, 2012, 09:27 AM A friend of mine who's just paid a pretty penny to have his corvette restored called me out of desperation (you know how chevy guys hate to ask ford guys for help) because his newly restored vette had been poured over by several mechanics at the restoration shop. The rear brakes may feel touchy when applied even gently. I bench bled it, installed and bled all four corners while depressing the little "button" on front of the prop valve. Furthermore, the wheels will lock up more easily on wet surfaces. I had good brakes firm pedal, pedal only moved about 1/3 distance to floor to attain firm solid braking action. Or get a couple of manual valves from Tilton or Wilwood and adjust the rear brakes to perform the way you want. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Re: Brake Proportioning Valve problems. Well to make a long story shorter, the $800. With drum brakes, a 10 lb. The VIN of the car is 3GNEK18ROV_. Proportioning Valve: The Proportioning Valve part of the Combination Valve (seen above and labeled as A) is used to control the rear brakes. Proportioning Valve Adjustment: The proportioning valve is used to adjust the rate of increase in rear brake line pressure, relative and proportionate to the increase in front brake line pressure. With an adjustable proportioning valve, you can slow down the pressure rise that occurs when you apply the brakes. it is my understanding that all Chevy GMC Ford have same issue with brake line. Click here to download Installation Instructions for this part. This happened to me last year when I rebuild my brakes. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. I just started at the passenger rear with a homemade brake bleeder (bottle of fluid to keep air out). We also recommend the addition of a 10 lb residual valve (RPV10) to the rear drum. Adjust brake pressure individually as needed for a variety of driving conditions. If you don't have, see if you can borrow a vacuum pump for the brakes. RESTORATION. The rear usually fails first. Designed for firewall mounted brake systems. K_: I have a 1967 Chevelle which had all drum brakes. the key here is that they should be different How to check. Started out with a new master cyl last year. A faulty replacement part is extremely unlikely. The front bowl is for the front brakes for front disc brakes - consider the size of the pistons in the front calipers. Buy Master Cylinders, Kits & Proportioning Valves - Brake Systems online from NAPA Auto Parts Stores. Most drum brakes have a primary and secondary shoe and the engagement of the primary shoe causes extra force to be applied to the secondary shoe through the adjuster link. Fine tune your brake performance by installing a proportioning valve. After driving my car for awhile and braking my calipers stay binding on my rotors and wont disengage but after driving for awhile they will finally disengage. It does not allow any pressure to the disc brakes until a pre-determined pressure has been reached. In order to be able to post messages on the Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum forums, you must first register. Whichever type of brakes your vehicle has, the rear brakes require less pressure than the front brakes. Looking for Chevy Brake Proportioning Valve today? Find Chevy Brake Proportioning Valve and other automotive parts and accessories for sale on Ebay. Brake rotors should last longer than 6 months. Proportioning Valve) In trying to work out the brakes on my 4Runner build-up, it came time to address the stock load sensing proportioning valve (LSPV). I tried cleaning it but it made rear brakes even more touchy. We stock GM proportioning valves for a wide variety of makes, models, and years. This will reset the proportioning valve. Fine tune your brake performance by installing a proportioning valve. Re: Proportioning Valve questions/problems. To make a long story short, the problem was the round proportioning/ accumulator valve under the master cyl. The objective is to balance the pressure of the rear brakes to the front so that under hard braking, the rear brakes do not lock up before the fronts. after 3 sets, something is not right. 00 antilock brake proportioning valve electronics had failed. 0 out of 5 by 7. I just got the valve off and oh boy what a chore. Choose top quality brands AC Delco. The system actively controls the rear brake pressures for the best performance and comfort. I bled them a few more times, no change. Like Joe says it just turns on the warning light when one system fails & pressure is uneven. The proportioning valve, also called the combination valve, is located in the disc braking system. Please filter the Brake Proportioning Valve results by choosing a vehicle. soft Brakes but I know that I have to change my Prop valve, because I put in the wrong one last time. Brake Proportioning Valve INSTALLATION INSTRUCTIONS 98-1261. On some 2008-‘09 Honda Accords, the stock programming for the EBD system caused premature rear pad wear. I have installed the booster and master cylinder from a 2000 S-10 in my 1952 CHEVY. proportioning valve i have trailblazer 2003. There are very few things that will keep you as warm as looking forward to breaking. I bled them a few more times, no change. When upgrading your vehicle from drum to disc, these small items are a must. CAUTION 1: Brake fluid will damage your paint. then out to the wheels. Repaired that, bled the brakes, and stopping was the same (pump pump stop). I found in a salvage yard on a 1967 sedan the power brake booster, lines, distribution block/proportioning valve complete with master cylinder. Shop safely with us online or call 888-844-3393 and buy the quality part your car or truck needs today. The brake proportioning valve is a metering device that equalizes the pressure between the front and rear brakes. The proportioning valve was not resetting and most of the problem I think. It must reduce the percentage of front wheel brake air pressure when a trailer is attached. CarComplaints. Re: Proportioning Valve questions/problems. The rear contains the adjustable proportioning valve and the maximum rear pressure adjustment. Choose top quality brands AC Delco. There is a proportioning valve in the system that could be directing brake pressure to only the rear brakes. I purchased a remanufactured Cardone unit MC/Booster combo. 97 now from Car Part Kings. Buy Master Cylinders, Kits & Proportioning Valves - Brake Systems online from NAPA Auto Parts Stores. or is open to air. While doing this I had a screw up. Brake problems? don't overlook the proportioning valve June 21st, 2012, 09:27 AM A friend of mine who's just paid a pretty penny to have his corvette restored called me out of desperation (you know how chevy guys hate to ask ford guys for help) because his newly restored vette had been poured over by several mechanics at the restoration shop. 1955 1956 1957 Chevrolet Belair Proportioning Valve Disc & Drum. in vice on bench and worked the master cyl. They went for shorter stoping distance/safety (increases sales) in the end and it cost us. Verify that the brake sensor wire has a tight, clean connection to the sensor tip. Re: Proportioning Valve questions/problems. Hey guys need some help. Danchuk has the largest selection of quality 55, 56, 57 parts for your classic Chevy project. Brakes problem 1989 Chevy Silverado V8 Four Wheel Drive Automatic I have a proportioning valve that has a brake line inlet that has a stripped thread and cannot be rethreaded. Pirate Jack Hot Rod Restoration is your one "stop" shop for quality disc brake conversions, brake boosters, master cylinders, and proportioning valves. Proportioning valve utilizes a lower pressure shut off valve for safety, should line pressure ever become compromised. A while ago I pulled my drum brakes from the front of my 1975 Ford Bronco and installed disc brakes but I never replaced the proportioning valve. These replica's of the GM combination-proportioning valves are based on the popular AC Delco 172-1353 (disc-drum) and 172-1361 (disc-disc) valves. Even with proper maintenance, you may find yourself with an unexpected brake problem -- here are some of the most common examples. 7L V8 > Brake & Wheel Hub > Proportioning Valve. On some 2008-‘09 Honda Accords, the stock programming for the EBD system caused premature rear pad wear. Instead, the anti-lock brake system (ABS) controls what happens at the brakes. If the pedal dropped on down the. A prime example is SCCA A Sedan (AS). In this event, the switch must be centered. The metering valve delays front disc braking until the rear drum brake shoes contact the drum. Whichever type of brakes your vehicle has, the rear brakes require less pressure than the front brakes. in vice on bench and worked the master cyl. CHEVROLET > 1999 > TAHOE > 5. The front bowl is for the front brakes for front disc brakes - consider the size of the pistons in the front calipers. The vehicle is a 1997 Chevrolet Tahoe. Low Price Guarantee. The rear brakes may feel touchy when applied even gently. Home » Shop Drag Racing Parts » Strange Brakes » Brake Proportioning Valves » Strange Adjustable Proportioning Valve Strange Adjustable Proportioning Valve $ 49. then out to the wheels. To reset the proportioning valve I read that you could take a small sledge hammer and hit the brake pedal, I had about 10-12 inches of travel so it was not a massive hit and it reset. Disc Brake Kits. Classic Industries offers a wide selection of Brake Components for your 1972 Chevrolet Truck. Then when I was removing my factory wiring harness. Please filter the Brake Proportioning Valve results by choosing a vehicle. Last year I replaced the master cylinder and rebuilt the calipers and rear cylinders. Chevy Brake Problems: Common Issues and How to Fix Them Checking your brakes at regular intervals is a good practice towards the maintenance of your Chevy. Rear brake load proportioning valve I just lifted my 86 M1008 and much to my dismay, while finishing up the rear of the truck and getting ready to connect the linkage for the rear proportiong valve I watched as my brother spun the valve to "see if it was free and working" So now armed with no knowledge of where it was originally positioned. Equal brake force cannot be applied to.