We stock GM proportioning valves for a wide variety of makes, models, and years. Since the proportioning valve decreases the pressure sent to the rear brakes, the main symptom the valve is going bad is the rear wheels locking up when the brakes are applied. It does not allow any pressure to the disc brakes until a pre-determined pressure has been reached. Sometimes this vacuum is blocked at the intake manifold port. Rear brake proportioning valve. They say money can't buy happiness. Adjustable Proportioning Valve Block, Brake Distribution System, Black. But it seems that the brake setup on my truck is set too strongly for the front. Last year I replaced the master cylinder and rebuilt the calipers and rear cylinders. Like @98Sonosls mentioned it could very well be the fitting or tube that is leaking rather than the valve itself. Brakes problem HD K2500, Silverado, ABS brakes, vacuum assisted power brakes. 00 antilock brake proportioning valve electronics had failed. after 3 sets, something is not right. if necessary, adjust fluid pressure. Brake proportioning valve General. Proportioning Valve Kits; Replacement Valves; Replacement Brake Components. Get deals on automotive parts, truck parts and more. Find proportioning valve from a vast selection of Brakes & Brake Parts. By the way I have the same problem with my 75 Firebird. As the pads and rotors wear, it will take a tremendous amount of fluid to displace the front pistons with their large bores compared to the relatively small pistons in the rear wheel. So, some people will ditch the combination valve or a proportioning valve in favor of an adjustable 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. Metering valve is on the left and proportioning valve is large nut on the right where the 9/16-18 ports is located. Why Your Old Chevy's Brakes Won't Bleed. It can accurately detect exactly where the problem is and allow the tech to fix it the first time, saving time, energy, guesswork and embarrassment when the customer comes back. So i recently have been doing alot of brake work. Enter the brake proportioning valve. CAUTION 1: Brake fluid will damage your paint. Also try the valve in other positions too. The Speedway Motors adjustable proportioning valve block, brake distribution system Part Number 910-31367-BLK has it covered for you. Too much proportioned to the front brakes causes warpage and sudden vehicle jerk. im wanting to know if i can go without installing a proportioning valve since the truck is being used strictly as an offroad truck at this time, and wont be street driven. If equal braking force were applied to all four wheels during a stop, the rear wheels would lock-up before the front wheels. 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. 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. A brake booster needs the right amount of vacuum to operate. Swapping Out Front Drums For Discs. So, I went to the front and loosened the line from the front of the proportioning valve and still no fluid. The adjustable proportioning valve is used to set rear brake pressure to reduce rear wheel lockup on front wheel drive vehicles. The front bowl is for the front brakes for front disc brakes - consider the size of the pistons in the front calipers. If you drive a Chevrolet or GMC full-size truck from model years 1981 - 1987, then this is the correct brake proportioning valve for your front disc and rear drum brakes. 4 out of 5 stars 10. Read the Chevy High-Peformance technical article on installing and tuning a brake proportioning valve, brought to you by the experts at Chevy High Performance Magazine. The fix for this problem is a reflash of the ABS system and improved brake pads. There are very few things that will keep you as warm as looking forward to breaking. Bearings & Seals; Calipers & Hoses; Rotors; Spindles; Steering & Suspension; 1968-1974 Chevy Nova. Shop safely with us online or call 888-844-3393 and buy the quality part your car or truck needs today. Many people elect to do the repairs themselves as doing simple brake repairs. 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. Please filter the Brake Proportioning Valve results by choosing a vehicle. A disc/drum combination valve (PV2) is the easiest way to properly balance your braking system. Nothing but the best quality GM brake proportioning valve will do, and that's what you get from Carolina Classic Trucks. Absolutely nothing is more important to the operational safety of an automobile than the braking system. The fix for this problem is a reflash of the ABS system and improved brake pads. in vice on bench and worked the master cyl. brake booster restoration for general motors vehicles only! My Pledge I will rebuild and restore your General Motors power brake booster, master cylinder cover & proportioning valve bracket with correct, show quality, gold zinc and return to you for $235. brake proportioning valve is reading a problem for the brakes you can bleed rear brakes they might have air in them chck you rear wheel cyl. The proportioning valve is located just below the master cylinder and has two lines from the master cylinder running into it. proportioning function of the mechanical proportioning valve in the base brake system. Chevrolet Camaro : Brake Proportioning Valve. OER Parts offers a wide selection of Brake Components for your 1968 Chevrolet Camaro. Proportioning valves come in various shapes and sizes depending on the car you have and modifications to the braking system. With the rotor in place, install the brake pads into the caliper and then mount the caliper with the appropriate hardware. Where is the brake proportioning valve on 99 chevy brake proportioning valve is reading a problem for the brakes you can bleed rear brakes they might have air in them chck you rear wheel cyl. The proportioning valve reduces the pressure to the rear brakes. 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. 2003 Chevy Tracker - Brake Bleeding woes Master has one line that goes to the proportioning valve from the back part of the master. This happened to me last year when I rebuild my brakes. This 5 port valve accepts 3/16″ line and is easy to install. My bet is that the production set up on the proportioning valve is different than that used for durability testing. Repeat all of this for the opposite side and then remove the brake lines from the proportioning valve (including the rear lines, even though you are not changing rear brakes). 1974 pontiac firebird/transam proportioning valve (combo valve - used on 1967-72 cars with front disc brake conversion & 71-81 cars with front disc brakes & rear drum) Price: $70. Buy ACDelco Brake Proportioning Valve 15172017 for 148. (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. 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. These pre-tuned valves are available in disc/disc, disc/drum and drum/drum configurations. The valve has 2 inlets from the master cylinder, 2 outlets to the front brakes and 1 outlet for the rear brakes. If you have antilock brakes, you will have a problem bleeding if air is in the line ABOVE the proportioning valve in the brake line. Adjustable rear proportioning valve with pipe thread adapter to common 3/8 brake fitting. The "real" test will be when you brake heavily. 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. Disc Brake Conversions, Pre-Bent Lines, Brake Parts, Fuel Products and more. Home » Shop Drag Racing Parts » Strange Brakes » Brake Proportioning Valves » Strange Adjustable Proportioning Valve Strange Adjustable Proportioning Valve $ 49. The VIN of the car is 3GNEK18ROV_. 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. The 1999 Chevy Cavalier used a brake proportioning valve to route brake fluid to the front and rear wheels. Find a quality Chevrolet 1500 Pickup Brake Proportioning Valve and other used Truck parts from the top auto salvage yards. Learn more about the most common brake issues and their solutions, here. Also try the valve in other positions too. Re: Freeing up a stuck proportioning valve? 12-07-04 05:50 PM - Post# 570083 In response to good. Is it somewhat safe to assume that the proportioning valve is at fault? Btw, it is a '69 with power front disc brakes. Check valves will most likely be necessary when the master cylinder is lower than the calipers or hard lines run higher than the master cylinder fluid level. that runs to a vacuum boost chamber under the driver side of the cab. If you have antilock brakes, you will have a problem bleeding if air is in the line ABOVE the proportioning valve in the brake line. in vice on bench and worked the master cyl. If you've had you're rear brake lines off you definetly will want to bleed that one. Includes correct brake fluid warning switch for 1974-1977 Corvettes. These valves should only be checked if the customer's complaint indicates a possible proportioning valve problem. Whether you're a do-it-yourselfer or trained auto tech, you'll appreciate the convenience of home or business delivery, or picking up your Brake Proportioning Valve product at the nearest Advance Auto Parts location. Find 1986 CHEVROLET C10 Summit Racing® Brake Proportioning Valves SUM-760185 and get Free Shipping on Orders Over $99 at Summit Racing! Summit Racing® brake proportioning valves keep the proper amount of brake fluid pressure applied to your front and rear wheels. Disc brake Camaros use: NO residual pressure valve in the disc side of the master cyl. They say money can't buy happiness. Shop online or Call 800-544-8778 to order today. Examine the proportioning valve body for any leaks, indicating a worn or blown seal. NEW OLD STOCK. im wanting to know if i can go without installing a proportioning valve since the truck is being used strictly as an offroad truck at this time, and wont be street driven. The 2013 Chevrolet Sonic has 11 NHTSA complaints for the service brakes at 20,945 miles average. 1977 Chevrolet Truck Parts - Proportioning Valve. Essential to the braking system of your 1967-1981 Chevrolet Camaro, Rick's Camaro brings you the Camaro Disc Brake Conversion Proportioning Valve to help provide even and proportional braking on all wheels of the car, ensuring maximum safety. Learn more about Chevrolet Suburban at the Edmunds. Search by Category. No longer available elsewhere. brake lines leading to them. Find a quality Chevrolet 1500 Pickup Brake Proportioning Valve and other used Truck parts from the top auto salvage yards. Find 1984 CHEVROLET C10 Summit Racing® Brake Proportioning Valves SUM-760185 and get Free Shipping on Orders Over $99 at Summit Racing! Summit Racing® brake proportioning valves keep the proper amount of brake fluid pressure applied to your front and rear wheels. I chose the black one for my 1976 Chevrolet Laguna S-3 because the car is going to have a blackout appearance, but the valve kit is available in a chrome finish as well under Speedway Motors Part Number 910-31367. Classic Industries offers 1972 Chevrolet Truck Proportioning Valve, 1972 Chevrolet Truck Adjustable Proportioning Valve, 1972 Chevrolet Truck Combination Valve Set with Lines and Bracket, 1972 Chevrolet Truck Distribution Valve, 1972 Chevrolet Truck. It does not allow any pressure to the disc brakes until a pre-determined pressure has been reached. This brake line adapter set eliminates any headaches while fitting many of today's different proportioning valves and brake lines to your vehicle's plumbing. Want an affordable yet high-quality Chevrolet K1500 Brake Proportioning Valve? Shop now and enjoy our lowest price guarantee and access to the best brands in the industry!. Wilwood’s new Combination Proportioning Valve substantially simplifies mounting, plumbing, wiring and brake proportioning adjustments on vehicles with custom brake systems. cab silverado ; one day I turned my truck off and got out and could hear an electric motor running. While pulling vacuum on a rear cyl, you should see fluid dropping in the rear reservoir. CarComplaints. Shop proportioning valve bracket here. OK here goes, 1988 chev camper, 3500 and replaced leaking master cylinder, bleed system over and over and cant get hard peddel and no real pressure at rear drum bleeder when helper pushing peddal to floor?. Nothing but the best quality GM brake proportioning valve will do, and that's what you get from Carolina Classic Trucks. rear brakes do not lock up before the front brakes. If you've had you're rear brake lines off you definetly will want to bleed that one. These are built for long lasting durability and trouble free use. Find a quality Chevrolet 1500 Pickup Brake Proportioning Valve and other used Truck parts from the top auto salvage yards. 1972 Chevrolet Truck Parts - Proportioning Valve. Read the Chevy High-Peformance technical article on installing and tuning a brake proportioning valve, brought to you by the experts at Chevy High Performance Magazine. The front bowl is for the front brakes for front disc brakes - consider the size of the pistons in the front calipers. Chevy Brake Adjustable Proportioning Valve, Rear, 1955-1957. With zero or low pressure in the brake line, the valve is open, allowing brake fluid to flow easily through the valve. 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. Verify that the brake sensor wire has a tight, clean connection to the sensor tip. The valve has 2 inlets from the master cylinder, 2 outlets to the front brakes and 1 outlet for the rear brakes. The drum side often has a RPV. The proportioning valve has one purpose. I fought brake probs for days in the past before I realized that was a bleeder too. 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. With an adjustable proportioning valve, you can slow down the pressure rise that occurs when you apply the brakes. IPA's Disc Brake System Analyzer is designed to save the day. This of course assumes that your Proporioning valve was a good "fit" to begin with. NHTSA — Service Brakes Problems. Pirate Jack Hot Rod Restoration is your one "stop" shop for quality disc brake conversions, brake boosters, master cylinders, and proportioning valves. 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. Wilwood's new Combination Proportioning Valve substantially simplifies mounting, plumbing, wiring and brake proportioning adjustments on vehicles with custom brake systems. or unplug the wire to the valve near the master cyl. 6) Fill the proportioning valve with brake fluid and reinstall the valve on the car. AutoZone offers Free In-store Pickup for Chevrolet Brake Proportioning Valve. This helps prevent rear wheel lock up as the vehicle's weight is shifted toward the front wheels. This is the Own A 2001 Dodge Ram 1500 With Abs Brakes. Classic Industries offers a wide selection of Brake Components for your 1972 Chevrolet Truck. Or get a couple of manual valves from Tilton or Wilwood and adjust the rear brakes to perform the way you want. (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 reason there is a proportioning valve is to limit the rear brakes so they wont lock up, this is especially true in trucks. It does not allow any pressure to the disc brakes until a pre-determined pressure has been reached. If you've had you're rear brake lines off you definetly will want to bleed that one. Bleeding the ABS brake system only on 1995 C/K trucks only, Help!!!!! 16 Answers. I 'm trying to determine if I have a proportioning valve problem. When it comes to your Chevrolet Impala, you want parts and products from only trusted brands. AC Delco Brake Proportioning Valve With the AC Delco brake proportioning valve, keeping the brake assembly in tip-top shape is more manageable. Proportioning Valve Intentionally blank: Related Parts. 346 results for chevy brake proportioning valve Save chevy brake proportioning valve to get e-mail alerts and updates on your eBay Feed. A problem occurring in the brake system is as serious as it gets. The problem with the proportioning valve is it only affected the rear wheels. or unplug the wire to the valve near the master cyl. this would happen as you bleed off almost all the peddle travel. Brake proportioning valve General. While pulling vacuum on a rear cyl, you should see fluid dropping in the rear reservoir. This happened to me last year when I rebuild my brakes. The adjustable proportioning valve is used to set rear brake pressure to reduce rear wheel lockup on front wheel drive vehicles. Skip to main content. The proportioning valve - as its name implies - proportions the brake fluid so that more fluid goes to the wheels that do the most braking. So, it looks like the valve wil. They go inline to your back brakes. Wasn't long till I got no fluid out of either rear brake cylinder. proportioning function of the mechanical proportioning valve in the base brake system. im wanting to know if i can go without installing a proportioning valve since the truck is being used strictly as an offroad truck at this time, and wont be street driven. Fast shipping with low price guarantee. As the brake pedal is pressed further, line pressure increases and the proportioning valve closes, limiting the flow of fluid to the rear brakes. If you don't have, see if you can borrow a vacuum pump for the brakes. 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. it is my understanding that all Chevy GMC Ford have same issue with brake line. Google 1993 toyota pickup service manual if you don't have an fsm. CCI offers a brake line kit. 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. Get great deals on eBay!. It can accurately detect exactly where the problem is and allow the tech to fix it the first time, saving time, energy, guesswork and embarrassment when the customer comes back. finally asked about the light and was told it could be an indication of a more serious problem with my hydraulic system. brake proportioning valve is reading a problem for the brakes you can bleed rear brakes they might have air in them chck you rear wheel cyl. I had a leaky prop. You can purchase one if you want to pay the money. Want an affordable yet high-quality Chevrolet K1500 Brake Proportioning Valve? Shop now and enjoy our lowest price guarantee and access to the best brands in the industry!. if you had to "reset" the. If the pedal dropped on down the. Cap is plain black rubber and replaces the origina 1967 1968 1969 : $3. As the brake pedal is pressed further, line pressure increases and the proportioning valve closes, limiting the flow of fluid to the rear brakes. New reproduction 1974-1977 Corvette brake system proportioning valve. A brake proportioning valve allows you to adjust the pressure rise in the rear brakes, giving you more control and better performance. Disc brake Camaros use: NO residual pressure valve in the disc side of the master cyl. GM Disc Drum Brake Brass Proportioning Valve Street Rod Classic Car & Truck. Depending on what's going on on the outlet side of your P-valve, you may be proportioning the front brakes. Easy to use parts catalog. Get great deals on eBay!. Proportioning Valve: The Proportioning Valve part of the Combination Valve (seen above and labeled as A) is used to control the rear brakes. If the proportioning valve were to stop working, and equal braking force were applied to all four wheels during a stop, the rear wheels would lock up before the front wheels, which can be extremely dangerous while on the road. 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. But if you have a failure in one end of the system, that's when the problem arises. While doing this I had a screw up. We carry both disc/disc and drum/disc brake proportioning valves for Chevy, GMC, and Buick vehicles. Front Kits; Front & Rear Kits; Wheel Kit Only. Find 1984 CHEVROLET C10 Summit Racing® Brake Proportioning Valves SUM-760185 and get Free Shipping on Orders Over $99 at Summit Racing! Summit Racing® brake proportioning valves keep the proper amount of brake fluid pressure applied to your front and rear wheels. This year i had alot of problems with the rear wheels not getting alot of power, almost unsafe amount of power. Learn more about the most common brake issues and their solutions, here. How do you reset the proportioning valve in order to turn off the brake light on the dash? I have read how on here a long time ago but cant remember how or where to find it. cab silverado ; one day I turned my truck off and got out and could hear an electric motor running. Installing a Wilwood adjustable brake Proportioning Valve: OK, let’s say your swapping out your old drum brake rear axle for a disc version, and you gotta make the brakes work, right?. The combination valve is two valves in one. 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. rear brakes do not lock up before the front brakes. One part of your Nissan Pathfinder is the Brake Proportioning Valve. The "real" test will be when you brake heavily. Disc and Drum Brake Proportioning Valves: a long name, but essential to restoring the braking system for your 1947-1987 Chevy or GMC truck. I then took it to the local Chevy dealer who has had it for a week and they also cannot figure out the problem. The combination valve is a metering valve, failure warning switch, and a proportioning valve in one assembly and is used on disc brake applications. Having EARLY rear wheel lock up is a sign of a malfunctioning proportioning valve. All Other GMC S15 Brake Proportioning Valve. I just got the valve off and oh boy what a chore. it blocks off that circuit so. RESTORATION. Without a properly adjusted proportioning valve, the drum brakes will lock up before the discs do which can result in handling problems. 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. A brake proportioning valve helps you control brake balance and ensures your rear wheels will not lock up during heavy braking. CarComplaints. You must have simple understand of your Pathfinder Brake Proportioning Valve that you can find some problem correct in time. I'm having problems getting leaks to stop around the proportioning valve since I did the Granada swap. Then I blew out a brake line. 631290 - JEGS Proportioning Valves is rated 5. that runs to a vacuum boost chamber under the driver side of the cab. This I think is what's stopping the pedal from actually dropping when pressure is released at the bleeding wheel. what you can do in this situation is pump up the brake pedal several times, hold it down and have. Find Classic Performance Brake Proportioning Valves PV-2 and get Free Shipping on Orders Over $99 at Summit Racing! Classic Performance brake proportioning valves are designed to ensure that proper brake fluid pressure is supplied to the front and rear wheels. We also recommend the addition of a 10 lb residual valve (RPV10) to the rear drum. Order yours online today and pick up from the store. The electronic brake distribution system replaces the hydraulic proportioning valve. 1974 pontiac firebird/transam proportioning valve (combo valve - used on 1967-72 cars with front disc brake conversion & 71-81 cars with front disc brakes & rear drum) Price: $70. This valve helps them to lock up right before the rear brakes do which is essential in proper and safe braking systems. Whenever work on the brake system is done it is possible that the brake warning light will come on and refuse to go off when the work is finished. The rear contains the adjustable proportioning valve and the maximum rear pressure adjustment. If you have antilock brakes, you will have a problem bleeding if air is in the line ABOVE the proportioning valve in the brake line. the system is a single line master cyl. was this the original problem to start with ??? if it was and the problem is still there you have missed something. Quote Reply Topic: Brake proportioning valve Posted: Apr/24/2014 at 4:31pm SO i have swapped my 70 AMX front discs from drums to 4 pot bendix discs, well the calipers are in need of replacing (I have some from calipers online on the way) but my concern is the proportioning valve from what I have searched for on this site the valve needs to be. Then I blew out a brake line. Chevy Brake Lines, Prebent, Front, Use With Non-Power Brakes & GM Style Proportioning Valve, 1955 Combined Cancer/Birth Defect WARNING This product can expose you to chemicals including Cadmium which is known to the State of California to cause cancer, birth defects or other reproductive harm. 2004 | 2 Door DX, 2 Door DX (SIDE SRS), 2 Door DX (VALUE PACKAGE), 2 Door DX (VP SIDE SRS), 2 Door HX, 2 Door HX (SIDE SRS), 4 Door DX, 4 Door DX (AIR CONDITIONER), 4 Door DX (SIDE SRS), 4 Door DX-VP (VALUE PACKAGE), 4 Door DX-VP (VP SIDE SRS) | KA 4AT, KA 5MT, KA CVT. Works on all GM non adjustable style proportioning valves and combination valves. A prime example is SCCA A Sedan (AS). 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!. OER Parts offers a wide selection of Brake Components for your 1968 Chevrolet Camaro. AutoAnything offers FREE SHIPPING & One-Year Lower Price Guaranteed on Chevy Brake Proportioning Valve. Proportioning valves are frequently used in cars to reduce the brake fluid pressure to the rear brakes which are known as Brake Proportioning Valve. These are built for long lasting durability and trouble free use. 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. Remember, vacuum assist brake units require sufficient vacuum to operate correctly. So, the last resort was disconnecting the brake line from the top of the valve. Buy a 2004 Chevrolet Silverado 1500 Brake Proportioning Valve at discount prices. They say money can't buy happiness. I am unable to get any brake pedal in spite of repeatedly bleeding the system. I had a leaky prop. Easy to use parts catalog. The "real" test will be when you brake heavily. These 3 components consist of a metering or hold-off valve, a proportioning valve, and a pressure differential switch. if necessary, adjust fluid pressure. Front Kits; Rear Kits; Front. The valve on 4 wheel drum brakes is not really a proportioning valve. A spool or stem slides back and forth inside the piston bore of the proportioning valve, according to the pressure it receives. the key here is that they should be different How to check. A kink in the check valve hose will also result in this hard brake pedal condition. The threads in the aluminum valve body come out with the fitting thus ruining the valve body. Order yours online today and pick up from the store. Most all aftermarket brake companies have them. 8) Install the rubber cap on the proportioning valve so the pipe plug will be covered. If you don't have, see if you can borrow a vacuum pump for the brakes. Front Kits; Rear Kits; Front. Too much proportioned to the front brakes causes warpage and sudden vehicle jerk. Rear brake proportioning valve. We carry a wide array of proportioning valves to help you with your disc brake conversion. or is open to air. If you find that the. it blocks off that circuit so. With zero or low pressure in the brake line, the valve is open, allowing brake fluid to flow easily through the valve. The problem with the proportioning valve is it only affected the rear wheels. AutoAnything offers FREE SHIPPING & One-Year Lower Price Guaranteed on Chevy Brake Proportioning Valve. Thought it was something to do with a faulty e brake (even rho the e brake worked). Buy a 2004 Chevrolet Silverado 1500 Brake Proportioning Valve at discount prices. Wasn't long till I got no fluid out of either rear brake cylinder. Like a human body, the absence of one part or system can render your vehicle futile. Swapping Out Front Drums For Discs. Danchuk # 16941 will work on any 1955-1957 classic Chevy with a disc brake conversion installed. The proportioning valve modulates the pressure to the rear brakes. K_: I have a 1967 Chevelle which had all drum brakes. GM Disc Drum Brake Brass Proportioning Valve Street Rod Classic Car & Truck. Proportioning Valve. Please filter the Brake Proportioning Valve results by choosing a vehicle. 1974 pontiac firebird/transam proportioning valve (combo valve - used on 1967-72 cars with front disc brake conversion & 71-81 cars with front disc brakes & rear drum) Price: $70. 1988 Chevrolet S10. Re: Proportioning Valve questions/problems. GM Original Equipment™ Brake Proportioning Valve by ACDelco®. Part information, vehicle fitment, and availability for Dorman OE Solutions 905-953 Brake Proportioning Valve. CarComplaints. Classic Industries offers a wide selection of Brake Components for your 1977 Chevrolet Truck. in vice on bench and worked the master cyl. Personally, I believe one of my workers tightened the brake lines too tight and messed up the flared fittings in the valve. Click here to download Installation Instructions for this part. DRP 2001 Chevrolet Corvette 2001 BRAKES Anti-Lock/TCS - Corvette. Finding the right Chevrolet Astro Brake Proportioning Valve mustn't be a hassle. Brake Differential Proportional Valve problem of Chevrolet Tahoe. In disc brakes a 2 lb. Vehicles with front disc and rear drum brakes have proportioning valves located on the brake line between the front and rear brakes. CAUTION 1: Brake fluid will damage your paint. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. 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. This helps prevent rear wheel lock up as the vehicle's weight is shifted toward the front wheels. 2003 Chevy Tracker - Brake Bleeding woes Master has one line that goes to the proportioning valve from the back part of the master. I wouldn't hesitate if it was easy on and. I built a pressure bleeder with the blueprints the DREMU gave me (thanks!) bled it twice to get the brake light to go out. I figure the cylinder in the valve shifted and cut off flow to the rear. The metering valve and brake failure warning switch operate the same as those in the two function combination valve previously described. I didn't gravity bleed the brakes like I was told to do. It can accurately detect exactly where the problem is and allow the tech to fix it the first time, saving time, energy, guesswork and embarrassment when the customer comes back.