Question about 2000 Dodge Caravan

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I've been told that the rear brake metering valve and the spring loaded adjuster are bad, What are they and how do I replace them

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It is actually called the proportioning valve,and it does exactly what the name suggests,it proportions the amount of pressure/fluid going to the rear brakes so that they dont lock up before the fronts(helps with steering in emergency brake conditions)fitting is a one for one operation but i am not sure re your car as to the sequence of bleeding them after fitting the unit (its NOT staightforward as rear/front,as with older cars)maybe another "expert" could help us both.

Posted on Jul 16, 2010

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Where is the location of brealine proportioning valve 96 linclon towncar


I am not familiar with the car. Brake proportioning valve is usually positioned these days above or near the rear suspension.

Brake proportioning can be by g-valve, pressure limiting valve or most often these days by a load sensing limiting valve. The latter is connected to the rear suspension by a spring and/or an adjustable link. In some cases there are two valves; one each side for independent rear suspension.
The checking and adjustment of the linkage is generally part of the routine maintenance and is often maladjusted by ill-informed but well-meaning people.

I have seen the g-valve fitted on the front bulkhead by some manufacturers. In theory this type can be fitted almost anywhere.

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Why is it that my Mitsubishi mighty max's rear brake grips first before the front brake?


there is a proportioning valve to the rear brakes that only allows them to operate fully under load or heavy braking. If it is faulty then full brakes will be applied to the rear which will allow them to lock up first.
Check pad/shoe condition and rear drum/shoe adjustment as well

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93 ford F800 park brake will not hold


The first thing to check is the amount of linings on the shoes . If less than 50 % replace the linings/ shoes. Next check the adjustment is right up . Park brake operation should never rely on hydraulics for the simple reason that hydraulics leak and the brakes come off. It will probably be spring loaded with the electric over hydraulics holding the brakes off when moving

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Rear brakes


Removal
1.Remove rear wheel and tire assembly from vehicle.

2.Remove rear brake drums from hub and bearing assemblies after loosening the two brake drum screws.
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3.Be sure that the parking brake pedal is in the release(most upward) position.

4.Completely loosen square nut of the rear parking brake cable. Then create slack in the rear parking brake cables.
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5.Remove adjuster spring from adjust lever and brake shoe.
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6.Remove adjust lever and turn the adjusting wheel of adjuster assembly to the direction of the arrow as shown.
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7.Remove the strut spring and the lower retracting spring from the brake shoe.
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8.Remove the upper return spring from the brake shoe.
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9.Remove brake back plate hold down spring and pin from the leading brake shoe assembly.

10.Remove the leading brake shoe. Then remove the adjuster assembly, strut and anchor spring from the trailing brake shoe.
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11.Remove the trailing brake shoe from the brake back plate after removing hold down spring and pin.
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12.Remove the trailing brake shoe from the rear parking cable.
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13.Remove parking pivot lever from the leading brake shoe.
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Replacement
1.Lubricate the eight shoe contact areas on the back plate and anchor.
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2.Install the trailing brake shoe to the rear parking cable.

3.Install trailing brake shoe on brake back plate and install the trailing brake shoe hold down spring and pin on the brake shoe.

4.Tighten the square nut of rear parking cable.

5.Install the anchor spring then install adjuster assembly, and strut.

6.Install leading brake shoe on brake back plate.
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7.Install the brake shoe upper return spring, strut spring and the lower retracting spring to the brake shoe.

8.Properly rotate the adjusting wheel of adjuster assembly to the direction of the arrow in as shown.
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9.Install the adjuster spring on the adjust lever and leading brake shoe assembly.

10.Install the leading brake shoe hold down spring and pin on the brake shoe.
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11.Adjust brake shoes assemblies so as not to interfere with brake drum installation.

12.Install the rear brake drums on the hubs.

13.Check and adjust whether the pedal stroke in the specification.(Refer to section BR Gr./On-vehicle service/Pedal stroke of parking brake)

14.Install wheel and tire.

15.Push the parking brake pedal to the floor once and release pedal. This will automatically remove the slack from and correctly adjust the parking brake cables.

16.Test the vehiche on the road. The adjust will continue the brake adjustment during the road test of vehicle.

Inspection
1.Inspect the disassembled parts for wear, rust or damage.

2.Measure the thickness of brake shoe lining.
Standard : 0.17 in (4.5 mm)
Minimum : 0.04 in (1 mm)

3.If the shoe lining is less than minimum or shows signs of uneven wear, replace new one.
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4.Measure the inside diameter of the brake drum.
Standard : 10 in (254 mm)
Maximum : 10.07 in (256 mm)
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5.If the inside diameter of the brake drum is more than maximum or shows signs of uneven wear, replace new one.

6.Inspect the lining and drum for proper contact. If the contact condition is improper, repair it with a grinder or replace the brake shoe assembly.
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Aug 14, 2013 | 2002 Kia Sedona

1 Answer

Constantly replacing front brakes


Depends on why the rear brakes are not working.
Could be several things including the master cylinder and the fact the rear brakes are way out of adjustment, or worn out.
You would need to pull the rear wheels and take a look.

Jan 24, 2013 | 2004 Pontiac Grand Am

2 Answers

How to remove brake rotors on a 1996 ford explorer


How to replace the rear brake pads on a 1995 through 2001 Ford Explorer The system utilizes a drum-in-hat type rear brake rotor. The integral drum allows the use of a drum-and-shoe type parking brake system. All other components are similar to their front disc brake components Remove the two bolts on either side of the brake hose with the rubber boots. Do not remove the four bolts where the axle ties in. The two bolts to be removed require a 10mm socket/wrench. Loosen the pads from the caliper Rotor Removal In order to take the rotors off (replace with new or have them machined), it is best to loosen the emergency brake shoes. To do this, behind the rotors, in the back there is a rubber plug, remove that and you can use a screw driver to engage the teeth of the adjusting screw, turn it clockwise to loosen, usually 10-20 teeth. Usually this means turn it downward. After this, it may still be difficult to get the rotors off without tapping them. Use a rubber mallet and hit them from behind. Before really whacking the rotor, make sure you have loosened the adjusting screw enough. It may take heavy swings of the rubber hammer to do this. It will eventually break loose. Parking Brake You might want to check the parking brake while you are here. To remove:
  • Remove the rear disc brake rotor.
  • Remove the outboard return spring.
  • Remove the adjusting screw spring.
  • Remove the rear brake shoe hold-down spring and pin.
  • Remove the brake shoe adjusting screw and nut.
  • Remove the front brake shoe hold-down spring and pin.
  • Remove both parking brake shoes and the inboard return spring.
  • Check the parking brake lever for excessive wear and replace as necessary.
To install:
  • Position the front parking brake shoe to the backing plate and install the hold-down pin and spring.
  • Install the rear parking brake shoe with the inboard return spring.
  • Position the brake shoe adjuster screw and nut on the shoes and install the rear shoe hold-down pin and spring.
  • Install the brake shoe adjuster spring.
  • Install the outboard return spring.
  • Adjust the parking brake shoes and install the rotor, caliper and wheel.
  • Lower the vehicle and tighten the wheel lug nuts to 100 ft. lbs. (135 Nm).
ADJUSTMENT
  • Measure the inside of the drum portion of the rear brake rotor
  • Remove the rear disc brake rotor.
  • Using Brake Adjustment Gauge D81L-1103-A or equivalent, measure the inside diameter of the drum portion of the rear disc brake rotor.
  • Subtract 0.020 in. (0.508mm) from the first measurement, adjust the brake shoes to that size
  • Adjust the parking brake adjuster screw until the outside diameter of the parking brake shoes measures 0.020 in. (0.508mm) less than the drum measurement.
  • Install the rear disc brake rotor.
Reassembly Reassembly is easy. Put new or machined rotors back on by sliding them over the lugs (they should slide on easily.) Loosen bleeder valve (having a catch bottle handy is good). Push calipers in slowly (using a c-clamp or large channel lock pliers), close bleeder valve. Put on pads. Lubricate metal clips with small amount of anti-seize. Re-adjust the emergency brake by turning the opposite direction from loosening. Refill the brake master cylinder

Aug 09, 2010 | 1996 Ford Explorer

2 Answers

Having a leak with the right rear breaking components; it looks like it's leaking from some kind of a break distribution block. There's an adjustment screw and a 1-inch-in diameter return-spring; I don't...


That will be the load compensating valve.It will have some sort of rod connecting it from the axle housing to the chassis.When the load in the vehicle is light,less braking is allowed to the rear axle.This lessens the chance of brake lock up.Heavier load and the rear brake power will be increased.They do sometimes leak.Before you take it apart,mark the positions of all the adjustments so it goes back together in the same positions.Hope this helps you

Oct 24, 2009 | 1996 Nissan Pickup

1 Answer

I need a schematic for the rear brakes on an F150 super cab with 4.6L automatic trans 4wheel drive


Drum, Rear Brake System Standard Rear Brake
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Item Part Number Description 1 2069 Brake Shoe Hold-Down Spring Pin 2 — Rear Wheel Cylinder Retaining Bolt (2 Req'd) 3 — Washer (2 Req'd) 4 — Anchor Pin (Part of 2211) 5 — Wheel Cylinder 6 2028 Brake Shoe Anchor Pin Guide Plate 7 2A637 Parking Brake Lever 8 2296 Brake Shoe Retracting Spring (Short) 9 2296 Brake Shoe Retracting Spring (Long) 10 2200 Rear Brake Shoe and Lining (Secondary) 11 — Washer 12 2106 Parking Brake Lever Pin Retainer 13 — Brake Shoe Adjusting Lever Cable Guide 14 2A642 Primary Brake Shoe Parking Brake Lever Link 15 2A601 Parking Brake Link Spring 16 2068 Brake Shoe Hold-Down Spring 17 2A176 Brake Shoe Adjusting Lever 18 2048 Brake Shoe Adjusting Screw Socket 19 2047 Brake Shoe Adjusting Screw Nut 20 2041 Brake Adjusting Screw 21 2049 Brake Shoe Adjusting Screw Spring 22 2200 Rear Brake Shoe and Lining (Primary) 23 2A178 Brake Shoe Adjusting Lever Cable 24 2211 Brake Backing Plate
Heavy Duty Rear Brake
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Item Part Number Description 1 — Rear Wheel Cylinder Retaining Bolt 2 00538 Lock Nut 3 2212 Rear Brake Backing Plate 4 2262 Rear Wheel Cylinder 5 2A642 Primary Brake Shoe Parking Brake Lever Link 6 2A601 Parking Brake Link Spring 7 2A637 Parking Brake Lever 8 2106 Parking Brake Lever Pin Retainer 9 — Parking Brake Lever Bolt 10 — Secondary Shoe Assembly 11 2A179 Brake Shoe Adjusting Lever Cable Guide 12 2068 Brake Shoe Hold-Down Spring 13 — Adjusting Lever Pin 14 — Adjusting Lever Return Spring 15 2A176 Brake Shoe Adjusting Lever 16 2047 Brake Shoe Adjusting Screw Nut 17 2049 Brake Shoe Adjusting Screw Spring 18 2041 Brake Adjuster Screw 19 — Primary Shoe Assembly 20 2068 Brake Shoe Hold-Down Spring 21 2200 Rear Brake Shoe and Lining 22 2035 Brake Shoe Retracting Spring 23 2A178 Brake Shoe Adjusting Lever Cable 24 2092 Brake Adjusting Hole Cover 25 2069 Brake Shoe Hold-Down Spring Pin
The rear drum brakes:
  • Have internal shoes that expand against the brake drum (1126).
  • Are a single-anchor type.
  • Are actuated by one rear wheel cylinder (2262).
  • Have two pistons in the rear wheel cylinder (2261). One exerts force against the upper end of the primary shoe; the other exerts force against the upper end of the secondary shoe.
  • Adjust rear brake shoes and linings (2200) automatically.
  • Need manual brake adjustment if the adjusters are not operating properly or after the rear brake shoes and linings have been replaced.
When the brake pedal is applied, hydraulic fluid pressure forces the pistons in the rear wheel cylinder outward, moving the rear brake shoes and linings against the brake drum.
The rear drum brake system includes the parking brake mechanism. Refer to Section 206-05 .

Apr 04, 2009 | 1997 Ford F150 Regular Cab

1 Answer

Rear brakes scrubbing on 1998 chevy venture van


Removal Procedure Tools RequiredJ 38400
Caution: Keep fingers away from rear brake shoe springs to prevent fingers from being pinched between spring and shoe web or spring and backing plate.
  1. Remove the brake drum. Refer to Brake Drum Replacement

  2. 142285.gif
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    Notice: Do not over stretch the adjuster spring. Damage can occur if the spring is over stretched.
  3. Use the J 38400 in order remove the adjuster spring (1). Disengage the adjuster spring loop from the tab on the adjuster actuator.
  4. 2.1. Remove the loop end of the adjuster spring from the adjuster actuator. 2.2. Remove the straight end of the adjuster spring from the secondary brake shoe.
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  5. Use the J 38400 in order to spread the brake shoes apart.
  6. Remove the adjuster.
Installation Procedure

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  1. Use the J 38400 in order to spread the brake shoes apart.

  2. 178990.gif
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    Important: Ensure that the adjuster (2) engages the brake shoes (4 and 5), the park brake actuator (3), and the adjuster actuator (1) properly.
  3. Install the adjuster.

  4. 142285.gif
    tif.gif
    Notice: Do not over stretch the adjuster spring. Damage can occur if the spring is over stretched.
  5. Install the adjuster spring (1).
  6. 3.1. Install the straight end of the adjuster spring into the secondary brake shoe. 3.2. Install the loop end of the adjuster spring to the adjuster actuator.
  7. Install the brake drum.

Dec 06, 2008 | 1999 Chevrolet Venture

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