Type E EZ-Stop Split Bus Disk Brake Kit Instructions

Type E EZ-Stop '63-'67 Split Bus Disk Brake Kit Instructions.

This kit was designed to be an affordable and simple split bus disk brake kit that FITS STOCK 14" and 15" BUS WHEELS!!  We designed this kit to be an easy bolt-on install with all of the required bits and pieces to make the install a breeze.  Installation will require basic tools and knowledge of your vehicle.  You will need to have an understanding of the front wheel bearing removal and replacement, and brake bleeding procedures.  If you are unsure, please consult your factory service manual, or have a professional install the kit for you.

 

Before you start, you will need to visit you favorite local auto parts store and get the rest of the heavy parts for the kit.  These are the quantities, part numbers, and applications for the brake rotors, calipers, and pads.  These are Napa part numbers, but most any decent store will be able to cross reference the number, or just look them up by application. 

 

Rotors

Here a couple part numbers you can take to your parts store to have them cross reference. 

ACDelco 18A87A
Bendix 141233
Centric Parts 121.62013
NAPA 85727
Raybestos Brakes 5064
Wagner BD60627

Application is a 1985 Chevy Camero front brake rotor.

Quantity 2.

They usually have a few different grades.  You can also order these in drilled, slotted, or performance versions online.  Pick the grade or style that suits your needs and budget.

 

Calipers

Here a couple part numbers you can take to your parts store to have them cross reference. 

ACDelco 1721458 front left caliper
ACDelco 1721457 front right caliper
Raybestos RWC4218 front left caliper
Raybestos Brakes RWC4217 front right caliper 

The application for the calipers is a 1989 Chevy Celebrity with the GM Brake Code JA2 Or JA8; Medium And Heavy Duty Brakes.

MAKE SURE TO USE THE "JA2 OR JA8" MEDIUM AND HEAVY DUTY CALIPER OPTION.  The light duty JA1 calipers will NOT work with this kit!

Quantity 1 each side.

Make sure to check the price on the cores since you do not have cores to return.  Get calipers with the least expensive core charge. There are a few different grades of calipers, so pick the ones that fits your preference and budget.  Also make sure to get calipers listed as "w/hardware".  These will come with the bolt/pins and banjo bolts for the hoses.  

If your calipers do not come with the pins and bushings, you will need to get a Dorman HW5033 kit.

 

Pads

 

Here is a list of a few different brake pad manufactures part numbers that will cross reference. 

ACDelco 171-542
Bendix  PMD215IM
Centric Parts 105.02150
NAPA ET7136M
Raybestos Brakes BD215M
Wagner SX7136

Application is 1989 Chevy Celebrity front brake pad set.  For the 10.26" rotor HD brake option. 

MAKE SURE TO USE THE "JA2 OR JA8" MEDIUM AND HEAVY DUTY 10.26" ROTOR BRAKE OPTION.  The light duty pads will not work with this kit. 

There is a huge selection of brake pads available.  Low/Mid/High grade, all depend on price, noise, stopping, and longevity.  Pick whichever will suit your needs the best. 

Quantity 1

 

You might also want to pick up a bottle of brake fluid while you are there.  You will need it during the brake bleeding procedure. 

 

 Installation

-To start the install, lift the front of your bus high enough to remove the wheels, and place sturdy jack stands under the beam. 

-Remove the front wheels.

-Remove the speedometer cable from the drivers side, and then dust caps.

-Remove the spindle lock nuts.

-Remove the brake drum.

-Remove the 4 bolts holding the brake backing plate to the spindle, and hang the backing plate off to the side, leaving the rubber brake hose attached.

-Do any desired cleaning or painting to the spindle now.  Inspect the spindle where the bearing race's ride, and make sure there is no excessive wear.  Also clean the spindle threads good.

-Now you can begin the install of the new parts. 

-Bolt the new caliper bracket to the spindle with the included m10x25mm bolts.  The bracket need to point towards the rear, and be offset towards the center of the vehicle. 

 

This is what the passenger side should look like .

 

-Remove the new bearings from their boxes, and pack them with a good wheel bearing grease.  Install the inner bearing into the rotor.  The thin spacer included needs to be installed against the inner bearing, with the chamfer pointing away from the bearing.  I like to use a little grease between it and the bearing to hold it in place.  Last, lube and install the wheels seal into the back of the rotor. 

-Pack and install the smaller outer bearing in the hub.

-Carefully slide the rotor over the spindle shaft, and rotate it as it gets near the end to help the seal onto its surface.   Pay attention to the wheel seal, and make sure it goes up over the large diameter shoulder on the spindle spud. 

-Re-install the spindle washer and the spindle nuts.  Tighten them down according to the factory service manual.

-Make sure the rotors spin nice and smooth. 

-Install the grease caps.  The cap with the square hole goes on the drivers side.  Then re-install the speedo cable on the drivers side. 

-Install the new brake pads into the new caliper. 

-Install the calipers over the rotor and into the caliper bracket.  The calipers are sided and you need to make sure the bleeders are pointing up.  

-Tighten the caliper bolts.

-Remove the metal clip and remove the original rubber brake hose from the hard line at the frame. 

-Quickly install the new rubber hose between the hard line at the frame, and the new caliper.

-Tighten down the connections on the brake hose. 

-Make sure the rotor still spins nice.  A slight drag on the new brake pads will be fine, but there should be no binding.

-If you have already upgraded to a dual master cylinder, check to see if you have a proportioning valve on the outlet to the front wheels.  If so, you will need to remove it.  If you haven't upgraded the master cylinder, do that now. 

-You should now be ready to bleed the brakes according to the factory service manual. 

-Reinstall your wheels and you are ready to drive.