All Info About Auto Repairs
Your One Stop Source For All The Information You Need For Your Vehicles.

DIY: Drum Brakes

This is a good job for a moderately skilled DIY. It only takes about three hours to do and will save you quite a few bucks. Plus you will get the satisfaction of saying "I did it myself!"

More...
» Part 1
» Part 2
» Part 3
»
Part 4
 

Installation:

Type 1:
  • Lubricate parking brake lever fulcrum with suitable brake lube, then attach lever to secondary brake shoe. Ensure that the lever operates smoothly.
  • Lightly lubricate backing plate shoe contact surfaces with suitable brake lube.
  • Connect parking brake lever to cable and slide secondary brake shoe into position.
  • Connect wheel cylinder link to brake shoe (if equipped).
  • Slide parking brake lever strut behind axle flange and into parking brake lever slot, then place parking brake anti-rattle spring over strut.
  • Position primary brake shoe on backing plate and connect wheel cylinder link (if equipped) and parking brake strut.
  • Install anchor plate and position adjuster cable eye over anchor pin.
  • Install primary shoe return spring using brake spring pliers or equivalent.
  • Place protruding hole rim of cable guide in secondary shoe web hole, then holding guide in position, install secondary shoe return spring through cable guide and secondary shoe. Install spring on anchor pin using brake spring pliers or equivalent.
NOTE: Ensure cable guide remains flat against secondary shoe web during and after return spring installation. Also ensure secondary spring end overlaps primary spring end on anchor pin.
  • Using suitable pliers, squeeze spring ends around anchor pin until parallel.
  • Install adjuster screw assembly between primary and secondary brake shoes with star wheel on secondary shoe side.
NOTE: The left side adjuster assembly stud is stamped "L" and the right side is stamped "R". Be sure you don't mix them up or your brakes will not self-adjust.
  • Install shoe-to-shoe spring, then position adjusting lever spring over pivot pin on shoe web.
  • Install adjusting lever under spring and over pivot pin, then slide lever slightly rearward.
  • Install nails, springs and retainers.
  • Thread adjuster cable over guide and hook end of overload spring in lever. Ensure eye of cable is pulled tight against anchor and in a straight line with guide.
  • Install brake drum, tire and wheel assembly.
  • Adjust brakes.
  • If any hydraulic connections have been opened, bleed brake system.
  • Check master cylinder fluid level, and replenish as necessary.
  • Check brake pedal for proper feel and return.
  • Lower vehicle and road test. Do not severely apply brakes immediately after installation of new brake linings or permanent damage may occur to linings, and/or brake drums may become scored. Brakes must be used moderately during first few hundred miles of operation to ensure proper burnishing of linings.
Type 2:
  • Lightly lubricate support plate shoe contact surfaces with suitable brake lube.
  • Position leading shoe return spring on shoe, then while holding shoe away from support, engage return spring in support plate and swing shoe end into position under anchor.
  • Install parking brake lever on trailing shoe.
  • Install trailing shoe return spring on shoe, then while holding shoe away from support, engage return spring in support plate and swing shoe end into position under anchor.
  • Spread shoes apart and install adjuster screw assembly. Ensure forked end enters the leading shoe with curved tines facing down.
  • Using a suitable pair of pliers, install hold-down springs and shoe to anchor springs.
  • Pull back parking brake cable return spring slightly to expose cable, then slide parking brake cable into parking brake lever and release spring.
  • Install brake drum and bearings. Refer to individual car chapter for wheel bearing adjustment procedure.
  • Adjust brakes.
  • Install tire and wheel assembly.
  • If any hydraulic connections have been opened, bleed brake system.
  • Check master cylinder level, replenish as necessary.
  • Check brake pedal for proper feel and return.
  • Lower vehicle and road test. Do not severely apply brakes immediately after installation of new brake linings or permanent damage may occur to linings and/or brake drums may become scored. Brakes must be used moderately during first several hundred miles of operation to ensure proper burnishing of linings.
Type 3:
  • Lightly lubricate anchor plate shoe contact surfaces with suitable brake lube.
  • Assemble automatic adjuster screw assembly, return spring and shoe-to-shoe spring to brake shoe assembly.
  • Position lining assembly near anchor plate, then assemble parking brake lever to trailing shoe webbing. Secure with C-clip.
  • Install lining assembly onto anchor plate. When positioned, back off adjuster nut to seat brake shoe ends in wheel cylinder.
  • Install hold-down springs.
  • Position adjuster lever, then using suitable pliers, install adjuster lever spring.
  • Install brake drum and bearings.
  • Adjust brakes.
  • Install tire and wheel assembly.
  • If any hydraulic connections have been opened, bleed brake system.
  • Check master cylinder level, and replenish as necessary.
  • Check brake pedal for proper feel and return.
  • Lower vehicle and road test. Do not severely apply brakes immediately after installation of new brake linings or permanent damage may occur to linings and/or brake drums may become scored. Brakes must be used moderately during first several hundred miles of operation to ensure proper burnishing.

More...
» Part 1       » Part 2       » Part 3       » Part 4

Additional Information provided courtesy of
ALLDATAdiy.com and Warranty Direct
© 2000-2007 Vincent T. Ciulla

FREE Newsletter. Sign Up Now!

Help keep this site free.



Copyright (c)2006



Search All Info About


Related Articles