NIGHTSHADE
15th-November-2006, 11:20 PM
Drum brake rebuild for dummies.
Wheel Cylinder:
Disassemble the cylinder. Using a bar clamp, 17mm socket and a 1 1/8" socket. Press the smaller socket through the cylinder and push the inner workings into the larger socket. This is a 1" cylinder, for other sizes different sockets may be used.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/cylinder1.jpg
Disassembled wheel cylinders.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/cylinder2.jpg
Clean pistons and hone the cylinders using a brake hone. If any of the inside surface of the cylinder is pitted, it should be replaced to prevent leakage.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/cylinder3.jpg
Re-assemble the cylinders using a new spring and cup kit.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/cylinder4.jpg
Wheel cylinder rebuild kits $8ea Replacement cylinders $41-$110 Savings of $66-$204 to rebuild vs. replace.
Drums, yes they are 4 lug.
Start with your original drums. Check vs. factory specifications to ensure that they are safe to use.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/drum1.jpg
Sandblasted.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/drum2.jpg
Painted.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/drum3.jpg
Wheel bearing races.
Use a 1" socket and extension to drive out the outer bearing race. And a punch to drive out the inner bearing race and seal. Notice the freshly turned braking surface.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/bearing1.jpg
Take one of each race and using a bench grinder, grind off 1/16" of the outer surface and save. In the pic, the front races are ground and the rear are not.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/bearing2.jpg
Clean the bearing mounting surface in the drum, being sure to grind down any flashing left behind from the punch. Using the 1 1/8" socket and the perspective “modified” race, drive the new races into the brake drum.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/bearing3.jpg
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/bearing4.jpg
Bearings.
Pack the new bearings with grease. I found the “Handy Packer” from CarQuest to be very easy to use.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/packing1.jpg
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/packing2.jpg
Install bearings and seals to the drum.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/packing3.jpg
Clean brake hardware and replace as necessary, pay close attention to the adjusting assemblies. Replace shoes as needed.
Before.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/oldbrakes.jpg
After cleaning, new shoes and installation.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/newbrakes.jpg
Install the drum and tighten to factory specs. 12 foot pounds and loosen to fit the cotter pin. Should be less then 1/8" of movement.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/finished.jpg
Cylinder rebuild $16
Drum turning $16
Shoes $18
Bearings $85
Total rebuild $135.00
Wheel Cylinder:
Disassemble the cylinder. Using a bar clamp, 17mm socket and a 1 1/8" socket. Press the smaller socket through the cylinder and push the inner workings into the larger socket. This is a 1" cylinder, for other sizes different sockets may be used.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/cylinder1.jpg
Disassembled wheel cylinders.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/cylinder2.jpg
Clean pistons and hone the cylinders using a brake hone. If any of the inside surface of the cylinder is pitted, it should be replaced to prevent leakage.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/cylinder3.jpg
Re-assemble the cylinders using a new spring and cup kit.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/cylinder4.jpg
Wheel cylinder rebuild kits $8ea Replacement cylinders $41-$110 Savings of $66-$204 to rebuild vs. replace.
Drums, yes they are 4 lug.
Start with your original drums. Check vs. factory specifications to ensure that they are safe to use.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/drum1.jpg
Sandblasted.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/drum2.jpg
Painted.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/drum3.jpg
Wheel bearing races.
Use a 1" socket and extension to drive out the outer bearing race. And a punch to drive out the inner bearing race and seal. Notice the freshly turned braking surface.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/bearing1.jpg
Take one of each race and using a bench grinder, grind off 1/16" of the outer surface and save. In the pic, the front races are ground and the rear are not.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/bearing2.jpg
Clean the bearing mounting surface in the drum, being sure to grind down any flashing left behind from the punch. Using the 1 1/8" socket and the perspective “modified” race, drive the new races into the brake drum.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/bearing3.jpg
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/bearing4.jpg
Bearings.
Pack the new bearings with grease. I found the “Handy Packer” from CarQuest to be very easy to use.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/packing1.jpg
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/packing2.jpg
Install bearings and seals to the drum.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/packing3.jpg
Clean brake hardware and replace as necessary, pay close attention to the adjusting assemblies. Replace shoes as needed.
Before.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/oldbrakes.jpg
After cleaning, new shoes and installation.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/newbrakes.jpg
Install the drum and tighten to factory specs. 12 foot pounds and loosen to fit the cotter pin. Should be less then 1/8" of movement.
http://i19.photobucket.com/albums/b182/nightshade63/Assembly%20and%20rebuilds/finished.jpg
Cylinder rebuild $16
Drum turning $16
Shoes $18
Bearings $85
Total rebuild $135.00