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R Slaughter | profile | all galleries >> Drum brake assembly tree view | thumbnails | slideshow

Drum brake assembly

Assembly sequence for a "typical" GM drum brake
1966 GM half-ton pickup (Delco Shown, Bendix similar)
The parts pile, excl. park lever and pushrods. NOTE: colors are random paints I had on hand. Not color-coded.
The parts pile, excl. park lever and pushrods. NOTE: colors are random paints I had on hand. Not "color-coded".
Self adjuster  (SA arm) group
Self adjuster (SA arm) group
Adjuster wheel group
Adjuster wheel group
Where it all goes
Where it all goes
Park brake lever on the cable
Park brake lever on the cable
Start here:  lube park lever pin and wavy washer, install thru rear shoe, add the Jesus clip
Start here: lube park lever pin and wavy washer, install thru rear shoe, add the "Jesus clip"
 Lube Starwheel shaft & threads with chassis grease or moly lube; thread the adjuster together but do not tighten
Lube Starwheel shaft & threads with chassis grease or moly lube; thread the adjuster together but do not tighten
star wheel end goes toward rear shoe. NOTE! Left-hand threaded adjuster screw is for  RIGHT (passenger) side brake
star wheel end goes toward rear shoe. NOTE! Left-hand threaded adjuster screw is for RIGHT (passenger) side brake
spread shoes over axle, set against backplate
spread shoes over axle, set against backplate
put washer & cone spring on nail thru front shoe. Place  pushrods in cylinder
put washer & cone spring on "nail" thru front shoe. Place pushrods in cylinder
place strut and spring between shoes. Note position! It is installed in this pic exactly as it is shown in the parts pile above
place strut and spring between shoes. Note position! It is installed in this pic exactly as it is shown in the parts pile above
Lube contact areas on SA arm and pivot
Lube contact areas on SA arm and pivot
put guide on anchor. place SA arm with pivot on rear shoe with nail, tube washer & straight spring
put guide on anchor. place SA arm with pivot on rear shoe with nail, tube washer & straight spring
Add actuator link, follow with overide spring from arm to pivot (next pic)
Add actuator link, follow with overide spring from arm to pivot (next pic)
Place return spring under SA arm. note placement of pivot and link
Place return spring under SA arm. note placement of pivot and link
Press shoes against anchor. Install front shoe return spring to anchor.
Press shoes against anchor. Install front shoe return spring to anchor.
Install rear shoe spring to link as shown
Install rear shoe spring to link as shown