DRUM BRAKE SERVICE

Clean Brake DustBrake Shoe ReplacementCut drumsBrake Shoe Adjustment

Two Types of Drum Brakes

Duo-Servo self-energizing brake.

Balanced brake.

Drum Brake Inspection

Job #1 clean off dust.Look at brake shoes for amount of lining material.Check hardware for wear and damage.Mike out brake drum.Look oil seal leak at drive axle on rear vehicles.

SERVICING DUO-SERVO BRAKES

Always Clean Brake Dust First!Remove Brake ShoesClean Backing Plate and LubricateHang Shoes and ReassembleAdjust Properly (use the safe-set)Clean Linings

SERVICING BALANCED BRAKES

Clean Brake Dust First!Remove Brake ShoesClean Backing Plate and LubricateHang ShoesAdjust ProperlyClean Linings and Drum

SERVICING BRAKE DRUMS

Measure drum and check against spec’sMount drum to lathe arborAlways use a silencer bandMake coarse and fine cutsClean, adjust shoes and remount