Brake Trouble Diagnosis; Soft Brake Lever; Uneven Brake; Poor Brake Performance - Sym Symply50 Service Manual

13. BRAKE
TROUBLE DIAGNOSIS
DISK BRAKE

Soft brake lever

Air inside the hydraulic system
Hydraulic system leaking
Worn master piston
Worn brake pad
Poor brake caliper
Worn brake pad/disk
Low brake fluid
Blocked brake pipe
Warp/bent brake disk
Bent brake lever
Hard operation of brake lever
Blocked brake system
Poor brake caliper
Blocked brake pipe
Seized/worn master cylinder piston
Bent brake lever
DRUM BRAKE

Poor brake performance

Improper brake adjustment
Worn brake pad
Worn brake drum
Worn brake cam
Improper brake pad installation
Seized brake cable
Dirty brake pad
Dirty brake drum
Brake pad worn in brake cam area.
Poor contact between brake arm and
camshaft indent
13-4

Uneven brake

Dirty brake pad/disk
Poor wheel alignment
Clogged brake hose
Deformed or warped brake disk
Restricted brake hose and fittings
Tight brake
Dirty brake pad/disk
Poor wheel alignment
Deformed or warped brake disk
Brake noise
Dirty pad
Deformed brake disk
Poor brake caliper installation
Imbalance brake disk or wheel
Tight operation or low return speed of
brake lever
Worn/broken/crack return spring
Worn drum
Dirty brake pad
Brake seized caused from dirty brake
drum
Seized brake cable
Worn brake cam
Improper brake pad installation
Brake noise
Worn brake pad
Worn drum
Dirty brake pad
Dirty brake drum
SYM