12-2
FRONT WHEEL/FRONT FORK/STEERING/BRAKE
TROUBLESHOOTING
Hard steering
● Steering bearing adjustment nut too tight.
● Faulty steering stem bearings.
● Damaged steering stem bearings.
● Insufficient tire pressure.
Steers to one side or does not track straight
● Unevenly adjusted right and left shock absorbers.
● Bent front forks.
● Bent front axle : wheel installed incorrectly.
Front wheel wobbling
● Bent rim.
● Worn front wheel bearings.
● Faulty tire.
● Axle nut not tightened properly.
● Wheel out of balance.
Soft suspension
● Weak fork springs.
● Insufficient fluid in front forks.
Hard suspension
● Incorrect fluid weight in front forks.
● Front fork air pressure incorrect.
● Bent fork tubes.
● Clogged fluid passage.
● Clogged anti-dive orifice.
Front suspension noise
● Worn slider or guide bushings.
● Insufficient fluid in forks.
● Loose front fork fasteners.
● Lack of grease in speedometer gear box.
Brake lever soft or spongy
● Air in hydraulic system
● Mixed brake fluid and wet
● Contaminated brake pad or disk
● Worn caliper piston seal
● Worn master cylinder piston seal
● Worn brake pad
● Contaminated caliper inside
● Caliper not sliding properly
● Worn brake pad or disk
● Low brake fluid level
● Clogged fluid passage
● Warped or deformed brake disk
● Sticking or worn caliper piston
● Sticking or worn master cylinder piston
● Contaminated master cylinder inside
● Bent brake lever
Brake lever hard
● Clogged brake system
● Sticking caliper piston
● Caliper not sliding properly
● Clogged fluid passage
● Worn caliper piston seal
● Sticking or worn master cylinder piston
● Bent brake lever
Brake drags
● Contaminated brake pad or disk
● Misaligned wheel
● Worn brake pad or disk
● Warped or deformed disk
● Caliper not sliding properly
● Hydraulic system contaminated with dust
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