Honda EP3 Service Manual page 634

Rapid brake pad wear. Vehicle vibration {after a long
drivel, or High, hard brake pedal
1 . D r i v e t h e v e h i c l e u n t i l t h e b r a k e s d r a g o r u n t i l t h e
pedal is high and hard. This can take 20 or more
brake pedal applications during an extended test
d r i v e .
2 . W i t h t h e e n g i n e r u n n i n g , r a i s e t h e v e h i c l e o n a l i f t ,
a n d s p i n a l l f o u r w h e e l s b y h a n d .
ls there btake drag at any of the wheels?
YES Go to step 3.
NO Look for other causes of the pad wear, high
p e d a l , o r v e h i c l e v i b r a t i o n . I
3. Turn the engine off, pump the brake pedal to
deplete the vacuum in the brake booster, and then
spin the wheels again to check for brake drag.
ls therc brake dtag at any ot the wheels?
YES-Go to step 4.
NO Replace the brake booster.I
4. Without removing the brake lines, unbolt and
separate the master cylinder from the booster, then
spin the wheels lo check for brake drag.
ls there btake drag at any of the wheels?
YES Go to step 5,
NO-Check the brake pedal position switch
adjustment and pedal free play.I
5. Loosen the hydraulic lines at the master cylinder,
then spin the wheels to check for brake drag.
ls there brake drag at any of the wheels?
YES Go to step 6.
NO- Replace the master cylinder.l
6. Loosen the bleeder screws at each caliper, then
spin the wheels to check for brake drag.
Is there brake drag at any of the wheels?
YES Disassemble and repair the caliper on the
w h e e l ( s ) w i t h b r a k e d r a g . l
NO Inspect brake hose (s)/line (s).
19-5