CONTENTS
MOTION
BRAKING
PEDAL ACTION

PEDAL SOFT OR SPONGY




CONDITION(S)



POTENTIAL CAUSE(S)

CHECK THESE FIRST:

1. FAULTY RESIDUAL PRESSURE CHECK VALVE OR PISTON SEALS IN MASTER CYLINDER; CONFIRMED IF MASTER CYLINDER RESERVOIR FLUID LEVEL REMAINS CONSTANT
Have pressure check valve or piston seals professionally repaired or replaced.

2. EXTERNAL LEAK IN BRAKE HOSE, LINE OR FITTING; CONFIRMED IF MASTER CYLINDER RESERVOIR FLUID LEVEL DECREASES
Have brake hose, line or fitting professionally replaced.

3. AIR IN HYDRAULIC SYSTEM OR IMPROPER BRAKE FLUID (LOW BOILING POINT); VAPOR LOCK
Have brake fluid professionally bled and replaced. Be certain to use correct DOT-rated fluid to prevent boiling.

4. FAULTY SELF-ADJUSTER OR MALADJUSTED DRUM BRAKE SHOE
Have brake shoe professionally adjusted or self-adjuster serviced.

5. LOW BRAKE FLUID LEVEL
Add brake fluid.

CHECK THESE NEXT:

6. WEAK OR SOFT BRAKE HOSES
Have brake hoses professionally replaced.

7. WORN, CRACKED, OR OVERHEATED BRAKE DRUMS
Have brake drums professionally replaced.

8. BROKEN PEDAL PIVOT BUSHING
Have pedal pivot bushing professionally replaced.

9. LEAKING WHEEL CYLINDER; DRUM BRAKE LININGS CONTAMINATED BY BRAKE FLUID
Have wheel cylinder and brake linings professionally replaced.

10. BROKEN REAR AXLE GREASE SEAL; DRUM BRAKE LININGS CONTAMINATED BY GREASE
Have rear axle grease seal and brake linings professionally replaced.

CHECK THESE LAST:

11. LOOSE MASTER CYLINDER MOUNTING BOLTS
Have master cylinder mounting bolts professionally tightened.

12. MASTER CYLINDER BLEEDER SCREW OPEN
Have master cylinder bleeder screw professionally tightened.

13. ROUGH MASTER CYLINDER OR DISC CALIPER BORE
Have master cylinder or caliper bore professionally repaired.

14. INCORRECT DRUM BRAKE LININGS
Have correct brake linings professionally installed.

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