NOTE: Master cylinder installation must allow the shaft to completely extend (retract) when no load is applied. This failure can result in many of the following problems.

TROUBLE

PROBABLE CAUSE

CORRECTION

1. Unable to obtain sufficient hydraulic brake pressure or spongy pedal	Air in hydraulic system	Check for source, then bleed hydraulic system
	Brake pedal binding	Check for freedom of movement of brake pedal and master cylinder

2. Excessive pedal travel	Incorrect Installation	Refer to Installation Instructions
	Leak in system—brake, master cylinder, fittings, or lines	Locate leak and repair
	Defective master cylinder	Repair or replace
	Back plate bolts loose	Torque bolts to proper value

3. Brake Drag	Piston jammed in caliper	Remove caliper and repair cylinder or piston
	Foreign matter wedged in brakes	Locate and remove
	Master cylinder not releasing hydraulic pressure	Repair or replace master cylinder
	Parking brake valve defective	Repair or replace parking brake valve
	Foreign matter lodged between torque pins and torque plate bushings	Clean and inspect — replace if necessary
	Bent torque plate	Replace torque plate
	Bent torque pins	Replace torque pins

4. Rapid disc and/or pad wear	Dragging brakes	Refer to Trouble #2
	Excessive rusting, scoring, or pitting of brake disc	Clean or replace disc
	Excessive back plate deflection caused by bent bolts or over torquing of bolts	Check torque of bolts and replace bolts if bent

5. Brakes won't hold.	Improper conditioning of brake pads	Condition pads IAW Installation Instructions
	Contaminated pads	Replace pads
	Insufficient hydraulic pressure	Refer to Trouble #1
	Brake pad carburized (overheated)	Replace pads