Terex RT700 - Brake System Troubleshooting

TROUBLESHOOTING
INSUFFICENT BRAKE ACTION
CAUSE REMEDY
Worn brake linings................................................................................Replace brake pads.
Blocked, bent, or broken tubing or hose ...............................................Remove obstructions in line or replace faulty tubing.
Brake valve delivery pressure below normal........................................Clean and replace worn parts if brake valve is defec-
tive, replace unit.
Insufficient parking brake valve delivery pressure ...............................Clean and replace worn parts, or if valve is defective,
replace unit.
BRAKES RELEASE TOO SLOWLY WITH PEDAL RELEASED
CAUSE REMEDY
Weak or broken valve diaphragm return spring....................................Replace brake valve.
Relay or quick-release valve exhaust
ports obstructed .....................................................................................Clean or replace faulty unit.
ONE BRAKE DRAGS WITH PEDAL RELEASED
CAUSE REMEDY
Brake pad binding .................................................................................Remove pad, clean and lubricate
Weak or broken brake shoe return springs............................................Replace faulty spring
BRAKES ACT UNEVENLY OR GRAB WHEN PEDAL IS DEPRESSED
CAUSE REMEDY
Grease or oil on linings .........................................................................Clean linings or replace linings or pad assemblies.
Defective brake valve............................................................................Replace faulty unit.
Brakes need relining..............................................................................Replace brake pads.
Brake chamber diaphragm leaking........................................................Tighten all fittings; if caused by broken or faulty
unit, replace the unit.
BRAKES
RT700 Series Page 5 - 12 Issued: August 2003