Landoll 345D, Operator'S Manual

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5-4 F-482-0510 Edition
TROUBLESHOOTING
BRAKES RELEASE TOO SLOWLY Brakes need adjusting or lubrication Adjust or lubricate as needed
Brake rigging binding Align brakes or replace bent parts
Exhaust port or relay valve restricted or
plugged Clean valve
Tractor pressure too low Adjust to provide 105 psi min.
ALL BRAKES DO NOT RELEASE Air system improperly connected to tractor Tighten or adjust connections
Brake valve on tractor is applied Release brake
Relay emergency valve in emergency
position Check line pressure and check valve
Restricted tubing or line Locate restriction and remove
Defective tractor protection valve Troubleshoot tractor air system
Parking brakes locked Troubleshoot air system
Tractor pressure too low Adjust to provide 105 psi min.
INSUFFICIENT BRAKES Brakes need adjusting Adjust brakes
Brakes need lubricating Lubricate brakes
Brakes need relining Reline brakes
Low air pressure Troubleshoot air system
Defective relay emergency valve Repair or replace
Brakes overheeated Stop and allow brakes to cool, locate
cause of overheating
BRAKES GRABBING Grease on brake linings Reline brakes
Brake rigging binding Align brakes or replace bent parts
Defective brake valve on tractor Repair or replace valve
Defective relay emergency valve Repair or replace valve. Excessive
leakage with brakes released.
Relay emergency valve leaking Repair or replace valve
Leaking tubing or hose Replace defective part
EXCESSIVE LEAKAGE WITH BRAKES
APPLIED Relay emergency valve leaking Repair or replace valve
Leaking brake chamber diaphragm Replace diaphragm
Leaking tubing or hose Replace defective part
EXCESSIVE LEAKAGE WITH
EMERGENCY SYSTEM ONLY APPLIED -
NO LEAKAGE WITH NORMAL BRAKING Defective relay emergency valve Repair or replace valve
EXCESSIVE WATER PRESENT IN
BRAKE SYSTEM Reservoir not drained often enough Drain reservoir daily
EXCESSIVE OIL PRESENT IN BRAKE
SYSTEM Compressor on tractor passing excessive
oil Repair compressor
BRAKE WILL NOT APPLY PROPERLY Flat spot on cam roller or camshaft Replace and lubricate
BRAKE WILL NOT APPLY WHEN
EMERGENCY LINE IS DISCONNECTED Initial air pressure too low Allow air system to build up to minimum 90
PSI and stabilize
Defective relay valve Repair or replace valve
Air line leak Locate leak and repair
Brake chamber leak Locate leak and repair or replace
ABS WARNING LIGHT STAYS ON Refer to Rockwell WABCO ABS maintenance manual supplied with trailer for system
function and use of blink code diagnostics.
PROBLEM PROBABLE CAUSE SOLUTION