Landoll 345B Operator's Manual page 60

BRAKES (CONTINUED)
SYMPTOM
UNEVEN BRAKES
BRAKES APPLY TOO SLOWLY
BRAKES RELEASE TOO SLOWLY
ALL BRAKES DO NOT RELEASE
INSUFFICIENT BRAKES
BRAKES GRABBING
EXCESSIVE LEAKAGE WITH
BRAKES APPLIED
5-4
PROBLEM: REMEDY
See "SINGLE BRAKE DRAGGING OR LOCKED"
Restriction in hose: locate restriction and remove.
Worn brake linings: reline brakes.
Grease on linings: reline brakes.
Broken slack adjuster: replace slack adjuster.
Leaking brake chamber diaphragm: replace diaphragm.
Brakes need adjusting or lubrication: adjust or lubricate as
needed.
Low air pressure in brake system (below 105 PSI): check
tractor
air system.
Restricted tubing or hose: locate restriction and remove.
Defective relay valve: clean or replace.
Brakes need adjusting or lubrication: adjust or lubricate as
needed.
Brake rigging binding: align brakes or replace bent parts.
Exhaust port of relay valve restricted or plugged: clean
valve.
Tractor pressure too low: Adjust to provide 105 psi min.
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.
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 overheated: stop and allow brakes to cool, locate
cause of overheating.
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.EX-
CESSIVE LEAKAGE WITH BRAKES RELEASED
Relay emergency valve leaking: repair or replace valve.
Leaking tubing or hose: replace defective part.
Relay emergency valve leaking: repair or replace valve.
Leaking brake chamber diaphragm: replace diaphragm.
Leaking tubing or hose: replace defective part.