Kalmar Ottawa t2, Maintenance Manual

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4.9 Diagnosis (Mechanical) – 4 Brakes 57
Maintenance Manual Ottawa T2 4x2
Slow release Treadle valve return slowed by dirt
and grime Clean and lubricate as needed.
Poor adjustment or poor lubrication Inspect. Adjust or lubricate as
needed.
Air line(s) restricted Inspect. Repair or replace as need-
ed.
Valve exhaust ports (e.g., treadle,
quick release, relay) plugged Inspect. Repair or replace as need-
ed.
Service brakes do not release Broken or weak shoe or chamber
spring Inspect. Repair or replace as need-
ed.
Treadle valve return slowed by dirt
and grime Clean and lubricate as needed.
Air line(s) restricted Inspect. Repair or replace as need-
ed.
Valve exhaust ports (e.g., treadle,
quick release, relay) plugged Inspect. Repair or replace as need-
ed.
Brakes grab Grease or oil on linings Determine source of grease or oil.
Repair as needed. Clean drums
and replace shoes.
Drum out of round Inspect. Repair or replace as need-
ed.
Defective valves Inspect. Repair or replace as need-
ed.
Actuating linkages (e.g., slack ad-
justers, push rods) bind Inspect. Repair or replace as need-
ed.
Uneven braking Poor adjustment or poor lubrication Inspect. Adjust or lubricate as
needed.
Grease or oil on linings Determine source of grease or oil.
Repair as needed. Clean drums
and replace shoes.
Broken diaphragm or return spring Inspect. Repair or replace as need-
ed.
Drum out of round Inspect. Repair or replace as need-
ed.
Brake chamber diaphragm leaking Inspect. Repair or replace as need-
ed.
Observation Cause Action