7.11 Diagnosis (Boom) – 7 Load Handling
Maintenance Manual Ottawa T2 4x2
7.11 Diagnosis
(Boom)
page
–
Diagnosis
Components
•
Boom Lift Cylinders
•
Control Valve
•
Filter
•
Hydraulic Pump
•
Hydraulic Relief Valve
•
Reservoir
•
Wet Line Kit Connection
Maximum Pressure — Hydraulic Relief Valve
Boom Diagnosis
Vehicle
Maximum Pressure
All Ottawa T2 4x2 and 6x4 tractors with 4-inch cylinders
2000 psi (138 bar)
W A R N I N G
Do NOT feel for leaks. Hydraulic fluid under high
pressure may have knife-like characteristics. Failure
to heed this warning could result in severe personal
injury.
Observation
Cause
Action
Cylinders leak down
Damaged seals or cylinder wall
Replace cylinder.
Optional: Install seal kits.
Worn control valve
Replace.
Optional: Install seal kits.
Drops slightly, momentarily before
lifting
Load check seat or control valve
spring malfunction
Clean or replace as needed.
Lifts slowly
Pump inlet restricted
Remove restriction.
Worn pump
Replace.
Internal leakage in control valve
Replace.
Optional: Install seal kits.
Internal leakage in cylinders
Replace cylinder.
Optional: Install seal kits.
External leakage from hoses
Replace leaking hose.
Summary of Contents for Ottawa t2
Page 1: ......
Page 47: ...38 0 8 Electrical Instruments 0 Machine Complete Maintenance Manual Ottawa T2 4x2 ...
Page 53: ...44 1 11 Start Stop 1 Engine Maintenance Manual Ottawa T2 4x2 ...
Page 55: ...46 2 Transmission Maintenance Manual Ottawa T2 4x2 ...
Page 57: ...48 3 Driveline Axle Maintenance Manual Ottawa T2 4x2 ...
Page 73: ...64 5 4 Diagnosis Hydrostatic Steering 5 Steering Maintenance Manual Ottawa T2 4x2 ...
Page 81: ...72 7 11 Diagnosis Boom 7 Load Handling Maintenance Manual Ottawa T2 4x2 ...
Page 83: ...74 8 Control System Maintenance Manual Ottawa T2 4x2 ...
Page 145: ...136 11 2 Safety 11 Common Electric Maintenance Manual Ottawa T2 4x2 Chassis Power Board ...
Page 153: ...144 12 5 Air Dryer 12 Common Pneumatics Maintenance Manual Ottawa T2 4x2 ...
Page 155: ...146 D Error Codes Maintenance Manual Ottawa T2 4x2 ...
Page 261: ...252 0 4 Fastener Torque Values F Technical Data Maintenance Manual Ottawa T2 4x2 ...