10.3 Tanks and Accumulators – 10 Common Hydraulics
Maintenance Manual Ottawa T2 4x2
mm mm mm mm mm mm
10 Common Hydraulics
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System Description
The hydraulic system of the current production Ottawa tractors
is composed of three subsystems. They are the boom (hoist),
cab tilt and power steering. The common link among these
three subsystems is the shared reservoir, return filter and hy-
draulic fluid. With the exception of these items, all subsystems
operate independently. The three subsystems have their own
control valves and output actuators (cylinders).
The power steering is an open-centered circuit; that is, hydrau-
lic oil flows continuously through the center of the control valve
even while the steering wheel is not moving.
Power steering and the boom systems use the same hydraulic
pump. The pump is equipped with a priority valve that directs
the first four gallons per minute of flow to the steering circuit.
10.3
Tanks and Accumulators
10.3.1 Reservoir
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Description
The standard hydraulic reservoir has a 20-gallon capacity. It is
fitted with a level sight gauge and a breather.
W A R N I N G
The hydraulic fluid in the system is under pressure.
Care should be taken whenever the system is opened.
Loosen fittings slightly and allow pressure to bleed
off before removing hoses. Safety glasses must be
worn when working on the hydraulic system.
Failure to heed this warning may result in serious per-
sonal injury or property damage.
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 ...