OPERATOR'S MANUAL MAINTENANCE

Section E - Hydraulics
Service Procedures
Pressure Testing - General
E-216 E-216
9803/9880-3
Pressure Testing - General
Confirmation of the Oil Temperature
Confirm the oil temperature is between 45°C - 55°C using
the self check function. If the temperature is low use the
following warm-up procedure.
Warming-up Procedure
1 Turn the throttle control to mid-range and make sure
the work mode is set to E.
2 Run the engine until the coolant temperature gauge
reads within the normal (green) range.
3 Set the servo isolator switch to ON to enable the
hydraulic servo controls to be operated.
4 Operate the bucket control slowly until it reaches one
end of its travel and leave it there for 10 seconds.
5 Operate the bucket control slowly to the other end of
its travel and leave it there for 10 seconds.
6 Repeat steps 4 and 5 for 10 minutes to warm up the
hydraulic circuit.
7 Operate the excavating controls three to five times in
each direction to distribute warm hydraulic oil around
the system.
Note: All pressure testing to be carried out with the engine
set at minimum engine revs unless otherwise stated.