2 – 14
OPERATION
2-6 AFTER STARTING THE ENGINE
Keep engine speed low until the engine oil
pressure warning lamp goes out. If does
not go out within 10 seconds, stop the
engine and investigate the cause before
starting the engine. Failure to do so, can
cause engine damage.
With any piece of hydraulically operated
equipment, it is EXTREMELY IMPORTANT
that the hydraulic fluid be thoroughly warmed
fluid-up BEFORE any work is begun. A warm-
up period is time well spent in preventive
maintenance.
Practice the following warm-up procedure
before attempting full load operations.
1. Allow the engine to warm up at LOW IDLE
for at least five minutes.
Engage and disengage attachment
control levers to help speed warm-up of
hydraulic components.
2. To warm up the hydraulic oil, move the
engine throttle lever to medium engine
speed. Run the engine for about five
minutes while intermittently holding the
bucket control lever in the bucket dump
position.
Operate the bucket control lever for 10 to
15 seconds and then return the control
lever HOLD position to ten seconds.
3. Move the engine throttle lever to
maximum engine speed. Run the engine
for an additional five minutes while
intermittently holding the bucket dump
position.
This will allow the oil to reach relief
pressure, which causes it to warm more
rapidly.
Cycle all controls to allow warm oil to
circulate through all cylinders and lines.
4. Observe the OK warning monitor
frequently during the operation.
Be sure to perform the pro-operation
warm-up procedure whenever the
hydraulic oil temperature is lower than
20ºC at start-up.
2-7 “BREAK-IN” OPERATION
In case of the new machine, as the severe
operation from the beginning will have a bad
influence upon the machine life, perform the
enough break-in operation as described the
right table.
Hour meter Load
Up to 10 hours About 60% load
Up to 50 hours About 80% load
After 50 hours Full load
CAUTION
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