Warming-Up Operation - Hitachi EX 3600-6 Operator's Manual

WARMING-UP OPERATION

IMPORTANT: The proper engine operating coolant
temperature and machine operating hy-
draulic oil temperature are correspond-
ing to the blue zone (A) of the coolant
temperature gauge (1) and hydraulic oil
temperature gauge (2), respectively. If
the machine is operated excessively
when the coolant and hydraulic oil tem-
perature are lower than the middle of the
white zone (B), damage to the engine
and hydraulic component may result.
Start the engine and warm up the machine until the needles
of the each gauges enter the middle of the white zone (B)
in the following procedures before starting to work.
1. Run the engine at slow idle for 5 minutes.
2. Increase the engine speed to middle speed by oper-
ating the engine speed control dial (3). Run the en-
gine for 5 minutes with the bucket held in the
rolled-out (tilted-out) position.
(Do not operate other functions than the bucket at this
time.)
3. Increase the engine speed to the maximum speed.
Run the engine for 5 to 10 minutes with the bucket
rolled-in (tilted-in) or arm rolled-in (cylinder extend).
(Do not operate other functions than the bucket or
arm at this time.)
4. Operate the bucket and arm respectively until the
needles of the each gauges enter the middle of the
white zone (B).
OPERATING THE MACHINE
5-9
A
B
A
B
1
M18M-01-012
2
M18M-01-013
3
M18M-01-004
M18G-01-040