Warm Up - Hitachi ZW140-6 Operator's Manual

Warm Up

IMPORTANT: Right after the engine starts, the engine
speed will be kept to slow idle speed for maximum
35 seconds when the coolant, hydraulic oil or
transmission oil temperature is low, or for 3 seconds
at normal temperature even if accelerator pedal (3) is
operated.
d
WARNING: After starting the engine, start the
machine operation only after confirming that the
engine speed changes by operating accelerator pedal
(3).
Otherwise, the machine or the front attachment may
unexpectedly start moving, possibly causing accidents
such as a crash.
d
CAUTION: Operating the machine without warming
up operation causes damage to the engine and
hydraulic components. Be sure to perform warm
up operation not only to protect the hydraulic
components from being damaged but also to ensure
safe operation.
If the machine is operated excessively with the hydraulic oil
temperature below 20 °C (68 ºF), damage to the hydraulic
components may result. After starting the engine, sufficiently
perform warm up operation as described below before
operating the machine until the hydraulic temperature
increases to higher than 20 °C (68 ºF).
1. Run the engine at slow idle speed without operating
accelerator pedal (3) for about 3 to 5 minutes without
load.
2. Increase the engine at medium speed and raise the
bucket above the ground. Alternately turn control lever
(1) to the tilt position and the neutral position for 10
seconds. (Do not operate control levers other than the
bucket control lever at this time.)
OPERATING ENGINE
1
3-11
3
MNDB-01-001
MNDB-01-005