H
H
ydraulic system, warming up
WARNING
Risk of crushing injury.
The hydraulic system could respond slowly at low temperatures
and could cause unexpected machine movements.
Op
p
er
r
ate
e
car
r
ef
f
u
u
l
l
ly un
n
ti
i
l
l
th
h
e
e
hy
y
dr
r
aul
l
i
i
c
c
syste
e
m
m
has reache
e
d
op
p
er
r
ati
i
n
n
g te
e
m
m
pe
e
r
r
at
t
u
u
re.
When the oil is cold it is viscous, therefore the hydraulic functions
of the machine operate slower than when the oil is warm.
If one or more of the machine functions are forced against the
end-of-stroke position without having first warmed up the system,
this may result in unexpected movements and machine damage.
NO
O
T
T
E
E
!
During the warming up the operating control lockout lever must
be in its unlocked position.
NO
O
T
T
I
I
C
C
E
E
D
D
o
o
no
o
t
t
rus
s
h wa
a
rmin
n
g
g
of
f
th
h
e oi
i
l
l
, sin
n
ce fo
o
r
r
ced
d
war
r
min
n
g
g
can
n
damag
g
e
e
th
h
e
e
mac
c
hi
i
n
n
e.
.
1 Start the engine and leave it running at low idling for five
minutes (ten minutes at below —15 °C (5°F))
2 Turn the mode selector switch to working mode (W).
3 Increase the speed to approx. 1200 rpm.
4 Run the bucket cylinders piston rod to the outer end position
and at the same time, run the dipper arm out and in.
5 Check on the display unit if the bar graph for the oil
temperature is green (see
47
).
T
T
r
r
a
a
v
v
el
l
l
l
ing
g
a sho
o
r
r
t
t
di
i
sta
a
n
n
c
c
e
Moving the machine a short distance (e.g. when loading onto or
off a trailer) may be done without a complete warm-up. This
operation must be done with great care. Under these conditions
the engine speed must not exceed 1200 rpm and the travel speed
control switch should be in creep position.
V1103348
A
B
A — Control lockout lever in unlocked position
15
5
0
0
Op
p
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e
r
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in
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r
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c
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ti
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o
o
n
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s
Hy
y
dr
r
a
a
u
u
l
l
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,
,
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g
up
p
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-rent.com
