Document 57.4402.8200 - 1
st
Edition 03/2007
INDEX
GYRO 4020 - 4518
TECHNICAL SPECIFICATIONS
2
22
The check of the movement times of the cylinders
shall be done with the hydraulic oil at a temperature
of 60°.
To check the engine speed, the area easy to reach is
the external pulley of the output shaft.
BOOM LIFTING/LOWERING
2.2 CHECKING THE CYLINDER MOVEMENT TIMES
BOOM EXTENSION/RETRACTION
ATTACHMENT DUMPING
Lift
Lower
Extend
Retract
Roll-back
Dump
Gyro 4020
Time (s)
up
down
Max engine speed
17
11
Min. engine speed
44
30
Gyro 458
Time (s)
up
down
Max engine speed
17
11
Min. engine speed
44
30
Gyro 4020
Time (s)
out
in
Max engine speed
21,3
7,3
Min. engine speed
90
40
Gyro 458
Time (s)
out
in
Max engine speed
21,3
7,3
Min. engine speed
90
40
Gyro 4020
Time (s)
roll-back
dumping
Max engine speed
3,8
3,7
Min. engine speed
2
8,6
Gyro 458
Time (s)
roll-back
dumping
Max engine speed
3,8
3,7
Min. engine speed
2
8,6