18
WY02-2020E
Y-2
Y-2
Adjusting Pressure (Hydraulic Pressure)
2.3 Telescoping
[NOTICE]
Oil temperature: 50 ± 5°C (122 ± 9°F) (Hydraulic oil: TADANO Hydraulic Oil LL)
When not described to use the pressure check port, check the main pump pressure display on the AML
display panel.
Shift the control lever or switch while the engine is idling, then increase engine speed.
Item
(Mark)
Set pressure
Engine
speed
(min
-1
)
Check procedure
MPa
kgf/cm
2
psi
Boom
extending
(E)
16.7 ± 0.5 170 ± 5 2420 ± 70 2150
(MAX.)
1. Turn the PTO switch ON.
2. Turn the emergency telescoping key switch ON.
3. Disconnect the self-seal joint for telescoping
cylinder (extending side).
4. Energize the solenoid valve (for ESP telescoping
high-pressure selection) by the external power
supply (24V).
5. Move the telescoping lever at its full stroke on the
extension side.
6. In this state, set the engine speed to 2150 min
-1
and check the pressure.
Boom
extending
(F)
13.7 ± 0.5 140 ± 5 1990 ± 70 2150
(MAX.)
7. Disconnect the connector (CN232) of the
solenoid valve (for ESP telescoping
high-pressure selection).
8. Move the telescoping lever at its full stroke on the
extension side.
9. In this state, set the engine speed to 2150 min
-1
and check the pressure.
Boom
retracting
(G)
23.0 ± 0.5 235 ± 5 3335 ± 70 2150
(MAX.)
1. Turn the PTO switch ON.
2. Turn the emergency telescoping key switch ON.
3. Fully retract the boom.
4. Move the telescoping lever at its full stroke on the
retraction side.
5. In this state, set the engine speed to 2150 min
-1
and check the pressure.
Содержание GR-1600XL
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