Tadano GR-300EX-3, Service Manual

Page: 28 / 157

15
WY02-1792E
Y-2 Y-2
Adjusting Pressure (Hydraulic Pressure)
2.2 Telescoping
[NOTICE]
Oil temperature: 50±5°C (113 - 131°F) (Hydraulic oil: TADANO Hydraulic Oil LL)
Confirm set pressure on the crane information screen in the maintenance mode of AML.
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
(V)
18.6±0.5 190±5 2700±70 1900
(MAX.)
1. Turn the PTO switch ON.
2. Fully extend the 2nd boom.
3. Move the telescoping lever at its full stroke on
the extension side.
(Do not push the 3/top boom extending switch.)
4. In this state, set the engine speed to 1900 min
-1
and check the pressure.
Boom
retracting
(W)
20.6±0.5 210±5 2990±70 1900
(MAX.)
1. Turn the PTO switch ON.
2. Fully retract the boom.
3. Move the telescoping lever at its full stroke on
the retraction side.
4. In this state, set the engine speed to 1900 min
-1
and check the pressure.