Tadano GR-700N, Service Manual

Page: 31 / 200

Y-2 Y-2
Adjusting Pressure (Hydraulic Pressure)
18
WY02-1720E
2.4 Slewing
[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
Slewing
relief valve
(U)
20.1±0.5 205±5 2920±70
1550
(MAX.)
1.Turn the PTO switch ON.
2. Apply the slewing lock.
3. Move the slewing lever at its full stroke
on the right and left side.
4. In this state, set the engine speed to
1550 min
-1
and check the pressure.
Slewing
overload
relief valve
(N)
22.6 230 3270 -
Already the pressure is set by the valve
manufacturer.
(Adjustment is not necessary.)
Hydraulic pilot control valve (for slewing)
Overload relief valve (N)
Relief valve (U)
Slewing table right side
Hydraulic pilot control valve
(for slewing)