Section 4 • Repair Procedures
4 - 30
GR-20J • GR-26J
Part No. 227656
September 2016
Function Manifold
Index
Schematic
No.
Description
Item
Function
Torque
1
Filter,
Filter cap .................................................... H ......................... Suction filter ............................ 37 ft-lbs / 50 Nm
2
Solenoid valve, 2 position 4 way ............... B ......................... Steer/Turntable directional ..... 18 ft-lbs / 25 Nm
3
Check valve ............................................... I .......................... Blocks flow from auxiliary
pump to function pump . 29 ft-lbs / 40 Nm
4
Solenoid valve, 2 position 2 way ............... D ......................... Platform up ............................. 18 ft-lbs / 25 Nm
5
Solenoid valve, 2 position 4 way ............... C ......................... Turntable rotate left/right ........ 18 ft-lbs / 25 Nm
6
Solenoid valve, 2 position 2 way ............... E ......................... Platform down and jib down ... 18 ft-lbs / 25 Nm
7
Relief valve,
930 psi / 64 bar .......................................... G ......................... Platform up ............................. 18 ft-lbs / 25 Nm
8
Solenoid valve, 2 position 4 way ............... A ......................... Steer left/right ......................... 18 ft-lbs / 25 Nm
9
Relief valve,
2030 psi / 140 bar ...................................... F ......................... System relief ........................... 18 ft-lbs / 25 Nm
7-1
Function Manifold Components
The
function manifold is mounted underneath the hydraulic power unit.
