Manifolds; Function Manifold Components - Genie Z-25/8 Service Manual

Section 7 • Repair Procedures

Manifolds

7-1

Function Manifold Components

The function manifold is mounted to the slide-out component tray located at the non-steer end of
the machine.
Index
No. Description
1 3 position 4 way solenoid valve ......... A ........... Steering left/right .............................. 10-12 ft-lbs (14-16 Nm)
2 Diagnostic fitting ............................................... Testing
3 Check valve ....................................... B ........... Main pump ........................................ 25-30 ft-lbs (34-41 Nm)
4 2 position 4 way solenoid valve ......... C ........... High/low drive speed ........................ 10-12 ft-lbs (14-16 Nm)
5 Orifice, 0.030 in (0.76 mm) ............... D ........... Brake circuit
6 Shuttle valve ...................................... E ........... Brake circuit ...................................... 10-12 ft-lbs (10-15 Nm)
7 2 position 2 way N.O. poppet valve .. F ........... Pump unload ............................................. 4-6 ft-lbs (5-8 Nm)
8 2 position 2 way N.O. solenoid valve G ........... Jib/rotate bypass .............................. 25-30 ft-lbs (34-41 Nm)
9 Relief valve, 1400 psi (97 bar) .......... H ........... Drive circuit ....................................... 35-40 ft-lbs (47-54 Nm)
10 2 position 3 way solenoid valve ......... I ............ Drive reverse .................................... 10-12 ft-lbs (14-16 Nm)
11 2 position 3 way solenoid valve ......... J ............ Drive forward .................................... 10-12 ft-lbs (14-16 Nm)
12 2 position 2 way N.O. poppet valve .. K ........... Steer dump ............................................... 4-6 ft-lbs (5-8 Nm)
13 2 position 2 way N.O. poppet valve .. L ........... Brake unload ............................................. 4-6 ft-lbs (5-8 Nm)
14 Orifice, 0.030 in (0.76 mm) ............... M .......... Brake circuit
15 Priority flow regulator
0.75 gpm (2.8 L/min) ......................... N ........... Steer/jib boom rotate ........................ 10-12 ft-lbs (14-16 Nm)
16 Relief valve, 3500 psi (241 bar) ........ O ........... System relief ..................................... 35-40 ft-lbs (47-54 Nm)
17 Check valve ....................................... P ........... Main pump ........................................ 25-30 ft-lbs (34-41 Nm)
18 2 position 3 way solenoid valve ......... Q ........... Boom down ....................................... 25-30 ft-lbs (34-41 Nm)
19 2 position 3 way solenoid valve ......... R ........... Boom up ........................................... 25-30 ft-lbs (34-41 Nm)
20 Relief valve, 2500 psi (172 bar) ........ S ........... Steering relief .................................... 35-40 ft-lbs (47-54 Nm)
21 Relief valve, 1500 psi (103 bar) ........ T ........... Boom down ....................................... 35-40 ft-lbs (47-54 Nm)
Plug Torque Specifications
Description Hex Size
1
SAE No. 2
3
SAE No. 4 /
16
7 - 26
Schematic
Item
Torque
/ 50 in-lbs / 6 Nm
8
13 ft-lbs / 18 Nm
Genie Z-20/8N & Genie Z-20/8 & Genie Z-25/8
Function
Description Hex Size
SAE No. 6
SAE No. 8
First Edition • Third Printing
Torque
1
/ 18 ft-lbs / 24 Nm
4
5
/ 50 ft-lbs / 68 Nm
16
Part No. 41314
Torque