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Z-25/8
Genie Z-25/8 Service Manual
150 pages
Manual
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Service
Manual
T
echnical
Publications
First
Edition
Third
Printing
Part
No.
41314
•
Z
-20
8
Z
-20
8
Z
-25
8
2
Table of Contents
Safety Rules
3
Theory of Operation
5
Table of Contents
7
Specifications
13
Hydraulic Specifications All Models
16
Hydraulic Hose and Fitting Torque Specifications
17
Scheduled Maintenance Inspections
19
Maintenance Inspection Report
22
Scheduled Maintenance Procedures
23
Inspect the Operator's and Safety Manuals
24
Inspect the Decals and Placards
24
Inspect for Damage and Loose or Missing Parts
25
Check the Hydraulic Oil Level
25
Check for Hydraulic Leaks
26
Test the Platform and Ground Controls
27
Test the Auxiliary Power Operation
28
Test the Tilt Sensor
28
Test the Drive Speed Limit Switch
29
Perform 30 Day Service
31
Check the Batteries
32
Inspect the Electrical Wiring
33
Inspect the Tires and Wheels (Including Castle Nut Torque)
34
Test the Key Switch
34
Test the Emergency Stop Buttons
35
Test the Ground Control Override
35
Test the Horn
36
Test the Foot Switch
36
Test the Drive Brakes
37
Test the Drive Speed - Stowed Position
38
Test the Drive Speed - Raised Position
39
Test the Alarm Package (if Equipped)
40
Perform Hydraulic Oil Analysis
41
Check the Electrical Contactors
41
Replace the Hydraulic Tank Return Filter
41
Bleed the Jib Boom Rotator
43
Test or Replace the Hydraulic Oil
44
All Functions will Not Operate
49
Pump Motor will Not Operate
52
Auxiliary Functions Inoperative
54
All Functions Inoperative, Power Unit Starts and Runs
56
Ground Controls Inoperative, Platform Controls Operate Normally
57
Platform Controls Inoperative, Ground Controls Operate Normally
58
Boom up Function Inoperative
61
Boom down Function Inoperative
63
Jib Boom up Function Inoperative
65
Jib Boom down Function Inoperative
68
Jib Boom Rotate Left Function Inoperative
71
Jib Boom Rotate Right Function Inoperative
74
Steer Left Function Inoperative
77
Steer Right Function Inoperative
78
All Drive Functions Inoperative, All Other Functions Operate Normally
79
Drive Forward Function Inoperative
82
Drive Reverse Function Inoperative
83
Machine will Not Drive at Full Speed
84
Machine Drives at Full Speed with Platform Raised
87
Brake Release Function Inoperative
88
Electrical Schematic
89
Hydraulic Schematic
89
Electrical Components
90
Electrical Symbols Legend
92
Abbreviation Legend
93
Electrical Schematic
95
Z-20/8 (before Serial Number 125)
95
Z-20/8N (before Serial Number 968)
95
Z-20/8 (after Serial Number 124)
97
Z-20/8N (after Serial Number 967)
97
Platform Control Box Wiring Diagram
101
Z-20/8N (before Serial Number 968)
101
Platform Control Box Wiring Diagram
102
Z-20/8N (after Serial Number 967)
103
Power Cable Diagram
105
Hydraulic Symbols Legend
108
Hydraulic Schematic
109
Z-20/8 (before Serial Number 125)
109
Z-20/8N (before Serial Number 968)
109
Z-20/8 (after Serial Number 124)
111
Z-20/8N (after Serial Number 967)
111
Platform Controls
114
Joystick Controller
114
Foot Switch
117
Toggle Switches
118
Control Relays
119
Platform Components
121
Platform
121
Jib Boom Components
122
Jib Boom
122
Jib Boom Cylinder
124
Jib Boom Rotator
125
Boom Components
128
Boom
129
Boom Lift Cylinder
133
Ground Controls
134
Wago Components
134
Hydraulic Pumps
135
Auxiliary Pump
135
Main Function Pump
136
Manifolds
138
Function Manifold Components
138
Valve Adjustments - Function Manifold
140
Jib Boom and Jib Boom Rotate Manifold Components
142
Brake Release Hand Pump Components
143
Steering Axle Components
144
Yoke and Drive Motor
144
Steering Cylinder
146
Steering Bellcrank
147
Non-Steering Axle Components
149
Drive Brake
149
Other manuals for Genie Z-25/8
Operator's Manual
30 pages
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Genie Z-25/8 Specifications
General
Platform Capacity
227 kg
Turning Radius
2.03 m
Stowed Height
1.98 m
Platform Length
0.76 m
Max Platform Height
26 ft 1 in (7.95 m)
Stowed Length
18 ft 10 in (5.74 m)
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