Genie Z-30/20N Service And Repair Manual page 8

Table of Contents
viii
Primary Boom Components ............................................................................. 25
4-1 Cable Track.................................................................................................... 25
How to Repair the Primary Boom Cable Track ............................................... 25
4-2 Primary Boom ................................................................................................ 26
How to Remove the Primary Boom ................................................................ 26
How to Disassemble the Primary Boom ......................................................... 28
4-3 Primary Boom Lift Cylinder ............................................................................ 29
4-4 Primary Boom Extension Cylinder ................................................................. 31
4-5 Platform Leveling Master Cylinder ................................................................. 33
Secondary Boom Components ........................................................................ 34
5-1 Secondary Boom ........................................................................................... 35
5-2 Secondary Boom Lift Cylinders ..................................................................... 40
Hydraulic Pump .................................................................................................. 43
6-1 Auxiliary and Function Pump ......................................................................... 43
Manifolds ............................................................................................................ 44
7-1 Function Manifold Components ..................................................................... 44
7-2 Valve Adjustments - Function Manifold ......................................................... 48
How to Adjust the System Relief Valve .......................................................... 48
How to Adjust the Primary Boom Down Relief Valve ..................................... 48
How to Adjust the Secondary Boom Down Relief Valve ................................ 49
How to Adjust the Primary Boom Extend Relief Valve ................................... 49
How to Adjust the Turntable Rotate Relief Valve ........................................... 50
7-3 Jib Boom and Platform / Jib Boom Rotate Manifold Components ................ 51
7-4 Valve Coils ..................................................................................................... 53
How to Test a Coil Diode ................................................................................ 54
Turntable Rotation Components ...................................................................... 55
8-1 Turntable Rotation Hydraulic Motor ............................................................... 55
Steer Axle Components .................................................................................... 56
9-1 Hub and Bearings .......................................................................................... 56
How to Remove the Hub and Bearings .......................................................... 56
How to Install the Hub and Bearings .............................................................. 56
Non-steer Axle Components ............................................................................. 57
10-1 Motor Controller ........................................................................................... 57
Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N
September 2015
Part No. 1268498