Skyjack SJ85 AJ User manual

SERVICE
MANUAL
ARTICULATING BOOM
August 2020
ANSI/CSA, CE, AS
229044ADA
SJ85 AJ
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This manual is for MEWPs with Serial Numbers:
SJ85 AJ: A303 000 001 - A303 999 999
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SJ85 AJ 229044ADA
The Safety Alert Symbol identifies important safety
messages on MEWPs, safety signs in manuals or
elsewhere. When you see this symbol, be alert to
the possibility of personal injury or death. Follow the
instructions in the safety message.
DANGER
DANGER indicates an imminently hazardous
situation which, if not avoided, will result in death
or serious injury.
WARNING
WARNING indicates a potentially hazardous
situation which, if not avoided, could result in death
or serious injury.
CAUTION
CAUTION indicates a potentially hazardous
situation which, if not avoided, may result in minor
or moderate injury. It may also be used to alert
against unsafe practices.
IMPORTANT
IMPORTANT indicates a procedure essential for
safe operation and which, if not followed, may
result in a malfunction or damage to the MEWP.
THIS SAFETY ALERT SYMBOL MEANS ATTENTION!
BECOME ALERT! YOUR SAFETY IS INVOLVED.
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SJ85 AJ 229044ADA
Section 1 – Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1 Read and Heed ...................................................................11
1.1-1 Mobile Elevating Work Platform (MEWP) Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1-2 Purpose of Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1-3 Use of Equipment ..............................................................11
1.1-4 Manual ......................................................................11
1.1-5 Service Policy and Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1-6 Operator Safety Reminders, Warnings and Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.2 Maintenance and Service ...........................................................12
1.2-1 Maintenance and Inspection Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.2-2 Owner’s Annual Inspection Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.2-3 Replacement Parts .............................................................12
1.2-4 Maintenance and Service Safety Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.2-5 Hydraulic System & Component Maintenance and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.2-6 Hydraulic Maintenance Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.2-7 Railing Maintenance and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.3 Scheduled Maintenance ............................................................15
1.3-1 Service Bulletins ...............................................................15
1.3-2 Maintenance and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.3-3 Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.4 Owner’s Annual Inspection Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
1.5 Pre-Delivery/Maintenance Inspection Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
1.6 Scheduled Maintenance Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.6-1 Electrical .....................................................................18
1.6-2 Hydraulic .....................................................................18
1.6-3 Labels .......................................................................18
1.6-4 Limit switches .................................................................18
1.6-5 Engine Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1.6-6 Control Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1.6-7 Platform Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1.6-8 Boom Assembly ...............................................................27
1.6-9 Optional Equipment/Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
1.7 Function Tests ....................................................................29
Section 2 – Maintenance Tables and Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.1 Standard Hose Numbering System ...................................................31
2.2 Torque Specifications for Fasteners (US) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
2.3 Torque Specifications for Fasteners (Metric) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table of Contents
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SJ85 AJ229044ADA
2.4 Torque Specifications for Hydraulic Couplings & Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2.5 Axle Torque Specifications ..........................................................36
2.6 Axle Maintenance Intervals ..........................................................37
2.7 MEWP Torque Specifications ........................................................38
2.8 Tire Specifications .................................................................39
2.9 Floor Loading Pressure .............................................................40
2.10 Specifications & Features - Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
2.11 Specifications and Features - Performance & Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
2.12 Hydraulic Specifications ............................................................43
2.13 Specifications and Features - Engines & Fluids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
2.14 Reach ...........................................................................46
2.15 Dimensions ......................................................................47
2.16 Axle Oscillation Zones ..............................................................47
Section 3 – System Component Identification and Schematics . . . . . . . . . . . . . . . . . . . . 49
3.1 Electrical Symbol Chart .............................................................50
3.2 Hydraulic Symbol Chart ............................................................51
3.3 Wire Numbers and Color Codes ......................................................52
3.4 Wire Numbers and Color Codes - Additional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
3.5 Hydraulic Parts List ................................................................54
3.6 Electrical Parts List ................................................................57
3.7 Brake Manifold Port Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
3.8 Jib Manifold Port Identification .......................................................62
3.9 Main Manifold - Hose Port Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
3.10 Main Manifold - Hydraulic Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
3.11 Main Manifold - Electrical Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
3.12 SGE Harness Connection ...........................................................66
3.13 Jib and Platform Rotate Harness Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
3.14 Footswitch Harness Connection ......................................................68
3.15 Main Manifold Harness .............................................................69
3.16 Platform to Base Control Cables .....................................................70
3.17 Engine Control Wiring - Deutz TD2.9L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
3.18 Engine Control Wiring - Deutz D2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
3.19 Engine Control Wiring - Kubota WG3800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
3.20 Deutz EDC-F Harness ..............................................................74
3.21 Load Cell Wiring ..................................................................75
3.22 Hydraulic Schematic ...............................................................77
3.23 Electrical Schematic - ANSI/CSA .....................................................78
3.24 Electrical Schematic - CE with Deutz TCD2.2 Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
3.25 Electrical Schematic - CE with Deutz TD2.9L, Deutz D2011 or Kubota Engines . . . . . . . . . . . . . . . .80
3.26 Electrical Schematic - AS ...........................................................81
3.27 Platform Controls Wiring - Deutz TD2.9L, Deutz D2011, Kubota, Perkins . . . . . . . . . . . . . . . . . . . . .82
3.28 Platform Controls - Harness View - Deutz TD2.9L, Deutz D2011, Kubota, Perkins . . . . . . . . . . . . . .83
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SJ85 AJ 229044ADA
3.29 Platform Controls - Schematic View - Deutz TD2.9L, Deutz D2011, Kubota, Perkins . . . . . . . . . . . .84
3.30 Platform Controls Wiring - Deutz TCD2.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
3.31 Platform Controls - Harness View - Deutz TCD2.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
3.32 Platform Controls - Schematic View - Deutz TCD2.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
3.33 Base Controls Wiring - ANSI/CSA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
3.34 Base Controls Wiring - ANSI/CSA with Positive Air Shut-off Option . . . . . . . . . . . . . . . . . . . . . . . . . 89
3.35 Base Controls Wiring - CE & AS with Deutz TD2.9L or D2011 Engine . . . . . . . . . . . . . . . . . . . . . . . .90
3.36 Base Controls Wiring - CE & AS with Deutz TCD2.2 Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
3.37 Engine Schematic - Deutz TD2.9L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
3.38 Engine Schematic - Deutz D2011 .....................................................93
3.39 Engine Schematic - Deutz TCD2.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
3.40 Engine Schematic - Kubota WG3800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
3.41 Engine Harness - Deutz TD2.9L ......................................................96
3.42 Engine Harness - Deutz TCD2.2 ......................................................97
3.43 Engine Harness - Kubota WG3800 ....................................................98
Section 4 – Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
4.1 Introduction ......................................................................99
4.2 Electrical System .................................................................100
4.2-1 All Controls Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
4.2-2 No Power ...................................................................103
4.2-3 Engine will not Crank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
4.2-4 No Boom Up or Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
4.2-5 No Riser Up or Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
4.2-6 No Turret Rotate ..............................................................110
4.2-7 No Telescope ................................................................112
4.2-8 No Platform Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
4.2-9 No Jib Up or Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
4.2-10 No Platform Rotate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
4.2-11 No Platform Rotate or Jib Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
4.2-12 No Drive or Steer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
4.2-13 Direction Sensing Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
4.2-14 Green LED on Load Sense/Dual Load Zone Module is not On . . . . . . . . . . . . . . . . . . . . . . . . . . 125
4.2-15 Load Sense Indicates Overload or Overload Warning with Platform Empty or Below Weight . . . 125
4.2-16 Load Sense/Dual Load Zone Module Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
4.2-17 No Light/Alarm when Platform is Overloaded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
4.3 Hydraulic System .................................................................128
4.3-1 All Controls Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
4.3-2 All Boom Functions Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
4.3-3 No Main Boom Up or Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
4.3-4 No Turret Rotate ..............................................................130
4.3-5 No Boom Extend or Retract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
4.3-6 No Riser Up or Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
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SJ85 AJ229044ADA
4.3-7 No Platform Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
4.3-8 No Jib Up or Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
4.3-9 No Platform Rotate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
4.3-10 No Steer ....................................................................136
4.3-11 No Drive ....................................................................137
4.3-12 No Brake Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
4.3-13 No Oscillating Axle Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Section 5 – Procedures ...................................................141
5.1 General .........................................................................141
5.1-1 Safety and Workmanship . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
5.2 Platform ........................................................................142
5.2-1 Human Machine Interface (HMI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
5.1-2 User Interface Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
5.1-3 SCM Character Functions Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
5.1-4 SCM Operating Values Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
5.1-5 How to Unlock and Modify SCM Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
5.1-6 Check I/O Error ...............................................................149
5.1-7 Fly Boom Switch Voltage References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
5.1-8 Platform Controller Voltage References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
5.1-9 Remove and Replace the Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
5.3 Load Sensing System .............................................................155
5.3-1 Load Sensing System Overload Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
5.3-2 Dual Capacity Overload Module Function Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
5.3-3 Calibration of Load Sensing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
5.4 Boom ..........................................................................159
5.4-1 Check the Wear Pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
5.4-2 Shim the Wear Pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
5.4-3 Rotary Actuator Bolt Torque Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
5.4-4 Remove and Replace the Jib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
5.4-5 Limit Switch Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
5.5 Turret ..........................................................................162
5.5-1 Check and Replace the High Pressure Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
5.5-2 Adjust the Turret Rotation Gear Backlash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
5.5-3 Check the Swing Drive Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
5.5-4 Change the Swing Drive Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
5.5-5 Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
5.5-6 Turret Rotation Gear Bolt Torque Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
5.5-7 Electronic Tilt Switch Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
5.5-8 Check the Rotation Bearing for Axial Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
5.5-9 Resetting the Emergency Lowering Counter (CE only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
5.6 Deutz Diesel Engines .............................................................169
5.6-1 Replace Engine Oil and Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
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SJ85 AJ 229044ADA
5.6-2 Replace the Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
5.6-3 Replace the Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
5.6-4 Check the Engine Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
5.6-5 Check the Oil Cooler (Deutz D2011 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
5.6-6 Deutz TD2.9L Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
5.6-7 Diesel Particulate Filter (DPF) and Standstill Regeneration - Deutz TCD2.2 Engine . . . . . . . . . . 191
5.7 Hydraulic Tank ...................................................................193
5.7-1 Change the Hydraulic Tank Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
5.7-2 Change the Hydraulic Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
5.8 Manifolds and Hydraulic Pumps .....................................................194
5.8-1 Hydraulic Brake Pressure Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
5.8-2 Hydraulic Standby Pressure Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
5.8-3 Hydraulic High Pressure Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
5.8-4 Hydraulic System Relief Valve Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
5.8-5 Turret Rotate Relief Valve Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
5.8-6 Platform Level Relief Valve Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
5.8-7 Riser Relief Valve Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
5.8-8 Main Boom Relief Valve Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
5.8-9 Fly Boom Relief Valve Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
5.8-10 Test Charge Pump Pressure on Drive Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
5.8-11 Test Forward Drive Pressure on Drive Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
5.8-12 Test Reverse Drive Pressure on Drive Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
5.9 Axles ...........................................................................202
5.9-1 Change the Oil in the Axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
5.9-2 Check the Oil Level in the Torque Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
5.9-3 Change the Oil in the Torque Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
5.9-4 Check the Oil Level in the Axle Gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
5.9-5 Change the Oil in the Axle Gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
5.9-6 Brake Inspection ..............................................................204
5.9-7 Oscillating Cylinder Bolt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
5.9-8 Oscillating Cylinder Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
5.9-9 Bleed the Oscillating Axle Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
5.9-10 Test the Oscillating Axle Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
5.10 Grease Points ...................................................................208
5.10-1 Grease the Turret Ring Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
5.10-2 Grease the Turret Swing Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
5.10-3 Grease the Axles ..............................................................209
5.10-4 Grease the Drive Shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
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Section 1 – Scheduled Maintenance
1.1 Read and Heed
Skyjack is continuously improving and expanding
product features on its equipment, therefore,
specifications and dimensions are subject to change
without notice.
1.1-1 Mobile Elevating Work Platform
(MEWP) Definition
A MEWP is a mobile device that has a positionable
platform supported from ground level by a structure.
1.1-2 Purpose of Equipment
The Skyjack Articulating Boom Series MEWPs are
designed to transport and raise personnel, tools and
materials to overhead work areas.
1.1-3 Use of Equipment
The MEWP is a highly maneuverable, mobile work
station. Work platform elevation and elevated driving
must only be done on a firm surface.
1.1-4 Manual
Operating Manual: The operating manual is
considered a fundamental part of the MEWP. It is a
very important way to communicate necessary safety
information to users and operators. A complete
and legible copy of this manual must be kept in the
provided weather-resistant storage compartment on
the MEWP at all times.
Service & Maintenance: The purpose of this is
to provide the customer with the servicing and
maintenance procedures essential for the promotion
of proper machine operation for its intended purpose.
All information in this manual should be read and
understood before any attempt is made to service the
machine. The updated copy of the manuals are found
on the company’s website: www.skyjack.com.
1.1-5 Service Policy and Warranty
Skyjack warrants each new product to be free of
defective parts and workmanship for the first 2 years
or 3000 hours, whichever occurs first. Any defective
part will be replaced or repaired by your local Skyjack
dealer at no charge for parts or labor. In addition,
all products have a 5 year structural warranty.
Contact the Skyjack Service Department for warranty
statement extensions or exclusions.
1.1-6 Operator Safety Reminders,
Warnings and Precautions
Operator safety is Skyjack’s priority. The operator
should comply with all applicable safety-related
reminders, warnings and precautions found in
the Operating Manual. They should be read and
understood completely before operating the MEWP.
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