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SkyJack SJ12 SJ16 Service Manual
SJ 12 14,001,106 & Above
SJ 16 14,001,077 & Above
Content:
SECTION 1 - SCHEDULED MAINTENANCE
Operators Responsibility for Maintenance
Aerial Platform and Mobile Elevating Work Platform (MEWP) Definition
Purpose of Equipment
Use of Equipment
Manuals
Operator
Service Policy and Warranty
Optional Accessories
Scope of this Manual
Operator Safety Reminders
Electrocution Hazard
Maintenance and Inspection Schedule
Owners Annual Inspection Record
Replacement Parts
Maintenance and Service Safety Tips
Hydraulic System & Component Maintenance and Repair
Maintenance Hints
Service and Maintenance
About this Section
Service Bulletins
Maintenance and Inspection
Maintenance Instructions
Tables
Table 1.1 Owners Annual Inspection Record
Table 1.2 Maintenance and Inspection Checklist
Scheduled Maintenance Inspections
1.1 Scheduled Maintenance Inspections
1.2 Function Tests
SECTION 2 - MAINTENANCE TABLES
Table 2.1 Standard Hose Numbering System
Table 2.2a Specifications and Features - ANSI/CSA
Table 2.2b Specifications and Features - KC
Table 2.2c Specifications and Features - CE
Table 2.2d Specifications and Features - AS
Table 2.3a Maximum Platform Capacities (Evenly Distributed) - ANSI/CSA
Table 2.3b Maximum Platform Capacities (Evenly Distributed) - KC
Table 2.3c Maximum Platform Capacities (Evenly Distributed) - CE
Table 2.3d Maximum Platform Capacities (Evenly Distributed) - AS
Table 2.4a Floor Loading Pressure - ANSI/CSA & KC
Table 2.4b Floor Loading Pressure - KC
Table 2.4c Floor Loading Pressure - CE
Table 2.4d Floor Loading Pressure - AS
Table 2.5 Torque Specifications
SECTION 3 - SYSTEM COMPONENT IDENTIFICATION AND SCHEMATICS
Charts
3.1 Hydraulic Symbol Chart
3.2 Electrical Symbol Chart
3.3 Wire Number and Color Code
Parts List
3.4 Hydraulic Component Parts List
3.5 Electrical Component Parts List
Diagrams and Schematics
3.6 Cylinders and Port Identifications
3.7 Wheel Brake and Port Identifications
3.8 Powerpack and Port Identifications
3.9 Platform Control Console Wire Diagram
3.10 Brake and Main Manifold and Hydraulic Identifications
3.11 Disc Brake Kits and Torque Specifications
3.12 Hydraulic Schematic - SJ12/SJ16
3.13 Main Electrical Harness - SJ12/SJ16
3.14 Mast Control Cable
3.15 Limit Switches
3.16a Base Control Wiring Diagram (SJ12/SJ16 - ANSI)
3.16b Base Control Wiring Diagram (SJ12/SJ16 - CE/KC)
3.16c Base Control Wiring Diagram (SJ12/SJ16 - AS)
3.17a Electrical Schematic (SJ12/SJ16 - ANSI/CSA)
3.17b Electrical Schematic (SJ12/SJ16 - CE/KC)
3.17c Electrical Schematic (SJ12/SJ16 - AS)
SECTION 4 - TROUBLESHOOTING INFORMATION
Introduction
Electrical System
4.1-1 All Controls Inoperative
4.1-2 All Controls Except for Down Function Inoperative
4.1-3 All Controls Inoperative From Base Control Console (ANSI/CSA, CE, KC)
4.1-4 All Controls Inoperative From Base Control Console (AS)
4.1-5 No Up Function from Base Control Console
4.1-6 Up Function Slow from Base Control Console
4.1-7 No Down Function from Base Control Console
4.1-8 All Controls Inoperative From Platform Control Console
4.1-9 No Up Function from Platform Control Console
4.1-10 Up Function Slow from Platform Control Console
4.1-11 No Down Function from Platform Control Console
4.1-12 Pothole Bars Will Not Retract
4.1-13 Steer Only Inoperative
4.1-14 Right Steer Inoperative
4.1-15 Left Steer Inoperative
4.1-16 No Drive Forward or Reverse
4.1-17 Brake will not Release
4.1-18 No Elevated Drive
4.1-19 Work Platform Drives in Slow Speed Only
4.1-20 Forward Drive Function Inoperative
4.1-21 Reverse Drive Function Inoperative
4.1-22 Two or More Functions at One Time
Hydraulic System
4.2-1 All Functions Inoperative
4.2-2 All Functions Sluggish
4.2-3 Platform Drifts Down
4.2-4 Platform Lifts Slowly
4.2-5 Platform Does Not Lift
4.2-6 Platform Will Not Lower
4.2-7 Pothole Bars Will Not Retract
4.2-8 Platform Drives Slow
4.2-9 Platform Will Not Drive in Forward
4.2-10 Platform Will Not Drive in Reverse
4.2-11 Brake(s) Will Not Release
4.2-12 Platform Does Not Steer
4.2-13 Platform Steers Very Slowly
SECTION 5 - PROCEDURES
General
Safety and Workmanship
Electrical System
5.1-1 Resistor - Voltage Divider
5.1-2 Troubleshooting - Diagnostic Switch
5.1-3 Tilt Switch Orientation
Hydraulic System
5.2-1 System Relief Pressure Adjustment
5.2-2 Lift Pressure Adjustment
5.2-3 Steer Relief Pressure Adjustment
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