Skyjack SJ46AJ, SJ51AJ Articulating Boom Lift Service Manual
193 pages · Publication 143921AK
Fast free USA shippingShips in 1 business daySave 10% on 2 manuals, 15% on 3 or morePay by credit or debit card or with PayPal. No PayPal account needed.
Added to your cart. View cart
What's inside
From the manual's own table of contents: 5 sections, 243 entries. See sample pages (PDF, 694 KB)
Section 1 - Scheduled Maintenance29 topics
- Operator’s Responsibility for Maintenance
- Aerial Platform Definition
- Purpose of Equipment
- Use of Equipment
- Manuals
- Operator
- Service Policy and Warranty
- Optional Accessories
- Scope of this Manual
- Operator Safety Reminders
- Electrocution Hazard
- Safety Precautions
- Maintenance and Inspection Schedule
- Owner’s Annual Inspection Record
- Replacement Parts
- Maintenance and Service Safety Tips
- Hydraulic System & Component Maintenance and Repair
- Maintenance Hints
- Railing Maintenance and Repair
- Service and Maintenance
- About this Section
- Service Bulletins
- Maintenance and Inspection
- Maintenance Instructions
- Table 1.1 Owner’s Annual Inspection Record
- Table 1.2 Maintenance and Inspection Checklist
- Scheduled Maintenance Inspections and Function Tests
- Scheduled Maintenance Inspections
- Function Tests
Section 2 - Maintenance Tables and Diagrams14 topics
- Table 2.1 Standard Hose Numbering System
- Table 2.2 Aerial Platform Torque Specifications
- Table 2.3 Axles Torque Specifications
- Table 2.4 Axles Maintenance Intervals
- Table 2.5 Tire Specifications
- Table 2.6 Maximum Platform Capacities
- Table 2.7 Floor Loading Pressure
- Table 2.8 Hydraulic Specifications
- Table 2.9 Specifications and Features
- Diagrams
- Diagram 2.1 Dimension and Reach Diagram - SJ 46A
- Diagram 2.2 Dimension and Reach Diagram - SJ 46AJ
- Diagram 2.3 Dimension and Reach Diagram - SJ 51AJ
- Diagram 2.4 Axle Oscillation Diagram
Section 3 - System Component Identification and Schematics39 topics
- Charts
- Hydraulic Symbol Chart
- Electrical Symbol Chart
- Wire Number and Color Code
- Parts Lists
- Hydraulic Schematic Parts List
- Electrical Component Parts List
- Diagrams and Schematics
- Rotary Manifold and Port Identifications
- Drive and System Pump and Port Identifications
- Drive Motors and Port Identifications
- Jib Valves and Port Identifications
- 3.11a Main Manifold and Port Identifications
- 3.11b Main Manifold and Electrical Identifications
- 3.11c Main Manifold and Hydraulic Identifications
- Main Electrical Harness and Fuel Level Switch Harness
- ECU Engine Wiring Diagram (Deutz Diesel Engine)
- Engine Interface Harness (GM Dual Fuel Engine)
- Harnesses
- Platform Control Cable Harnesses
- Limit Switch Connections at Base Control Console
- Load Sensing Cable Connection (CE & AS)
- Hydraulic Schematic Diagram
- Platform Control Console Diagram (CE, SJ 46AJ/51AJ - Deutz Diesel Engine)
- Platform Control Console Diagram (AS, SJ46AJ/51AJ - Deutz Diesel Engine)
- Platform Control Console Diagram (ANSI/CSA, SJ46AJ - GM Dual Fuel Engine)
- Base Control Console Diagram (ANSI/CSA, SJ46AJ - Deutz Diesel Engine)
- Base Control Console Diagram (AS, SJ46AJ/51AJ - Deutz Diesel Engine)
- 3.28a Base Control Console Diagram (ANSI/CSA, SJ46AJ - GM Dual Fuel Engine)
- 3.28b Base Control Console Diagram (ANSI/CSA, SJ46AJ - GM Dual Fuel Engine)
- Electrical Schematic Diagram (ANSI/CSA, SJ46AJ - Deutz Diesel Engine)
- Electrical Schematic Diagram (CE, SJ46AJ/51AJ - Deutz Diesel Engine)
- Electrical Schematic Diagram (AS, SJ46AJ/51AJ - Deutz Diesel Engine)
- 3.32a Electrical Schematic Diagram (ANSI/CSA, SJ 46AJ - GM Dual Fuel Engine)
- 3.32b Electrical Schematic Diagram (ANSI/CSA, SJ46AJ - GM Dual Fuel Engine)
- Interface & Engine Electrical Schematic - GM Dual Fuel Engine
- Engine Harnesses - GM Dual Fuel Engine
- All Motion Alarm Connections (CE & AS)
- Flashing Amber Light Option
Section 4 - Troubleshooting Information92 topics
- Introduction
- Electrical System
- 4.1-1 All Controls Inoperative
- 4.1-2 No Power To Platform
- 4.1-3 No Power to Base
- 4.1-4 Engine Will Not Crank from Base
- 4.1-5 Engine Will Not Crank from Platform
- 4.1-6 Engine Will Not Crank from Platform or Base (Deutz Diesel)
- 4.1-7 Engine Cranks but Will Not Start (Deutz Diesel)
- 4.1-8 Engine Will Not Crank from Platform or Base Control (GM Dual Fuel)
- 4.1-9 Engine Cranks but Will Not Start (GM Dual Fuel)
- 4.1-10 Glow Plug Circuit Inoperative
- 4.1-11 All Controls Inoperative from Base Console
- 4.1-12 No Main Boom Down, Riser Down or Turret Rotate from Base Control Console
- 4.1-13 No Boom Up from Base Control Console
- 4.1-14 No Boom Down from Base Control Console
- 4.1-15 No Riser Up from Base Control Console
- 4.1-16 No Riser Down from Base Control Console
- 4.1-17 No Turret Rotate Left from Base Control Console
- 4.1-18 No Turret Rotate Right from Base Control Console
- 4.1-19 No Telescope Retract from Base Control Console
- 4.1-20 No Telescope Extend from Base Control Console
- 4.1-21 No Platform Rotate Left from Base Control Console
- 4.1-22 No Platform Rotate Right from Base Control Console
- 4.1-23 No Jib Up from Base Control Console
- 4.1-24 No Jib Down from Base Control Console
- 4.1-25 No Manual Platform Level Up from Base Control Console
- 4.1-26 No Manual Platform Level Down from Base Control Console
- 4.1-27 All Controls Inoperative from Platform Control Console
- 4.1-28 No Boom Up from Platform Control Console
- 4.1-29 No Boom Down from Platform Control Console
- 4.1-30 No Riser Up from Platform Control Console
- 4.1-31 No Riser Down from Platform Control Console
- 4.1-32 No Turret Left from Platform Control Console
- 4.1-33 No Turret Right from Platform Control Console
- 4.1-34 No Toggle Switch Functions from Platform Control Console
- 4.1-35 No Telescope In from Platform Control Console
- 4.1-36 No Telescope Out from Platform Control Console
- 4.1-37 No Platform Rotate Left from Platform Control Console
- 4.1-38 No Platform Rotate Right from Platform Control Console
- 4.1-39 No Jib Up from Platform Control Console
- 4.1-40 No Jib Down from Platform Control Console
- 4.1-41 No Manual Platform Level Up from Platform Control Console
- 4.1-42 No Manual Platform Level Down from Platform Control Console
- 4.1-43 Mid Throttle Inoperative
- 4.1-44 High Throttle Inoperative
- 4.1-45 Brake will not Release
- 4.1-46 Differential Lock will not Engage
- 4.1-47 Differential Lock Engages Momentarily but will not stay Engaged
- 4.1-48 No Drive and Steer
- 4.1-49 No Forward Drive
- 4.1-50 No Reverse Drive
- 4.1-51 No High Speed Drive
- 4.1-52 No Elevated Drive
- 4.1-53 No Left Steer
- 4.1-54 No Right Steer
- 4.1-55 Direction Sensing Inoperative
- Hydraulic System
- 4.2-1 All Controls Inoperative
- 4.2-2 All Boom Functions Inoperative
- 4.2-3 No Main Boom Up
- 4.2-4 No Main Boom Down
- 4.2-5 No Riser Boom Up
- 4.2-6 No Riser Boom Down
- 4.2-7 Riser Boom Down Jerky
- 4.2-8 No Turret Rotate Left
- 4.2-9 No Turret Rotate Right
- 4.2-10 No Boom Extend
- 4.2-11 No Boom Retract
- 4.2-14 No Platform Rotation Right
- 4.2-15 No Platform Rotation Left
- 4.2-16 Platform will not Level Down Manually
- 4.2-17 Platform will not Level Up Manually
- 4.2-18 Brake will not Release
- 4.2-19 Brake will not Engage
- 4.2-20 Differential Lock will not Engage
- 4.2-21 No Drive Forward or Reverse
- 4.2-22 No Forward Drive
- 4.2-23 No Reverse Drive
- 4.2-24 No High Speed Drive
- 4.2-25 No Right Steer
- 4.2-26 No Left Steer
- 4.2-27 Axle Will Not Oscillate
- 4.2-28 Axle Will Not Lock
- Load Sensing System - CE
- 4.3-1 Green Power LED is not Flashing
- 4.3-2 Load Cell red Alarm LED is ON (with platform empty)
- 4.3-3 Red Error LED is ON
- 4.3-4 Load Cell red Alarm LED is OFF (with platform overloaded)
- 4.3-5 Platform Indicator Light does not turn ON
- 4.3-6 Audible Alarm does not turn ON
- 4.3-7 Boom and Drive Functions are Enabled (with boom extended)
Section 5 - Procedures64 topics
- General
- Safety and Workmanship
- Platform
- 5.1-1 Human Machine Interface (HMI)
- 5.1-2 User Interface Keys
- 5.1-3 How to Select Functionality
- 5.1-4 How to View OCM Operation
- 5.1-5 How to Unlock and Modify OCM Settings
- 5.1-6 OCM Pin Voltage Reference
- 5.1-7 Platform Controller Voltage References
- Boom
- 5.2-1 Check Wear Pads
- 5.2-2 Shimming Wear Pads
- 5.2-3 Cable Carrier Repair
- 5.2-4 Master Cylinder Replacement
- Turret
- 5.3-1 High Pressure Filter Replacement
- 5.3-2 Check Swing Drive Motor Gearbox Oil
- 5.3-3 Turret Rotation Gear Backlash Adjustment
- 5.3-4 Swing Drive Motor Removal
- 5.3-5 Swing Drive Motor Replacement
- 5.3-6 Swing Drive Brake and Gearbox Oil Replacement
- 5.3-7 Battery Replacement
- 5.3-8 Bolt Torque Procedure
- 5.3-9 Electronic Tilt Switch Setup Procedure
- 5.3-10 Check Rotation Bearing for Axial Wear
- Deutz Diesel Engine
- 5.4-1 Engine Oil and Filter Replacement
- 5.4-2 Fuel Filter Replacement
- 5.4-3 Air Filter Replacement
- 5.4-4 Check Engine Belt
- 5.4-5 Check Oil Cooler
- GM Dual Fuel Engine
- 5.5-1 GM Map and IAT Sensor (3.0L GM Engine)
- 5.5-2 LPG Temperature Sensor (3.0L GM Engine)
- 5.5-3 Throttle Actuator (3.0L GM Engine)
- 5.5-4 Engine Coolant Temperature Sensor (3.0L GM Engine)
- 5.5-5 ECU Pin Reference Chart (3.0L GM Engine)
- 5.5-6 Fuse Block Layout (3.0L GM Engine)
- Hydraulic Tank
- 5.6-1 Hydraulic Oil Replacement
- 5.6-2 Hydraulic In-tank Filter Replacement
- Manifold and Hydraulic Pumps
- 5.7-1 Hydraulic Brake Pressure Adjustment
- 5.7-2 Hydraulic System Relief Valve Adjustment
- 5.7-3 Riser Down Relief Valve Adjustment
- 5.7-4 Turret Rotate Relief Valve Adjustment
- 5.7-5 Platform Level Relief Valve Adjustment
- 5.7-6 Test Charge Pump Pressure on Drive Pump
- 5.7-7 Test Forward Drive Pressure on Drive Pump
- 5.7-8 Test Reverse Drive Pressure on Drive Pump
- Axles
- 5.8-1 Rear Axle Oil Replacement
- 5.8-2 Front Axle Oil Replacement (4WD)
- 5.8-3 Check Torque Hub Oil Level
- 5.8-4 Check Axle Gearbox Oil Level
- 5.8-5 Axle Gearbox Oil Replacement
- 5.8-6 Bleeding Oscillating Axle Cylinders
- 5.8-7 Pin Brake Adjustments
- 5.8-8 Brake Inspection
- Grease Points
- 5.9-1 Lubrication
- Options
- 5.10-1 Load Sensing System - CE
Inside this manual
Real pages from this service manual (193 pages). Open the sample pages (PDF, 693 KB)
- Specifications, page 52: Section 2 - Maintenance Tables and Diagrams
- Diagram, page 64: Section 3 - System Component Identification and Schematics
- Troubleshooting, page 104: Section 4 - Troubleshooting Information
- Color page, page 102: Articulating Boom Series
- Color page, page 58: Articulating Boom Series
- Foldout diagram (color), page 91: SKYJACK, Page 90
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
This manual: Service Manual 143921AK$69.87
Added to your cart. View cart
This is a service manual
Here's how it compares to the other manual types.
This manual
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 193 pages
Quantity one is the manual described above.
Fast free USA shipping
Ships in 1 business day.
60-day returns
Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy
Other editions and similar models
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).