Skyjack SJ12 Vertical Mast Lift Service Manual

Name: Skyjack SJ12 Vertical Mast Lift Service Manual
Brand: MidWestTech
SKU: 155185AI
Price: 69.79 USD
Availability: InStock

114 pages · Publication 155185AI

$69.79

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Models: SJ12
Serial coverage: SJ12: 14001001 - 14001105
Manual type: Service Manual
Pages: 114
Publication: 155185AI
Condition: Brand new

Skyjack SJ12 Vertical Mast Lift Service Manual, publication 155185AI

What's inside

From the manual's own table of contents: 5 sections, 138 entries. See sample pages (PDF, 459 KB)

Search the contents

Section 1 - Scheduled Maintenance28 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
- Function Tests

Section 2 - Maintenance Tables6 topics

Table 2.1 Standard Hose Numbering System
Table 2.2 Specifications and Features
Table 2.3 Maximum Platform Capacities
Table 2.4a Floor Loading Pressure - CE
Table 2.4b Floor Loading Pressure - ANSI/CSA
Table 2.5 Torque Specifications

Section 3 - System component identification and schematics25 topics

Charts
- Hydraulic Symbol Chart
- Electrical Symbol Chart
- Wire Number and Color Code
Parts List
- Hydraulic Component Parts List
- Electrical Component Parts List
Diagrams and Schematics
- Cylinders and Port Identifications
- Wheel Brake and Port Identifications
- Powerpack and Port Identifications
- Platform Control Console Wire Diagram
- 3.10a Brake and Main Manifold and Hydraulic Identifications
- 3.10b Brake and Main Manifold and Hydraulic Identifications
- Disc Brake Kits and Torque Specifications
- 3.12a Hydraulic Schematic
- 3.12b Hydraulic Schematic
- 3.13a Main Electrical Harness
- 3.13b Main Electrical Harness
- Steer Speed Valve Port Identification and Harness
- Mast Control Cable
- Limit Switches
- Base Control Centre Wiring Diagram
- Electrical Schematic
- Introduction

Section 4 - Troubleshooting Information37 topics

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
- 4.1-4 No Up Function from Base Control Console
- 4.1-5 Up Function Slow from Base Control Console
- 4.1-6 No Down Function from Base Control Console
- 4.1-7 All Controls Inoperative From Platform Control Console
- 4.1-8 No Up Function from Platform Control Console
- 4.1-9 Up Function Slow from Platform Control Console
- 4.1-10 No Down Function from Platform Control Console
- 4.1-11 Steer Only Inoperative
- 4.1-12 Right Steer Inoperative
- 4.1-13 Left Steer Inoperative
- 4.1-14 No Drive Forward or Reverse
- 4.1-15 Brake will not Release
- 4.1-16 No Elevated Drive
- 4.1-17 Work Platform Drives in Slow Speed Only
- 4.1-18 Forward Drive Function Inoperative
- 4.1-19 Reverse Drive Function Inoperative
- 4.1-20 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 Platform Drives Slow
- 4.2-8 Platform will not Drive in Forward
- 4.2-9 Platform will not Drive in Reverse
- 4.2-10 Brake(s) will not Release
- 4.2-11 Platform does not Steer
- 4.2-12 Platform does not Steer Elevated While Driving
- 4.2-13 Platform Steers Very Slowly
- General
- Safety and Workmanship

Section 5 - Procedures37 topics

Electrical System Adjustment
- 5.1-1 Resistor - Voltage Divider
- 5.1-2 Troubleshooting - Diagnostic Switch
- 5.1-3 Tilt Switch Orientation
- 5.1-4 Mast Limit Switch Replacement
- 5.1-5 Testing Limit Switch
- Pressure Adjustment
- 5.2-1 System Relief Pressure Adjustment
- 5.2-2 Lift Pressure Adjustment
Service Procedures
- Electronic Tilt Switch Setup Procedure
- 5.3-1.0 Tilt Switch Replacement
- 5.3-1.1 Reprogramming Existing Tilt Switch
- 5.3-1.2 Test and Verify Tilt Circuit
- Mast Lubrication Procedure
- 5.4-1 Outside Mast Lubrication
- 5.4-2 Inner Mast Lubrication
- Mast Chain Inspection
- Mast Roller Inspection/Maintenance
- 5.6-1 Roller and Roller Mount Inspection
- 5.6-2 Roller Operation Inspection
- Mast Assembly Procedure
- 5.7-1.0 Preparation
- 5.7-2.0 Platform/Mast removal
- 5.7-2.1 Platform/Mast 4 Removal
- 5.7-2.2 Mast 3 Assembly Removal
- 5.7-2.3 Mast 2 Assembly Removal
- 5.7-2.4 Mast 1 Assembly Removal
- 5.7-3.0 Mast Installation
- 5.7-3.1 Mast 1 Installation
- 5.7-3.2 Mast 2 Installation
- 5.7-3.3 Mast 3 Installation
- 5.7-3.4 Platform/Mast 4 Assembly Installation
- 5.7-4.0 Function Test
- 5.7-5.0 Chains Installation
- 5.7-5.2 Outer chain Mount Installation
- 5.7-5.3 Double Chain Mount Installation

Inside this manual

Real pages from this service manual (114 pages). Open the sample pages (PDF, 458 KB)

Sample pages from the Skyjack SJ12 Vertical Mast Lift Service Manual: Specifications, Diagram, Troubleshooting, Color page, Color page, Foldout diagram (color)

Specifications, page 37: Section 2 - Maintenance Tables and Diagrams
Diagram, page 54: 3.9 Platform Control Console Wire Diagram
Troubleshooting, page 70: Section 4 - Troubleshooting Information
Color page, page 97: Vertical Mast Series
Color page, page 84: Vertical Mast Series
Foldout diagram (color), page 59: Vertical Mast Series

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, 114 pages

Quantity one is the manual described above.

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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).