Page 1 SERVICE MANUAL TELESCOPIC BOOMS MODELS SJ40T SJ45T 143872AL June 25 2025...
Page 2 This manual is for MEWPs with serial numbers: SJ40T & SJ45T 98 000 522 to 98 001 141 Please refer to the website (www.skyjack.com) for contact information, other serial numbers, the most recent technical manuals, animations, and USB software.
Page 3 SERVICE AND MAINTENANCE Table of Contents Section 1 - Scheduled Maintenance Table of Contents Section 2 - Maintenance Tables and Diagrams Table of Contents Section 3 - System Component Identification and Schematics Table of Contents Section 4 - Troubleshooting Table of Contents Section 5 - Procedures Table of Contents Telescopic Boom Series...
Page 4 The Safety Alert Symbol identifies important safety messages on aerial platforms, safety This Safety Alert Symbol means attention! signs in manuals or elsewhere. When you see this symbol, be alert to the possibility of Become alert! Your safety is involved. personal injury or death.
Page 5: Table Of Contents
Section 1 SCHEDULED MAINTENANCE Table of Contents Operator’s Responsibility for Maintenance Aerial Platfrm Definition ..............................7 Purpose of Equipment ..............................7 Use of Equipment ................................7 Manuals ..................................7 Operator ..................................7 Service Policy and Warranty ............................7 Optional Accessories ..............................7 Scope of this Manual ..............................8 Operator Safety Reminders ............................8 Electrocution Hazard ..............................9 Safety Precautions ..............................10...
Page 6 Notes Telescopic Boom Series Models SJ 40T, SJ 45T Page 6 December 2007 143872...
Page 7: Section 1 - Scheduled Maintenance
SKYJACK warrants each new SJT series work platform to be free of defective parts and workmanship for the first 24 months. Any defective part will be replaced or repaired by your local SKYJACK dealer at no charge for parts or labor.
Page 8: Scope Of This Manual
Common sense dictates the use of protective clothing when working on or near machinery. Use appropriate safety devices to protect your eyes, ears, hands, feet and body. Any modifications from the original design are strictly forbidden without written permission from SKYJACK. Telescopic Boom Series...
Page 9: Electrocution Hazard
Section 1 - Scheduled Maintenance Operator’s Responsibility for Maintenance Electrocution Hazard This aerial platform is not electrically insulated. Maintain a Minimum Safe Approach Distance (MSAD) from energized power lines and parts as listed below. The operator must allow for the platform to sway, rock or sag. This aerial platform does not provide protection from contact with or proximity to an electrically charged conductor.
Page 10: Safety Precautions
Operator’s Responsibility for Maintenance Section 1 - Scheduled Maintenance Safety Precautions Know and understand the safety precautions before going on to next section. WARNING • DO NOT increase the lateral Failure to heed the following safety surface area of the platform. precautions could result in tip over, Increasing the area exposed falling, crushing, or other hazards leading...
Page 11 Section 1 - Scheduled Maintenance Operator’s Responsibility for Maintenance Safety Precautions (Continued) Know and understand the safety precautions before going on to next section. • DO NOT operate an aerial plat- • BE AWARE of blind spots form that has ladders, scaffold- when operating the aerial plat- ing or other devices mounted form.
Page 12 • DO NOT place materials on the guardrails or ma- terials that exceed the confines of the guardrails unless approved by Skyjack. • DO NOT operate if aerial plat- • DO NOT...
Page 13: Fall Protection
• has been damaged or appears to have worn or missing parts. Skyjack recommends the use of a fall restraint system • has alterations or modifications not approved to keep an occupant within the confines of the platform, by the manufacturer.
Page 14: Maintenance And Inspection Schedule
Properly dispose of all waste material such as lubricants, stability of aerial platform. rags, and old parts according to the relative law provisions obtaining in the country. Consult SKYJACK’s Service Department for optional tires specifications and installation. Before attempting any repair work, turn Battery Disconnect Switch to “...
Page 15: Hydraulic System & Component Maintenance And Repair
Section 1 - Scheduled Maintenance Scheduled Maintenance Inspections Hydraulic System & Component All hydraulic components must be disassembled in spotlessly clean surroundings. During Maintenance and Repair disassembly, pay particular attention to the The following points should be kept in mind when identification of parts to assure proper reassembly.
Page 16: Railing Maintenance And Repair
Scheduled Maintenance Inspections Section 1 - Scheduled Maintenance Railing Maintenance and Repair Skyjack MEWPs have been designed to ensure compliance with the relevant design standards applicable for that particular unit at the time of manufacture. As such, any repairs made to the...
Page 17: About This Section
Section 1 - Scheduled Maintenance Scheduled Maintenance Inspections About this Section Maintenance Instructions This section contains the maintenance and inspection This manual consists of four schedules to be done for schedule that is to be performed. maintaining on an aerial platform. Inspection schedule frequency is shown below: References are made to the procedures in Section 5 Inspection Schedule...
Page 18: Table 1.1 Owner's Annual Inspection Record
Scheduled Maintenance Inspections Section 1 - Scheduled Maintenance Table 1.1 Owner’s Annual Inspection Record Model Number: _________________ Serial Number:__________________ 20__ 20__ 20__ 20__ 20__ 20__ 20__ 20__ 20__ 1001AA This decal is located on the control compartment cowling. It must be completed after an annual inspection has been completed.
Page 19: Table 1.2 Maintenance And Inspection Checklist
* - Refer to Skyjack's website @ www.skyjack.com for latest service bulletins prior to performing quarterly or yearly inspection. Note: Make a copy of this page or visit the Skyjack web site:www.skyjack.com for a printable copy. Telescopic Boom Series Models SJ 40T, SJ 45T December 2007...
Page 20: Scheduled Maintenance Inspections
Scheduled Maintenance Inspections Section 1 - Scheduled Maintenance Platform Control Console Platform Railing Manuals Platform Assembly Footswitch 1.1 Scheduled Maintenance Inspections Perform a visual inspection around the following areas: Begin the scheduled maintenance inspections by • hydraulic tank filter, fittings, hoses, emergency checking each item in sequence for the conditions listed power unit and turret/base surface in this section.
Page 21 Section 1 - Scheduled Maintenance Scheduled Maintenance Inspections Typical SJ 40T/45T shown (for model 61T/66T, see note below) Muffler Air Filter Hydraulic High Pressure Pumps Filter Swing Drive Motor Battery Engine Main Power Disconnect Switch 1.1-3 Engine Compartment WARNING Ensure all compartment latches are secure and in Battery acid is extremely corrosive proper working order.
Page 22: Muffler And Exhaust
Scheduled Maintenance Inspections Section 1 - Scheduled Maintenance Typical SJ 40T/45T shown (for model 61T/66T, see note below) Muffler Air Filter Hydraulic High Pressure Pumps Filter Swing Drive Motor Battery Engine Main Power Disconnect Switch • Swing Drive Motor Ensure all fittings and hoses are properly Ensure there are no loose or missing tightened and there is no evidence of parts and there is no visible damage.
Page 23: Control Compartment
Section 1 - Scheduled Maintenance Scheduled Maintenance Inspections Typical SJ 40T/45T shown Hydraulic Return Hydraulic Tank Brake Manifold Main Manifold Base Control Emergency Power Fuel Tank Console Unit • Engine Air Filter • Engine Fuel Filter Ensure there are no loose or missing Ensure there are no loose or missing parts and there is no visible damage.
Page 24 Scheduled Maintenance Inspections Section 1 - Scheduled Maintenance Typical SJ 40T/45T shown Hydraulic Return Hydraulic Tank Brake Manifold Main Manifold Base Control Con- Emergency Power Fuel Tank sole Unit The hydraulic oil level should be between • Fuel Tank the minimum and maximum marks on the sight glass.
Page 25 Section 1 - Scheduled Maintenance Scheduled Maintenance Inspections Overhead View Tie Rod Oscillating Cylin- Turret Rotation Limit Switch der Assembly Gear Drive Axle Wheel/Tire Assembly Rotary Manifold Steer Cylinder Assembly 1.1-5 Base • Tie Rod Ensure there are no loose or missing •...
Page 26: Platform Assembly
Scheduled Maintenance Inspections Section 1 - Scheduled Maintenance Platform Control Console Platform Railing Manuals Platform Assembly Footswitch 1.1-6 Manuals 1.1-8 Platform Control Console Ensure a copy of operating manual, and other Ensure all switches/controllers are returned important documents are enclosed in manual to neutral and are properly secured.
Page 27 Section 1 - Scheduled Maintenance Scheduled Maintenance Inspections SJ 45T Wear Pad Boom Wear Pad Rotary Actuator Power Track Lift Cylinder 1.1-11 Boom • Hoses Ensure there are no loose or missing parts Ensure all hoses are properly tightened and there is no visible damage. and there is no evidence of hydraulic leakage.
Page 28 Scheduled Maintenance Inspections Section 1 - Scheduled Maintenance Battery Warmer/Hydraulic Flashing Amber Light Hydraulic Generator Oil Heater Work Light Welder Glazier Tray 1.1-12 Special Options • Work Light (If Equipped) Ensure lamps are properly secured with • Hydraulic Generator (If Equipped) no signs of visible damage.
Page 29 Notes Telescopic Boom Series Models SJ 40T, SJ 45T December 2007 Page 29 143872...
Page 30: Function Tests
Function Tests Section 1 - Scheduled Maintenance Base Control Console Start/Emergency Power Switch Emergency Stop Base/Off/Platform Key Switch 1.2 Function Tests 1.2-1 Test Main Power Disconnect Switch Function tests are designed to discover any malfunctions In engine compartment, turn main power before aerial platform is put into service.
Page 31 Section 1 - Scheduled Maintenance Function Tests Base Control Console Start/Emergency Power Switch Emergency Stop Base/Off/Platform Key Switch • Test Emergency Stop • Test Platform Self-leveling 1. Lower boom to stowed position. 1. Push in “ ” emergency stop button. Result: Engine should shut down and 2.
Page 32 Function Tests Section 1 - Scheduled Maintenance Base Control Con- sole Start/Emergency Power Switch Emergency Stop Base/Off/Platform Key Switch Tilt Sensor B NOTE 1. Open control cowling. To conserve battery power, test each function through a partial cycle. 2. Locate tilt sensor on top of control box.
Page 33 Section 1 - Scheduled Maintenance Function Tests Base Control Con- sole Start/Emergency Power Switch Emergency Stop Base/Off/Platform Key Switch 6. On platform control console, select “ ” NOTE start position from start/emergency power The emergency power unit has two- switch and until engine starts. minute duty cycle.
Page 34 Function Tests Section 1 - Scheduled Maintenance Platform Control Emergency Stop Drive/Steer Console Controller Tie-off Point Tie-off Point Footswitch 1.2-3 Platform Control Console 2. Pull out “ ” emergency stop button. Result: After four seconds of time elapses, WARNING the red light and audible alarm pulse two times.
Page 35 Section 1 - Scheduled Maintenance Function Tests Start/Emergency Power Switch Horn Drive/Steer Controller 6. W ith engine running and without 4. Start engine. depressing footswitch, test each boom and platform function. • Test Emergency Stop Result: Aerial platform functions should not operate.
Page 36 Function Tests Section 1 - Scheduled Maintenance Start/Emergency Power Switch Horn Drive/Steer Controller • Test Driving Function 4. Extend “ ” fly boom approximately 12 in. (30 cm) and then slowly move drive/ 1. Ensure path of intended motion is clear. steer controller to full drive position.
Page 37 Section 1 - Scheduled Maintenance Function Tests Start/Emergency Power Switch Horn Drive/Steer Controller 2. Ensure boom is in stowed position. 4. Select “ ” emergency power position from start/emergency power 3. Depress and hold footswitch and drive switch and activate each function control handle or switch.
Page 38 Function Tests Section 1 - Scheduled Maintenance Oscillating Axle Unlocked Oscillating Axle Locked • Test Oscillating Axles WARNING DO NOT operate any control on plat- form control console without proper fall protection secured to designated location in platform. Failure to avoid this hazard could result in death or serious injury! 1.
Page 39: Table Of Contents
Section 2 MAINTENANCE TABLES AND DIAGRAMS Table of Contents Tables Table 2.1 Standard Hose Numbering System ......................40 Table 2.2 Aerial Platform Torque Specifications .......................42 Table 2.3 Axles Torque Specifications ........................43 Table 2.4 Axles Maintenance Intervals ........................44 Table 2.5 Tire Specifications .............................45 Table 2.6 Floor Loading Pressure ..........................46 Table 2.7 Hydraulic Specifications ..........................47 Table 2.8 Specifications and Features ........................48...
Page 40: Section 2 - Maintenance Tables And Diagrams
Service and Maintenance Section 2 - Maintenance Tables and Diagrams Table 2.1 Standard Hose Numbering System H1104 0081 2 LENGTH IN FITTING LENGTH OF HOSE IN FRACTIONS (1/4” ARRANGEMENT WHOLE INCHES INCREMENTS) I.E. (See Schedule HOSE SIZE 1=1/4” Below) (See Chart 2=1/2”...
Page 41 Section 2 - Maintenance Tables and Diagrams Service and Maintenance Table 2.1 Standard Hose Numbering System (Continued) Fitting Arrangement Schedule (Continued from the previous page) S.A.E. HOSE HOSE PREFIX HOSE END FITTING HOSE END FITTING SPECIFICATION NO FITTING NO FITTING 100R4 NO FITTING NO FITTING...
Page 42 Service and Maintenance Section 2 - Maintenance Tables and Diagrams Table 2.2 Aerial Platform Torque Specifications Location Description Torque (ft-lb) Torque (Nm) Base Trunnion Mount BOLT, Hex head (3.4"-10 x 4.5", Grade 8) Rear Axle Mount BOLT, Hex head (M20 x 2.5 120mm, Grade 10.9) Oscillating axle Mount BOLT, Hex head (M20 x 2.5 120mm, Grade 10.9) Lockout Cylinder Pin...
Page 43 Section 2 - Maintenance Tables and Diagrams Service and Maintenance Table 2.3 Axles Torque Specifications Type of Bolt 10.9 12.9 Size of Bolt Normali Normali Normali Loctite 270 Loctite 270 Loctite 270 Loctite 242 Loctite 242 Loctite 242 (Nm) (Nm) (Nm) (Nm) (Nm)
Page 44 Service and Maintenance Section 2 - Maintenance Tables and Diagrams Table 2.4 Axles Maintenance Intervals Operation Lubricants Frequency Differential monthly Check Levels Planetary reduction every 200 hours SAE85W90 (API GL4 - MIL L-2105) Differential every 800 hours * With additives for oil-bath brakes Oil Change Planetary reduction every 1000 hours *...
Page 45 Intermixing tires of different types or using tires of types other than those originally supplied with this equipment can adversely affect stability. Therefore, replace tires only with the exact original Skyjack-approved type. Failure to operate with matched approved tires in good condition may result in death or serious injury.
Page 46 Intermixing tires of different types or using tires of types other than those originally supplied with this equipment can adversely affect stability. Therefore, replace tires only with the exact original Skyjack-approved type. Failure to operate with matched approved tires in good condition may result in death or serious injury.
Page 47 Section 2 - Maintenance Tables and Diagrams Service and Maintenance Table 2.7 Hydraulic Specifications SJ 40T / 45T SJ 45T SJ 45T DESCRIPTION ANSI 2.8 CIR Displacement - 2600 rpm 46 CC 46 CC 30 gpm @ 2600 rpm Drive Pump Pressure 5000 psi 345 bar 345 bar...
Page 48 Service and Maintenance Section 2 - Maintenance Tables and Diagrams Table 2.8 Specifications and Features MODEL SJ 40T (ANSI/CSA) SJ 45T (ANSI/CSA) SJ 45T (CE) SJ 45T (AS) Maximum Load Capacity 650 lb. (295 kg) 500 lb (227 kg) 500 lb (227 kg) 500 lb (227 kg) 72 in.
Page 49 Section 2 - Maintenance Tables and Diagrams Service and Maintenance Table 2.8 Specifications and Features (Continued) MODEL SJ 40T (ANSI/CSA) SJ 45T (ALL STANDARDS) Engine Type Deutz D2011L03i RPM Settings 1600 Low / 2100 / 2675 High Gross Intermittent HP 36 kW / 48 Hp Horsepower @ 2600 rpm (intermittent) 34 kW / 45 Hp...
Page 50 Service and Maintenance Section 2 - Maintenance Tables and Diagrams Diagram 2.1 Dimension and Reach Diagram - SJ 40T Reach Diagram - 40T Dimensions - 40T Telescopic Boom Series Models SJ 40T, SJ 45T Page 50 December 2007 143872...
Page 51 Section 2 - Maintenance Tables and Diagrams Service and Maintenance Diagram 2.2 Dimension and Reach Diagram - SJ 45T Reach Diagram - 45T Dimensions - 45T Telescopic Boom Series Models SJ 40T, SJ 45T December 2007 Page 51 143872...
Page 52 Service and Maintenance Section 2 - Maintenance Tables and Diagrams Diagram 2.3 Axle Oscillation Diagrams WARNING Do not raise the platform in work mode if it is not on a firm level surface. Axle oscillation free (travel mode) - drive speed 4.5 mph max. Axle oscillation locked (work mode) - drive speed 0.5 mph max.
Page 53 Section 3 SYSTEM COMPONENT IDENTIFICATION AND SCHEMATICS Table of Contents Charts 3.1 Hydraulic Symbol Chart ............................55 3.2 Electrical Symbol Chart ............................56 3.3 Wire Number and Color Code ..........................57 3.4 Hydraulic Schematic Parts List ..........................58 3.5 Electrical Component Parts List..........................61 Diagrams and Schematics 3.6 Rotary Manifold and Port Identifications ......................64 3.7a Brake Manifold and Port Identifications ......................65 3.7b Brake Manifold and Port Identifications ......................66...
Page 54 Table of Contents (Continued) 3.38b Base Control Console Diagram (ANSI/CSA SJ 40T - GM Dual Fuel Engine) ..........104 3.39 Electrical Schematic Diagram (ANSI/CSA - Deutz Diesel Engine) ..............105 3.40 Electrical Schematic Diagram (CE SJ 45T - Deutz Diesel Engine) ..............106 3.41 Electrical Schematic Diagram (AS SJ 45T - Deutz Diesel Engine) ..............107 3.42a Electrical Schematic Diagram (ANSI/CSA - GM Dual Fuel Engine) ............108 3.42b Electrical Schematic Diagram (ANSI/CSA - GM Dual Fuel Engine) ............109...
Page 55: Section 3 - System Component Identification And Schematics
Section 3 - System Component Identification and Schematics Service and Maintenance 3.1 Hydraulic Symbol Chart VARIABLE DISPLACEMENT SHUTTLE VALVE VELOCITY FUSE LINE CROSSING PUMP ACCUMULATOR, SINGLE ACTING LINE JOINED HAND PUMP GAS CHARGED CYLINDER HYDRAULIC CUSHION DOUBLE ACTING RELIEF VALVE TANK CYLINDER CYLINDER...
Page 56: Electrical Symbol Chart
Service and Maintenance Section 3 - System Component Identification and Schematics 3.2 Electrical Symbol Chart CIRCUITS CROSSING LIMIT SWITCH KEY SWITCH HOURMETER NO CONNECTION LIMIT SWITCH CIRCUITS LIGHT FOOT SWITCH CONNECTED CLOSED LIMIT SWITCH HYDRAULIC BATTERY TOGGLE SWITCH VALVE COIL PROPORTIONAL LIMIT SWITCH PUSH BUTTON...
Page 57: Wire Number And Color Code
Section 3 - System Component Identification and Schematics Service and Maintenance 3.3 Wire Number and Color Code WIRE WIRE WIRE WIRE WIRE WIRE WIRE WIRE WIRE WIRE COLOR COLOR COLOR COLOR COLOR ORG/BLU YEL/WHT ORG/BRN GRN SHLD WHT/RED YEL/ORG GREY BLK SHLD BLU/PINK BLK/WHT...
Page 58: Hydraulic Schematic Parts List
Service and Maintenance Section 3 - System Component Identification and Schematics 3.4 Hydraulic Schematic Parts List Index Skyjack Qty. Description Part No. 2H-21A 141408 VALVE, Pressure dump 2H-42 141418 VALVE, Control (Flow enable) 3H-15 141486 VALVE, Control (Drive pump control reverse)
Page 59 Section 3 - System Component Identification and Schematics Service and Maintenance 3.4 Hydraulic Schematic Parts List (Continued) Index Skyjack Qty. Description Part No. Parts list continued from previous page. 141405 VALVE, Check (Main control valve - P2) 141406 VALVE, Check (Main control valve - steer)
Page 60 Service and Maintenance Section 3 - System Component Identification and Schematics 3.4 Hydraulic Schematic Parts List (Continued) Index Skyjack Qty. Description Part No. Parts list continued from previous page. 141230 VALVE, Relief (Drive pump) 141440 VALVE, Relief (Brake) VALVE, Relief (EPU)
Page 61: Electrical Component Parts List
3.5 Electrical Component Parts List SUPPLY (B+) (Common) CONTROL (B+) GROUND (B-) NORMALLY NORMALLY CLOSED OPEN CONTACT CONTACT Index Skyjack Qty. Description Part No. 01CR 127131 RELAY, 12 Volt 40 Amp (E-pump) 08BCR 127131 RELAY, 12 Volt 40 Amp (Enable) 08CR...
Page 62 Service and Maintenance Section 3 - System Component Identification and Schematics 3.5 Electrical Component Parts List Index Skyjack Qty. Description Part No. Parts list continued from previous page. 2H-42 143966 COIL, 12 Volt (Proportional flow enable) 2H-85 143967 COIL, 12 Volt (Optional generator valve)
Page 63 Section 3 - System Component Identification and Schematics Service and Maintenance 3.5 Electrical Component Parts List (Cotinued) Index Skyjack Qty. Description Part No. Parts list continued from previous page. 138228 MODULE, Lower indicating 138229 MODULE, Upper indicating 147229 LED BLOCK, Red (12 volts) (Base control console)
Page 64: Rotary Manifold And Port Identifications
Service and Maintenance Section 3 - System Component Identification and Schematics 3.6 Rotary Manifold and Port Identifications Port 8 To Drive Pump Port 7 To Drive Pump Port 9 To Hydraulic Tank Port 2 To Axle Lockout Valve Port 5 To Main Manifold Port 4 Port 1...
Page 65: Brake Manifold And Port Identifications
Section 3 - System Component Identification and Schematics Service and Maintenance 3.7a Brake Manifold and Port Identifications For Machines with S/N 98000585 & Above CV14 Check Valve To Hydraulic Tank To Return Line Filter Relief Valve To Drive Pump To Main Manifold Shuttle Valve To Drive Pump Hand Pump Release...
Page 66: Brake Manifold And Port Identifications
Service and Maintenance Section 3 - System Component Identification and Schematics 3.7b Brake Manifold and Port Identifications For Machines with S/N 98000584 & Below To Return Line Filter CV14 Check Valve Relief Valve To Drive Pump To Main Manifold To Drive Pump Shuttle Valve Hand Pump Release Loop Flush Valve...
Page 67: System Pump And Port Identifications
Section 3 - System Component Identification and Schematics Service and Maintenance 3.8 System Pump and Port Identifications Port B To High Pressure Filter 3H-V2 Load Sense Adjusting Stem 3H-V1 Pressure Compensator Adjusting Stem To Main Manifold To Shut-off Valve To Hydraulic Tank M138117AA_S3 Telescopic Boom Series Models SJ 40T, SJ 45T...
Page 68: Drive Pump And Port Identifications
Service and Maintenance Section 3 - System Component Identification and Schematics 3.9 Drive Pump and Port Identifications To Shut-off Valve To Brake Manifold To Hydraulic Tank To Charge Filter To Charge Filter Bypass Valve To Brake Manifold Charge Pump Relief Valve To Rotary Manifold To Rotary Manifold M138116AA_S3...
Page 69: Drive Motor And Port Identifications
Section 3 - System Component Identification and Schematics Service and Maintenance 3.10 Drive Motor and Port Identifications To Rotary Manifold To Rotary Manifold To Rotary Manifold To Rotary Manifold M138118AA_S3 Telescopic Boom Series Models SJ 40T, SJ 45T December 2007 Page 69 143872...
Page 70: Jib Valve And Port Identifications
Service and Maintenance Section 3 - System Component Identification and Schematics 3.11 Jib Valve and Port Identifications 4A-34 4H-37 Jib Down Valve Platform Right Rotate Valve 4H-36 4A-35 Platform Left Rotate Valve Jib Up Valve To Jib Cylinder To Bulkhead To Jib Cylinder (Bracket Weldment) To Bulkhead...
Page 71: No Jib Valve And Port Identifications
Section 3 - System Component Identification and Schematics Service and Maintenance 3.12 No Jib Valve and Port Identifications 4H-37 Platform Right Rotate Valve 4H-36 Platform Left Rotate Valve To Bulkhead (Bracket Weldment) To Bulkhead (Bracket Weldment) 3(P) To Bulkhead (Main Boom) 4(T) To Bulkhead (Main Boom)
Page 72: Axle Lockout Valve (If Equipped) And Port Identifications
Service and Maintenance Section 3 - System Component Identification and Schematics 3.13 Axle Lockout Valve (If Equipped) and Port Identifications 3H-65 To Rotary Manifold Axle Lockout Valve To Charge Filter To Rotary Manifold M139133AA_S3 Telescopic Boom Series Models SJ 40T, SJ 45T Page 72 December 2007 143872...
Page 73: Main Manifold And Port Identifications
To Bulkhead (Turret) GP2 (ANSI/CSA) Test Port To Bulkhead (Turret) To System Pump (with generator option) To Bulkhead (Main Boom) To Generator Option To Return Line Filter M139132AD-S3 Telescopic Boom Series SKYJACK, Page 73 Models SJ 40T, SJ 45T 143872...
Page 74: Main Manifold And Electrical Identifications
Turret Rotate Left Valve Boom Extend Valve 4H-14 Boom Up Valve 2H-42 Flow Enable Valve 4H-38 Boom Retract Valve 4H-40 Manual Level Down Valve 4H-41 Manual Level Up Valve M139132AD-S3 SKYJACK, Page 74 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 75: Main Manifold And Hydraulic Identifications
Shuttle Valve Boom Extension Relief Valve Orifice Orifice Check Valve Orifice Check Valve Check Valve Check Valve CV10 CV12 Check Valve Check Valve Check Valve CV11 Check Valve M139132AD-S3 Telescopic Boom Series SKYJACK, Page 75 Models SJ 40T, SJ 45T 143872...
Page 76: Main Harness Wiring Diagram
PIN 2 - 02 WHITE (SPLICE #1) PIN 2 - 02 WHITE (SPLICE #1) DUMP VALVE PIN 1 - 21A WHITE/RED PIN 2 - 02 WHITE (SPLICE #1) M144703AB SKYJACK, Page 76 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 77: Main Harness Wiring Diagram
PIN 23 - 02 - WHITE (SPLICE #2) [14 GA.] PIN 2 - 02 WHITE (SPLICE #1) PIN 24 - 02 - WHITE (SPLICE #3) [14 GA.] M139132AD-S3 Telescopic Boom Series SKYJACK, Page 77 Models SJ 40T, SJ 45T 143872...
Page 78: Ecu Engine Wiring Diagram (Deutz Diesel Engine)
PIN 6 - 02 - WHITE (IF EQUIPPED) PIN 10 - 11 - WHITE/ORANGE PIN 11 - 00A - WHITE PIN 12 - 54A - PURPLE/RED (IF EQUIPPED) M138708AA SKYJACK, Page 78 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 79: Engine Interface Harness (Gm Dual Fuel Engine)
PIN C - 3002 WHITE PIN D - 3056 BLACK PIN F - 57A BROWN/GREEN PIN G - 76 BROWN/BLUE PIN H - 11 WHITE/ORANGE PINS (E,J,K,L,M,N,P,R,S) - N/U M144265AD Telescopic Boom Series SKYJACK, Page 79 Models SJ 40T, SJ 45T 143872...
Page 80: Glow Plug Harness
3.20 Glow Plug Harness TO AIR BOX LEFT CYLINDER RELAY SOCKET DETAIL CENTRE CYLINDER RIGHT CYLINDER SOCKET #87 BASE CONTROL BOX TERMINAL BLACK - 54A STRIP TO ENGINE STARTER M138849AB SKYJACK, Page 80 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 81: Harnesses
PIN 4 - 02 WHITE PIN G - N/C PIN 1 - 04A BLACK PIN 2 - 08A WHITE PIN 3 - N/C PIN G - N/C M138717AB M138719AB M138721AB Telescopic Boom Series SKYJACK, Page 81 Models SJ 40T, SJ 45T 143872...
Page 82: Platform Control Cable Harnesses
POSITION 21 - PINK/WHITE POSITION 22 - PINK/PURPLE POSITION 22 - PINK/PURPLE POSITION 23 - BLUE/WHITE/RED POSITION 23 - BLUE/WHITE/RED POSITION 24 - BLUE/WHITE/YELLOW POSITION 24 - BLUE/WHITE/YELLOW FEMALE M138758AA1 SKYJACK, Page 82 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 83: Limit Switch Connections (Ansi/Csa)
BLUE LS3 - @ BOOM (6" EXTEND) (IF EQUIPPED) BASE CONTROL BOX TERMINAL STRIP BLACK BROWN LS2 - @ UPPER TURRET BLACK/WHITE BLUE LS1 - @ SWIVEL M143993AB Telescopic Boom Series SKYJACK, Page 83 Models SJ 40T, SJ 45T 143872...
Page 84: Limit Switch Connections (Ce & As)
BLACK BLUE LS3 - @ BOOM (6" EXTEND) BASE CONTROL BOX TERMINAL LS2 - @ TURRET (15 DEGREES) STRIP BLACK/WHITE BROWN BLACK BLUE LS1 - @ SWIVEL M144462AB SKYJACK, Page 84 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 85: Load Sensing Cable Connection (Ce & As)
3.25 Load Sensing Cable Connection (CE & AS) PLUG B PLUG A PLATFORM CONTROL CONSOLE M144463AB Telescopic Boom Series SKYJACK, Page 85 Models SJ 40T, SJ 45T 143872...
Page 86: Deutz Diesel Engine Battery Cable Locations
Serial Breakdown Reference Chart Model Reference Serial Number Fig 3.25a 98000632 & below SJ 45T Fig 3.25b 98000633 & above TO STARTER POST NOTE: BATTERY BOOTS NOT SHOWN. M144571AA SKYJACK, Page 86 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 87: Deutz Diesel Engine Battery Cable Locations
3.26b Deutz Diesel Engine Battery Cable Locations Serial Breakdown Reference Chart Model Reference Serial Number Fig 3.25a 98000632 & below SJ 45T Fig 3.25b 98000633 & above M138850AD Telescopic Boom Series SKYJACK, Page 87 Models SJ 40T, SJ 45T 143872...
Page 88 SKYJACK, Page 88 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 89: Hydraulic Schematic Diagram
TO REAR OF DRIVE PUMP SAE04 NOTE C: - PLUGGED WHEN OIL COOLER ONLY ADDED (NO GENERATOR) #4 - ON NO-JIB MOUNTING BRACKET SAE20 VIEW OF HYDRAULIC TANK PORT PHYSICAL LOCATIONS M162607AA Telescopic Boom Series SKYJACK, Page 89 Models SJ 40T, SJ 45T 143872...
Page 90: Hydraulic Schematic Diagram
NOTE: SPRING CAVITY DRAIN LINES HAVE SAE20 BEEN REMOVED FOR CLARITY: ALL COUNTER BALANCE, RELIEF, LOAD SENSE, AND PRESSURE COMPENSATING VALVES AFFECTED SHUT-OFF REAR AXLE SAHR VALVE BRAKE CYLINDER M144705AA SKYJACK, Page 90 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 91: Hydraulic Schematic Diagram
BALANCE, RELIEF, LOAD SENSE, AND VALVE REAR AXLE SAHR BRAKE CYLINDER NOTE C: - PLUGGED WHEN OIL COOLER ONLY ADDED (NO GENERATOR) PRESSURE COMPENSATING VALVES AFFECTED AXLE LOCKOUT VALVE M143950AH1 Telescopic Boom Series SKYJACK, Page 91 Models SJ 40T, SJ 45T 143872...
Page 92: Platform Control Console Diagram (Ansi/Csa Sj 45T - Deutz Diesel Engine)
GREEN D-SIG R4=30 PURPLE D-SIG X-SIG Y-SIG GREEN OCM PLUG 34-BLACK 02-WHITE 36-BLACK 02-WHITE 04A-BLACK 35-RED 02-GREEN 37-RED 02-GREEN 08A-WHITE 4P-MALE 4P-FEMALE 3P-FEMALE 4" PIGTAIL TYP . M143985AC SKYJACK, Page 92 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 93: Platform Control Console Diagram (Ansi/Csa Sj 40T - Deutz Diesel Engine)
S4-E STOP S23-HORN JUMPER SUPP SUPP GREEN D-SIG R4=30 PURPLE D-SIG X-SIG Y-SIG GREEN OCM PLUG 36-BLACK 02-WHITE 04A-BLACK 37-RED 02-GREEN 08A-WHITE 4P-FEMALE 3P-FEMALE 4" PIGTAIL TYP . M143983AC Telescopic Boom Series SKYJACK, Page 93 Models SJ 40T, SJ 45T 143872...
Page 94: Platform Control Console Diagram (Ce & As Sj 45T - Deutz Diesel Engine)
GREEN D-SIG R4=30 PURPLE D-SIG X-SIG Y-SIG GREEN OCM PLUG 34-BLACK 02-WHITE 36-BLACK 02-WHITE 04A-BLACK 35-RED 02-GREEN 37-RED 02-GREEN 08A-WHITE 4P-MALE 4P-FEMALE 3P-FEMALE 4" PIGTAIL TYP . M144381AB SKYJACK, Page 94 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 95: Platform Control Console Diagram (Ansi/Csa Sj 45T - Gm Dual Fuel Engine)
GREEN D-SIG R4=30 PURPLE D-SIG X-SIG Y-SIG GREEN OCM PLUG 34-BLACK 02-WHITE 36-BLACK 02-WHITE 04A-BLACK 35-RED 02-GREEN 37-RED 02-GREEN 08A-WHITE 4P-MALE 4P-FEMALE 3P-FEMALE 4" PIGTAIL TYP . M144152AC Telescopic Boom Series SKYJACK, Page 95 Models SJ 40T, SJ 45T 143872...
Page 96: Platform Control Console Diagram (Ansi/Csa Sj 40T - Gm Dual Fuel Engine)
S4-E STOP S23-HORN JUMPER SUPP SUPP GREEN D-SIG R4=30 PURPLE D-SIG X-SIG Y-SIG GREEN 36-BLACK 02-WHITE 04A-BLACK 37-RED 02-GREEN 08A-WHITE OCM PLUG 4P-FEMALE 3P-FEMALE 4" PIGTAIL TYP . M144150AD SKYJACK, Page 96 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 97: Base Control Console Diagram (Ansi/Csa Sj 45T - Deutz Diesel Engine)
S2-KSW 07-14ga LEVEL SENSOR YELLOW GREEN 02 WHITE BLACK THROUGH LOWER LEFT STRAIN RELIEF TO DEUTZ EDC H1 HORN HARNESS (FROM STR. RELIEF) PASS THROUGH STRAIN RELIEF M143984AF Telescopic Boom Series SKYJACK, Page 97 Models SJ 40T, SJ 45T 143872...
Page 98: Base Control Console Diagram (Ansi/Csa Sj 40T - Deutz Diesel Engine)
S2-KSW 07-14ga LEVEL SENSOR YELLOW GREEN 02 WHITE BLACK THROUGH LOWER LEFT STRAIN RELIEF TO DEUTZ EDC H1 HORN HARNESS (FROM STR. RELIEF) PASS THROUGH STRAIN RELIEF M143982AF SKYJACK, Page 98 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 99: Base Control Console Diagram (Ce Sj 45T - Deutz Diesel Engine)
TURRET HARNESS DO NOT ATTACH PLUG S2-KSW 07-14ga THROUGH LOWER LEFT STRAIN RELIEF LEVEL SENSOR H1 HORN YELLOW GREEN WHITE (FROM STR. RELIEF) TO DEUTZ EDC HARNESS M144380AF1 Telescopic Boom Series SKYJACK, Page 99 Models SJ 40T, SJ 45T 143872...
Page 100: Base Control Console Diagram (As Sj 45T - Deutz Diesel Engine)
DO NOT ATTACH S2-KSW 07-14ga THROUGH LOWER LEFT STRAIN RELIEF 103041 LEVEL SENSOR YELLOW H1 HORN L=6" GREEN WHITE L=6" (FROM STR. RELIEF) TO DEUTZ EDC HARNESS 138708 M144785AC SKYJACK, Page 100 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 101: Base Control Console Diagram (Ansi/Csa Sj 45T - Gm Dual Fuel Engine)
PIN 7 - 78 RED/BLUE PIN 8 - 79 BROWN/PURPLE PIN 9 - 00B WHITE PIN 10 - 00A WHITE PIN 11 - N/U PIN 12 - N/U M144151AG Telescopic Boom Series SKYJACK, Page 101 Models SJ 40T, SJ 45T 143872...
Page 102: Base Control Console Diagram (Ansi/Csa Sj 45T - Gm Dual Fuel Engine)
7" PIGTAIL, THROUGH LOWER RIGHT STRAIN RELIEF PIN 7 - 78 RED/BLUE PIN 8 - 79 BROWN/PURPLE PIN 9 - N/U PIN 10 - N/U PIN 11 - N/U PIN 12 - N/U M144151AF SKYJACK, Page 102 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 103: Base Control Console Diagram (Ansi/Csa Sj 40T - Gm Dual Fuel Engine)
PIN 7 - 78 RED/BLUE PIN 8 - 79 BROWN/PURPLE PIN 9 - 00B WHITE PIN 10 - 00A WHITE PIN 11 - N/U PIN 12 - N/U M144149AE Telescopic Boom Series SKYJACK, Page 103 Models SJ 40T, SJ 45T 143872...
Page 104: Base Control Console Diagram (Ansi/Csa Sj 40T - Gm Dual Fuel Engine)
7" PIGTAIL, THROUGH LOWER RIGHT STRAIN RELIEF PIN 7 - 78 RED/BLUE PIN 8 - 79 BROWN/PURPLE PIN 9 - N/U PIN 10 - N/U PIN 11 - N/U PIN 12 - N/U M144149AE SKYJACK, Page 104 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 105: Electrical Schematic Diagram (Ansi/Csa - Deutz Diesel Engine)
3.39 Electrical Schematic Diagram (ANSI/CSA - Deutz Diesel Engine) M138222AJ Telescopic Boom Series SKYJACK, Page 105 Models SJ 40T, SJ 45T 143872...
Page 106: Electrical Schematic Diagram (Ce Sj 45T - Deutz Diesel Engine)
3.40 Electrical Schematic Diagram (CE SJ 45T - Deutz Diesel Engine) M144335AF SKYJACK, Page 106 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 107: Electrical Schematic Diagram (As Sj 45T - Deutz Diesel Engine)
3.41 Electrical Schematic Diagram (AS SJ 45T - Deutz Diesel Engine) AD, AE M144786AC Telescopic Boom Series SKYJACK, Page 107 Models SJ 40T, SJ 45T 143872...
Page 108: Electrical Schematic Diagram (Ansi/Csa - Gm Dual Fuel Engine)
3.42a Electrical Schematic Diagram (ANSI/CSA - GM Dual Fuel Engine) Serial Breakdown Reference Chart Models Serial Number Reference 98,000,714 to 98,001,141 Figure 3.41a 98,000,713 & Below Figure 3.41b Refer to Section 3.43. M138223AH SKYJACK, Page 108 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 109: Electrical Schematic Diagram (Ansi/Csa - Gm Dual Fuel Engine)
3.42b Electrical Schematic Diagram (ANSI/CSA - GM Dual Fuel Engine) Serial Breakdown Reference Chart Models Serial Number Reference 98,000,714 to 98,001,141 Figure 3.41a 98,000,713 & Below Figure 3.41b Refer to Section 3.42. M138223AG Telescopic Boom Series SKYJACK, Page 109 Models SJ 40T, SJ 45T 143872...
Page 110: Interface & Engine Electrical Schematic - Gm Dual Fuel Engine
3.43 Interface & Engine Electrical Schematic - GM Dual Fuel Engine CONNECTOR 2 DIAGNOSTIC CONNECTOR 1 M138223AE1 SKYJACK, Page 110 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 111: Engine Harnesses - Gm Dual Fuel Engine
3.44 Engine Harnesses - GM Dual Fuel Engine GPS1 OXS2 OXS1 2P-56 TPS2 TPS1 OPS1 IGC1 IGM1 CPS1 57ACR CPS2 2002CR 56CR PRV1 GI1-4 GI1-3 GI1-2 GI1-1 M138223AD_2 Telescopic Boom Series SKYJACK, Page 111 Models SJ 40T, SJ 45T 143872...
Page 112 SKYJACK, Page 112 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 113: Flashing Amber Light Connection
3.45 Flashing Amber Light Connection BLACK - 20 WHITE - 02 BASE CONTROL CONSOLE TERMINAL STRIP M144026AA_S3 Telescopic Boom Series SKYJACK, Page 113 Models SJ 40T, SJ 45T 143872...
Page 114: Generator Control Valves And Port Indentifcations
12kW Generator (Welder option) 8 GPM Flow Regulator To Pressure Tube To Pressure Tube To Main Manifold To Shuttle Valve To Main Manifold 2H-85 Generator Valve 2H-85 Generator Valve M138405AA_S3 M138989AA_S3 SKYJACK, Page 114 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 115: Oil Cooler Harness Connections
CONNECTOR PIN 2 - WHITE JMPR TO COOLER FAN PIN 1-PURPLE/BLUE CONNECTOR PIN 2-WHITE TO UNDER COOLER MOUNTING BOLT 110V GENERATOR CABLE (ANSI/CSA) GENERATOR TERMINAL CONSOLE M144106AB2 M144107AC Telescopic Boom Series SKYJACK, Page 115 Models SJ 40T, SJ 45T 143872...
Page 116: Generator Wire Kit Connections
TO DRIVE JOYSTICK S19-LEV S18-TELE S21-JIB S20-ROT S22- S10- S48- S6-IGN THROT TORQ R5=51 PLATFORM CONTROL CONSOLE BASE CONTROL CONSOLE GENERATOR WIRE KIT GENERATOR WIRE KIT M144108AB M144109AB SKYJACK, Page 116 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 117: Generator And Oil Cooler Connection Locations
3.49 Generator and Oil Cooler Connection Locations COOLER MOUNTING BOLT 110V GENERATOR CABLE GENERATOR VALVE OIL COOLER POWER HARNESS HARNESS M144106AA_LOC M144107AA_LOC Telescopic Boom Series SKYJACK, Page 117 Models SJ 40T, SJ 45T 143872...
Page 118: Kw Generator Connection Assembly
WHITE - JUMPER WHITE ORANGE BLACK BLACK - JUMPER GREEN WHITE GREEN BLACK GREEN ORANGE WHITE VIEW UNDER GENERATOR COVER BLACK BLACK WHITE BLACK WHITE GREEN LOCATED ON PLATFORM M144088_144089AB SKYJACK, Page 118 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 119: Kw Generator Connection Locations
3.51 12 kW Generator Connection Locations CABLE ASSEMBLY CABLE 110V GENERATOR CABLE GENERATOR VALVE HARNESS M144163AC Telescopic Boom Series SKYJACK, Page 119 Models SJ 40T, SJ 45T 143872...
Page 120 SKYJACK, Page 120 Telescopic Boom Series Models SJ 40T, SJ 45T 143872...
Page 121 Section 4 TROUBLESHOOTING INFORMATION Table of Contents Introduction ................................123 4.1 Electrical System 4.1-1 All Controls Inoperative..........................124 4.1-2 No Power To Platform ............................124 4.1-3 No Power to Base ............................124 4.1-4 Engine Will Not Crank from Base ........................125 4.1-5 Engine Will Not Crank from Platform ......................125 4.1-6 Engine Will Not Crank from Platform or Base (Deutz Diesel) ...............126 4.1-7 Engine Cranks but Will Not Start (Deutz Diesel) ...................126 4.1-8 Engine Will Not Crank from Platform or Base Control (GM Dual Fuel) ............127...
Page 122 Service and Maintenance Section 4 - Troubleshooting Information Table of Contents (Continued) 4.1-44 No Drive and Steer ............................145 4.1-45 No Forward Drive ............................145 4.1-46 No Reverse Drive ............................146 4.1-47 No High Speed Drive ...........................146 4.1-48 No Elevated Drive ............................148 4.1-49 No Left Steer ..............................148 4.1-50 No Right Steer..............................148 4.1-51 Direction Sensing Inoperative ........................149 4.1-52 Steer Direction Sensing Inoperative ......................149...
Page 123: Section 4 - Troubleshooting Information
Section 4 - Troubleshooting Information Service and Maintenance Introduction The following pages contain a table of Troubleshooting Information for locating and correcting most service trouble which can develop. Careful and accurate analysis of the systems listed in the table of Troubleshooting Information will localize the trouble more quickly than any other method.
Page 124: Electrical System
Service and Maintenance Section 4 - Troubleshooting Information NOTE All tests should be performed with boom over non-steering axle. 4.1 Electrical System 4.1-1 All Controls Inoperative 1. Battery disconnected or discharged. Connect battery or recharge. 2. Loose or broken wire #03 from battery to circuit breaker CB1. Check continuity.
Page 125: Engine Will Not Crank From Base
Section 4 - Troubleshooting Information Service and Maintenance 2. Loose or broken wire #12 from base key switch S2 to start switch S5. Check continuity. Replace if defective. 3. Loose or broken wire #12 from base key switch S2 to base connector plug A pin #9. Check continuity.
Page 126: Engine Will Not Crank From Platform Or Base (Deutz Diesel)
Service and Maintenance Section 4 - Troubleshooting Information 7. Loose or broken wire #57A from plug B pin #12 to relay 57ACR in base control console. Check continuity. Replace if defective. 4.1-6 Engine Will Not Crank from Platform or Base (Deutz Diesel) 1.
Page 127: Engine Will Not Crank From Platform Or Base Control (Gm Dual Fuel)
Section 4 - Troubleshooting Information Service and Maintenance 4. Defective relay 57BCR. Check relay. Replace if defective. 5. Glow plug circuit not operating. See “Glow Plug Circuit Inoperative” in this section. 6. No fuel in fuel tank or fuel line obstructions. Check fuel level and flow through lines.
Page 128: Engine Cranks But Will Not Start (Gm Dual Fuel)
Service and Maintenance Section 4 - Troubleshooting Information 4.1-9 Engine Cranks but Will Not Start (GM Dual Fuel) NOTE For additional engine troubleshooting refer to diagnostic trouble codes for use with the check engine light. 1. Loose or broken red wire from battery positive to relay 2002CR. Check continuity.
Page 129 Section 4 - Troubleshooting Information Service and Maintenance 22. Loose or broken red wire from battery positive to fuel pump relay 56CR. Check continuity. Replace if defective. 23. Loose or broken tan/black wire from ECU connector pin #84 to fuel pump relay 56CR. Check continuity.
Page 130: 10 Glow Plug Circuit Inoperative
Service and Maintenance Section 4 - Troubleshooting Information 43. Loose or broken red/light blue wire from fuse F9 to propane regulator PRV1. Check continuity. Replace if defective. 44. Loose or broken black wire from engine ground to propane regulator PRV1. Check continuity.
Page 131: 12 No Main Boom Down Or Turret Rotate From Base Control Console
Section 4 - Troubleshooting Information Service and Maintenance 11. Defective relay 21CR. Check relay. Replace if defective. 12. Loose or broken wire #21A from relay 21CR to turret harness plug pin #5. Check continuity. Replace if defective. 13. Loose or broken wire #21A from turret harness plug pin #5 to dump valve 2H-21A. Check continuity.
Page 132: 15 No Turret Rotate Left From Base Control Console
Service and Maintenance Section 4 - Troubleshooting Information 4.1-15 No Turret Rotate Left from Base Control Console 1. Loose or broken wire #20C from resistor R1 to turret rotate switch S13. Check continuity. Replace if defective. 2. Defective turret rotate switch S13. Check continuity through switch while activating rotate left function between wires #20C and #32.
Page 133: 18 No Telescope Extend From Base Control Console
Section 4 - Troubleshooting Information Service and Maintenance 4.1-18 No Telescope Extend From Base Control Console 1. Loose or broken wire #20A from function enable switch S7 to telescope switch S14. Check continuity. Replace if defective. 2. Defective telescope switch S14. Check continuity through switch while activating extend function between wires #20A and #39.
Page 134: 21 No Platform Rotate Left Or Right From Base Control Console
Service and Maintenance Section 4 - Troubleshooting Information 5. Loose or broken wire #37 from platform rotate switch S16 to base connector plug B pin #2. Check continuity. Replace if defective. 6. Loose or broken wire #37 in boom cable B or its connectors. Check for continuity between pins #2 on cable B.
Page 135: 23 No Jib Down From Base Control Console
Section 4 - Troubleshooting Information Service and Maintenance 10. Defective jib up valve coil 4H-35. Check continuity and resistance through coil. Replace if defective. 4.1-23 No Jib Down from Base Control Console 1. Loose or broken wire #20A from function enable switch S7 to jib switch S17. Check continuity.
Page 136: 26 No Manual Platform Level Down From Base Control Console
Service and Maintenance Section 4 - Troubleshooting Information 5. Loose or broken wire #41 from turret harness pin plug pin#15 platform level up valve 4H-41. Check continuity. Replace if defective. 6. Loose or broken wire #02 from turret harness pin plug platform level up valve 4H-41. Check continuity.
Page 137: 28 No Manual Platform Level Down From Platform Control Console
Section 4 - Troubleshooting Information Service and Maintenance 2. Defective platform level switch S19. Check continuity through switch while activating level up function between wires #90A and #41. If no continuity found replace switch. 3. Loose or broken wire #41 from platform level switch S19 to platform terminal block. Check continuity.
Page 138: 30 No Boom Up From Platform Control Console
Service and Maintenance Section 4 - Troubleshooting Information 12. Loose or broken wire #02 from platform terminal block to valve driver pin #24, 25 & 26. Check continuity. Replace if defective. 13. No output on pin #16 of the valve driver to wire #08B. Check pin #6 for 12 volts.
Page 139: 31 No Boom Down From Platform Control Console
Section 4 - Troubleshooting Information Service and Maintenance 13. Defective boom up valve coil 4H-14. Check continuity and resistance through coil. Replace if defective. 4.1-31 No Boom Down From Platform Control Console 1. Loose or broken wire #04 from platform terminal block to joystick controller A1. Check continuity.
Page 140: 33 No Turret Right From Platform Control Console
Service and Maintenance Section 4 - Troubleshooting Information 8. Loose or broken wire #32 in boom cable A or its connectors. Check for continuity between pins #21 on cable A. Check for loose or corroded connections on cable connectors. Replace if wire is defective. 9.
Page 141: 35 No Telescope Out From Platform Control Console
Section 4 - Troubleshooting Information Service and Maintenance 2. Defective telescope switch S18. Check continuity through switch while activating in function between wires #08 and #38A. 3. Loose or broken wire #38A from telescope switch S18 to valve driver pin #18. Check continuity.
Page 142: 36 No Platform Rotate Or Jib Function From Platform Control Console
Service and Maintenance Section 4 - Troubleshooting Information 12. Defective telescope out valve coil 4H-39. Check continuity and resistance through coil. Replace if defective. 4.1-36 No Platform Rotate or Jib Function from Platform Control Console 1. Loose or broken wire #08 from platform terminal block to rotate wwitch S20 and jib switch S21. Check continuity.
Page 143: 39 No Jib Up From Platform Control Console
Section 4 - Troubleshooting Information Service and Maintenance 5. Loose or broken wire #36A from platform terminal block to valve driver pin #32. Check continuity. Replace if defective. 6. Loose or broken wire #37 or #02 from platform terminal block to rotate right valve 4H-37. Check continuity.
Page 144: 42 High Throttle Inoperative
Service and Maintenance Section 4 - Troubleshooting Information (Deutz Diesel Only) 5. Loose or broken wire #79 from base plug B pin #18 to relay 79CR. Check continuity. Replace if defective. 6. Loose or broken wire #02 from base terminal block to relay 79CR. Check continuity.
Page 145: 43 Brake Will Not Release
Section 4 - Troubleshooting Information Service and Maintenance (GM Engine Only) 11. Loose or broken wire #78 from base plug B pin #17 to engine harness plug. Check continuity. Replace if defective. 12. Loose or broken wire #78 from engine harness plug to GM engine connector 2. Check continuity.
Page 146: 46 No Reverse Drive
Service and Maintenance Section 4 - Troubleshooting Information 2. Loose or broken wire ”D-signal” from drive joystick A2 to valve driver pin #27. Check continuity. Replace if defective. 3. No output from valve driver pin #34 to wire #16. Check pin #34 for minimum 2 volts. If no voltage present with foot on footswitch check section 5 for valve driver test procedure.
Page 147 Section 4 - Troubleshooting Information Service and Maintenance 2. Open or defective limit switch LS2. Ensure boom is below 15 degrees. Adjust switch if required. Check continuity through switch. Replace if required. 3. Loose or broken wire #29 from limit switch LS2 to base terminal block. Check continuity.
Page 148: 48 No Elevated Drive
Service and Maintenance Section 4 - Troubleshooting Information 4.1-48 No Elevated Drive NOTE Aerial platform must be level to drive elevated. 1. Loose or broken wire #09 or #02 from base terminal block to level sensor TS1. Check continuity. Replace if defective. 2.
Page 149: 51 Direction Sensing Inoperative
Section 4 - Troubleshooting Information Service and Maintenance 4. Defective N/C contacts in relay 17ACR2. Check relay. Replace if defective. 5. Loose or broken wire #23A from relay 17ACR2 to plug A pin #16 in platform control console. Check continuity. Replace if defective. 6.
Page 150: Hydraulic System
Service and Maintenance Section 4 - Troubleshooting Information 4.2 Hydraulic System 4.2-1 All Controls Inoperative 1. Broken or defective drive pump shaft or coupling. Check pump shaft and coupling. Replace if defective. 2. Hydraulic oil level low. Check oil level. Fill to proper level. 4.2-2 All Boom Functions Inoperative 1.
Page 151: No Turret Rotate Left
Section 4 - Troubleshooting Information Service and Maintenance 4.2-5 No Turret Rotate Left 1. Stuck or defective rotate left valve 4H-32. Clean valve. Check operation of valve. Repair or replace valve as required. 2. Stuck or defective shuttle valve SV3. Clean valve.
Page 152: No Boom Retract
Service and Maintenance Section 4 - Troubleshooting Information 4. Stuck or defective relief valve RV7. Set valve to specifications. Check O-rings and clean valve. Repair or replace valve as required. 5. Stuck or defective counterbalance valve CB6. Clean valve. Check O-rings on valve. Repair or replace valve as required. 6.
Page 153: 11 No Platform Rotation Right
Section 4 - Troubleshooting Information Service and Maintenance 4.2-11 No Platform Rotation Right 1. Stuck or defective proportional flow enable valve 2H-42. Clean valve. Check O-rings on valve. Check operation of valve. Repair or replace valve as required. 2. Stuck or defective check valve CV12. Clean valve.
Page 154: 15 Brake Will Not Release
Service and Maintenance Section 4 - Troubleshooting Information 4.2-15 Brake will not Release 1. Stuck or defective shuttle valve SV2. Clean valve. Check O-rings on valve. Check operation of valve. Repair or replace valve as required. 2. Defective or misadjusted pressure reducing valve PR1. Set valve to specifications.
Page 155: 19 No Reverse Drive
Section 4 - Troubleshooting Information Service and Maintenance 2. Defective or misadjusted drive relief valve RV1. See section 5 for drive pump set up procedures. 4.2-19 No Reverse Drive 1. Defective pump displacement control 3H-15. Check control. Replace if defective. 2.
Page 156: 24 Axle Will Not Lock
Service and Maintenance Section 4 - Troubleshooting Information 4.2-24 Axle Will Not Lock NOTE Axle is in constant float if boom is fully retacted and is below 15 de- grees of elevation. 1. Axle lockout valve 3H-65 is stuck in shifted position or is defective. Clean valve.
Page 157: Load Sensing System - Ce
Section 4 - Troubleshooting Information Service and Maintenance 4.3 Load Sensing System - CE 4.3-1 Green Power LED is not Flashing 1. Loose or broken wires #60 and #02 at platform terminal block. Check for connections. Check for voltage (12V). 2.
Page 158 Notes Telescopic Boom Series Models SJ 40T, SJ 45T Page 158 December 2007 143872...
Page 159 Section 5 PROCEDURES Table of Contents General ..................................161 Safety and Workmanship ............................161 Platform 5.1-1 Human Machine Interface (HMI) ........................161 5.1-2 User Interface Keys ............................162 OCM Character Functions Charts .........................162 OCM Operating Values Chart ........................163 5.1-3 How to Select Functionality ...........................164 5.1-4 How to View OCM Operation ........................165 5.1-5 How to Unlock and Modify OCM Settings.....................166 5.1-6 OCM Pin Voltage Reference ..........................167...
Page 160 Service and Maintenance Section 5 - Procedures List of Procedures (Continued) 5.5-5 ECU Pin Reference Chart ..........................187 5.5-6 Fuse Block Layout ............................188 Hydraulic Tank 5.6-1 Change Hydraulic Tank Filter ........................189 5.6-2 Change Hydraulic Oil .............................189 Manifold and Hydraulic Pumps 5.7-1 Hydraulic Brake Pressure Adjustment......................190 5.7-2 Hydraulic Standby Pressure Adjustment ......................191 5.7-3 Hydraulic High Pressure Adjustment ......................192 5.7-4 Hydraulic System Relief Valve Adjustment ....................193...
Page 161: Section 5 - Procedures
Section 5 - Procedures Service and Maintenance General The following information is provided to assist you in the use and application of servicing and maintenance procedures contained in this chapter. Safety and Workmanship Your safety, and that of others, is the first consideration when engaging in the maintenance of equipment. Always be conscious of weight.
Page 162: User Interface Keys
Service and Maintenance Section 5 - Procedures 5.1-2 User Interface Keys 1.0-1 <MENU> enters a new menu screen and/or MENU SELECT 1.0-2 <SELECT> select the flashing item. 1.1-1 <MINUS> decreases an adjustable parameter such as ramp time. ---- 1.1-2 <DOWN> selects the previous item in the current menu’s list.
Page 163: Ocm Operating Values Chart
Section 5 - Procedures Service and Maintenance OCM Operating Values Chart Input Expected Value Description AI 1 0.5V to 8.5V Drive Joystick AI 2 0.5V to 8.5V Turret Rotation Joystick AI 3 0.5V to 8.5V Boom Elevation Joystick AI 4 0.5V to 7.5V Flow Enable Rotary Potentiometer DI 1...
Page 164: How To Select Functionality
Service and Maintenance Section 5 - Procedures 5.1-3 How to Select Functionality STARTING MODE: NO CONFIG   + SCREEN FUNCTIONS OFF MENU UNLOCK SETUP?   ENTER PASSWORD SOFTWARE REVISION 0** PRESS SELECT + MODEL SERIAL NUMBER SELEC 0 (FLASHING) (FLASHING) 5X   MENU ...
Page 165: How To View Ocm Operation
Section 5 - Procedures Service and Maintenance 5.1-4 How to View OCM Operation As a joystick or toggle switch is being activated, the OCM screen will display the active function and % output. Also, the following procedure will allow monitoring of all input and output channels: MODE= XX/XX LTD CE Models STARTING...
Page 166: How To Unlock And Modify Ocm Settings
Service and Maintenance Section 5 - Procedures 5.1-5 How to Unlock and Modify OCM Settings MODE= XX/XX LTD CE Models FUNCTIONS OFF ▲ STARTING ▬▬▬ SCREEN ┼ ANSI/CSA MODE= XX/XX STD Models FUNCTIONS OFF MENU UNLOCK SETUP? ▲ SOFTWARE REVISION ▬▬▬▬...
Page 167: Ocm Pin Voltage Reference
Section 5 - Procedures Service and Maintenance 5.1-6 OCM Pin Voltage Reference All voltages given are with OCM controller at maximum % adjustable settings. All voltages should be tested with key on, engine off and foot switch depressed. All tests should be performed with platform over drive axle, boom fully stowed and on flat level surface. Pin 1 - 12 volt input from wire 4.
Page 168 Service and Maintenance Section 5 - Procedures Pin 10 - Turret rotate right selected. Proportional output on wire 33 to turret rotate right valve 4H-33. 0 volts to 5 volts depending on position of joystick. Threshold= .5 volts. Test between pin 10 and 02 wire while operating turret rotate right. Pin 11 - Telescope in selected.
Page 169 Section 5 - Procedures Service and Maintenance Pin 23 - Reverse drive selected. Proportional output on wire 15 to reverse drive valve 3H-15. 0 volts to 7.5 volts depending on joystick position. Threshold= 1.5 volts. Test between pin 23 and 02 wire while operating reverse drive. Pin 24 - Battery negative.
Page 170 Notes Telescopic Boom Series Models SJ 40T, SJ 45T Page 170 December 2007 143872...
Page 171: Platform Controller Voltage References
Section 5 - Procedures Service and Maintenance 5.1-7 Platform Controller Voltage References Boom/Turret (A1) Controller Boom Up 12 Volts RED (+) POWER 04 RED/YEL Neutral BLK(-) GROUND 02 WHT Position Turret Rotate Left Turret Rotate Right WHT(X) X-SIGNAL 4.2 - 4.8 Pin 28 Volts BLU(Y)
Page 172: Boom
Service and Maintenance Section 5 - Procedures Boom 5.2-1 Cable Carrier Repair The cable carrier can be repaired by simply using a screwdriver. Each crossbar can be snapped off from either side of the chain either by hand or by using the screwdriver as a lever.
Page 173: Check The Wear Pads
Also, check that the appropriate number of shims are installed. 7. If there is damage (such as gouging) to the pad mating surfaces or any other part of the boom structure, contact Skyjack service. General locations of the wear pads...
Page 174: Shimming Wear Pads
Service and Maintenance Section 5 - Procedures Wear pads are located at the end of the main and fly boom sections, and at the base of the extension cylinder assembly. Main boom locations Fly boom locations Platform End Turret End Extension cylinder pad locations 5.2-2 Shimming Wear Pads Fly Boom...
Page 175: Turret
Section 5 - Procedures Service and Maintenance Turret 5.3-3 Turret Rotation Gear Backlash Adjustment 5.3-1 High Pressure Filter Replacement The swing drive motor is located in the engine com- 1. Start engine from base control console. partment. NOTE 2. Inspect filter restriction indicator gauge. (The The adjustment of the backlash must be filter should be operating with the gauge performed on a flat level surface.
Page 176: Change Swing Drive Motor Oil
Service and Maintenance Section 5 - Procedures 5.3-4 Change Swing Drive Motor Oil 5.3-5 Battery Replacement 1. Turn main power disconnect switch to off NOTE position. Oil change must be performed on a flat level surface. Battery Anchor Plate Nuts Brake Fill Rods Battery...
Page 177: Bolt Torque Procedure
Section 5 - Procedures Service and Maintenance 5.3-6 Bolt Torque Procedure 5.3-7 Electronic Tilt Switch Setup Maintaining proper torque is essential to safe aerial Procedure platform operation. Improper bolt torque could result in The following information is supplied for replacement an unsafe operating condition and component damage.
Page 178 Service and Maintenance Section 5 - Procedures Install new switch to mount and connect switch e. The green LED will flash and then the plug to 4 pin connector. red LED will turn on solid for 2 seconds. Results: The switch is verifying the new zero NOTE position.
Page 179: Reprogramming Existing Tilt Switch
Section 5 - Procedures Service and Maintenance Reprogramming Existing Tilt Switch Both LEDs will flash. The set to zero button is located Red LED Light Indicators on this face next to the harness Green LED IMPORTANT Step “c” must completed within a 5 second period or the switch will automatically exit program mode and return...
Page 180: Test And Verify Tilt Circuit
Service and Maintenance Section 5 - Procedures 5.3-8 Check Rotation Bearing for Axial Turn main disconnect switch to “ ” off position. Wear 1. Position the boom so that it is centered Push in “ ” emergency stop buttons. over the front drive and steer axle and is Remove chock or wheel blocks.
Page 181: Deutz Diesel Engine
Section 5 - Procedures Service and Maintenance Deutz Diesel Engine 16. Reinstall bolts to engine tray. Maintaining the engine components is essential to good 17. Start engine from base control console and performance and service life of the aerial platform. allow engine to run for 30 seconds then stop the engine.
Page 182: Replace Fuel Filter
Service and Maintenance Section 5 - Procedures 5.4-2 Replace Fuel Filter 5.4-4 Check Engine Belt 1. Remove bolts from engine tray. The aerial platform will not operate properly with a loose or defective belt. Continuous usage may cause 2. Pull locking pin down and swing the engine component damage.
Page 183: Gm Dual Fuel Engine
Section 5 - Procedures Service and Maintenance GM Dual Fuel Engine Maintaining the engine components is essential to good performance and service life of the aerial platform. 5.5-1 GM Map and IAT Sensor BLK/LT GRN SENSOR GROUND YEL/GRY 5 VOLTS INTAKE AIR TEMPERATURE SIGNAL (IAT) LT GRN/RED 5 VOLTS...
Page 184: Lpg Temperature Sensor
Service and Maintenance Section 5 - Procedures 5.5-2 LPG Temperature Sensor WHITE/RED 5 VOLTS BLK/LT GREEN SENSOR GROUND TEMPERATURE SENSOR RESISTANCE Temperature Sensor Resistance TEMPERATURE TOLERANCE ±10% DEGREES F OHMS 153.7 214.6 255.4 305.5 367.3 444.1 660.6 1008 1582 2554 3284 4259 7357...
Page 185: Throttle Actuator
Section 5 - Procedures Service and Maintenance 5.5-3 Throttle Actuator DBW+ PNK/WHT MOTOR DBW- TAN/ORG TPS1 SIGNAL PPL/LT BLU SENSOR GROUND BLK/LT GRN SIGNAL TPS1 LT BLU/DK BLU 5 VOLTS LT GRN/RED Telescopic Boom Series Models SJ 40T, SJ 45T December 2007 Page 185 143872...
Page 186: Engine Coolant Temperature Sensor
Service and Maintenance Section 5 - Procedures 5.5-4 Engine Coolant Temperature Sensor TAN/WHITE 5 VOLTS BLK/LT GREEN SENSOR GROUND TEMPERATURE SENSOR RESISTANCE Temperature Sensor Resistance TEMPERATURE TOLERANCE ±10%  F OHMS 242.4 231.9 211.6 201.4 181.9 163.1 144.9 127.4 102.4 1,556 78.9 2,689...
Page 187: Ecu Pin Reference Chart
Section 5 - Procedures Service and Maintenance 5.5-5 ECU Pin Reference Chart LOCK TAB Diagnostics Diagnostics Pin # Wire Color Description Pin # Wire Color Description DK GRN/ORN EGO1 Signal DK BLU/YEL Not used DK GRN/WHT EGO2 Signal YEL/DK BLU Not used EMPTY LT GRN/WHT...
Page 188: Fuse Block Layout
Service and Maintenance Section 5 - Procedures 5.5-6 Fuse Block Layout 2002CR 56CR 57ACR POWER FUEL STARTER RELAY PUMP RELAY RELAY EMPTY 5 AMP 20 AMP EMPTY 15 AMP 15 AMP FUEL PUMP IGNITION 10 AMP 15 AMP F13 60A ALT STARTER Telescopic Boom Series Models SJ 40T, SJ 45T...
Page 189: Hydraulic Tank
Section 5 - Procedures Service and Maintenance Hydraulic Tank 5.6-2 Change Hydraulic Oil Maintaining the hydraulic components and hydraulic oil 1. Ensure aerial platform is on a firm level at the proper level are essential to good performance surface and is in stowed position. and service life of the aerial platform.
Page 190: Manifold And Hydraulic Pumps
Service and Maintenance Section 5 - Procedures Manifold and Hydraulic Pumps 6. Stop aerial platform and adjust pressure relief valve 1/4 turn at a time by turning either clockwise to increase pressure or 5.7-1 Hydraulic Brake Pressure counterclockwise to decrease pressure. Adjustment Maintaining accurate hydraulic brake pressure is im- 7.
Page 191: Hydraulic Standby Pressure Adjustment
Section 5 - Procedures Service and Maintenance 5.7-2 Hydraulic Standby Pressure 6. Loosen set screw half a turn counterclockwise. Adjustment 7. Adjust system pump pressure by turning 1. Locate GP Port on main manifold and adjusting stem either clockwise to increase remove the cap.
Page 192: Hydraulic High Pressure Adjustment
Service and Maintenance Section 5 - Procedures 5.7-3 Hydraulic High Pressure Adjustment 5. Locate set screw and adjusting stem on System Pump. 1. Locate GP Port on main manifold and remove the cap. Hose Pressure Gauge GP Port Main Manifold Set Screw Adjusting Stem System Pump...
Page 193: Hydraulic System Relief Valve Adjustment
Section 5 - Procedures Service and Maintenance 5.7-4 Hydraulic System Relief Valve 6. Locate system relief valve (RV8). Adjustment 1. To adjust the system relief valve (RV8), you System Relief are required to temporarily adjust the high Valve pressure setting on the system pump to 3000 psi.
Page 194: Test Charge Pump Pressure On Drive Pump
Service and Maintenance Section 5 - Procedures 5.7-5 Test Charge Pump Pressure on Drive 5.7-6 Test Forward Drive Pressure on Pump Drive Pump NOTE 1. Locate test port beside charge pressure filter. Make sure charge pump pressure test is completed first. 1.
Page 195: Test Reverse Drive Pressure On Drive Pump
Section 5 - Procedures Service and Maintenance 5.7-7 Test Reverse Drive Pressure on Drive Axles Pump 5.8-1 Change Oil in Rear Axle NOTE Make sure charge pump pressure test is 1. Ensure aerial platform is on a firm level completed first. surface and is in stowed position.
Page 196: Check Oil Level In Torque Hub
Service and Maintenance Section 5 - Procedures 5.8-4 Check Oil Level in Axle Gearbox 5. Remove drain plug to allow oil to drain into container. 1. Remove plug 1 from gear box. 2. Check oil level. Oil level should be even with the bottom of plug hole 1.
Page 197: Bleeding Oscillating Axle Cylinders
Section 5 - Procedures Service and Maintenance 5.8-6 Bleeding Oscillating Axle Cylinders 5.8-7 Pin Brake Adjustments If the axle oscillation system is not operating properly, the stability of the aerial platform is compromised and it may tip over. Items you will need before starting: •...
Page 198 Service and Maintenance Section 5 - Procedures 7. Release the pressure from the cylinder and check that the rod returns and stops in a 4. Tighten the Jam nut. Repeat this procedure position where it projects out from the cylinder for the other side.
Page 199: Brake Inspection
Section 5 - Procedures Service and Maintenance 5.8-7 Brake Inspection 1. Remove the oil level plug from one of the braking axle arms, as shown below. 2. Insert a 4.5 mm feeler gauge into the drain port. 3. Use the gauge to check the gap between the disks (A).
Page 200: Grease Points
Model Race Gear Mobil Mobillux EP2 Mobil Mobiltac C Texaco Multifax EP2 Texaco Crater 2X or 3X SJ40T / 45T Sun Prestige 742 EP Sun Gear Compound 407 SJ61T / 66T Shell Alvania EP2 Shell Cardium EP Exxon Ronex WB...
Page 201: Grease Cylinder Brackets
(Refer to the Table below) *GREASE Model Recommended Grease Type Mobil Mobillux EP2 Texaco Multifax EP2 SJ40T / 45T Sun Prestige 742 EP Shell Alvania EP2 Exxon Ronex WB Refer to Service and Maintenance manual for greasing frequency and procedures.
Page 202: Grease Drive Axle
(Refer to the Table below) *GREASE Model Recommended Grease Type Mobil Mobillux EP2 Texaco Multifax EP2 SJ40T / 45T Sun Prestige 742 EP SJ61T / 66T Shell Alvania EP2 Exxon Ronex WB Refer to Service and Maintenance manual for greasing frequency and procedures.
Page 203: Options
5.10-1 Load Sensing System - CE The Skyjack boom platform overload sensing system is based on load cell or electronic scale technology. The deck steel structure is isolated from the aerial platform. The load cell is permanently bolted between the deck and the rotary actuator mount.
Page 204 Service and Maintenance Section 5 - Procedures Verify Proper Operation of the Load Sensing System Overload Status Chart Indicator Load Cell Audible Aerial Platform Weight Light LED Display Alarm Functions Error - OFF Error - OFF Alarm - OFF Alarm - ON (red) Error - OFF Error - OFF Zero/Tare - ON (orange)
Page 205 Section 5 - Procedures Service and Maintenance Calibration of Load Sensing System (with “Teach In” Handset) WARNING Do not interrupt system power and rest your hand or foot on platform during this procedure. 1. Ensure aerial platform is on firm level ground. 2.
Page 206 Notes Telescopic Boom Series Models SJ 40T, SJ 45T Page 206 December 2007 143872...
Page 208 Reliable lift solutions by people who care. www.skyjack.com...

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