JLG 30e Service & Maintenance
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JLG 30e Service & Maintenance

JLG 30e Service & Maintenance

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SERVICE & MAINTENANCE
Models
30e
35e
n35e
40e
n40e
45e
3120743
October 1, 2001
WWW.JLG.COM
CORPORATE OFFICE
JLG INDUSTRIES, INC.
1 JLG Drive
McConnellsburg, PA.
17233-9533
USA
Telephone: (717) 485-5161
Fax: (717) 485-6417

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  • Page 1 SERVICE & MAINTENANCE Models n35e n40e 3120743 October 1, 2001 WWW.JLG.COM CORPORATE OFFICE JLG INDUSTRIES, INC. 1 JLG Drive McConnellsburg, PA. 17233-9533 Telephone: (717) 485-5161 Fax: (717) 485-6417...
  • Page 2 England Fax: (49) 421 693 5035 Fax: (61) 2 65 810122 Phone: (44) 870 200 7700 Fax: (44) 870 200 7711 JLG Latino Americana Ltda. JLG Europe B.V. JLG Industries (Norge AS) JLG Polska Rua Eng. Carlos Stevenson, Jupiterstraat 234 Sofeimyrveien 12 UI.

  • Page 3: Bhydraulic System Safety

    Relieve system pressure by cycling the applicable control several times with the engine stopped and ignition on, to direct any line pressure back into the reservoir. Pressure 3120743 – JLG Lift –...
  • Page 4 REVISON LOG March, 1989 - Original Issue October, 1994 - Revised August, 1997 - Revised January, 1999 - Revised Cvr, Intro., - and Pgs. May 1, 2000 -Revised May 1, 2001 -Revised October 1, 2001 -Revised – JLG Lift – 3120743...

  • Page 5: Table Of Contents

    HYDRAULIC CIRCUIT CHECKS........... .3-1 3120743 – JLG Lift –...
  • Page 6 Upright Leveling..............2-48 – JLG Lift –...
  • Page 7 Electrical System - Troubleshooting ..........3-15 3120743 – JLG Lift –...
  • Page 8 TABLE OF CONTENTS (Continued) This page left intentionally blank. – JLG Lift – 3120743...

  • Page 9: Section 1 - Specifications

    Tires - ST225 75R15, Load Range D, 8 Ply Rating, 80 psi (5.5 kg/cm 45 electric - 2.6 mph (4.2 kph). Tires - ST225 75R15, Load Range D, 8 Ply Rating, Foam Filled. (Optional) Tires - 35/40 electric. (March of 1996 to Present) 3120743 – JLG Lift –...
  • Page 10 - 17 ft.,4 in. (5.28 m.). 35/n35 electric - Lift Up - 49 - 59 seconds. 45 electric - 18 ft.,8.0 in. (5.69 m.). 35/n35 electric - Lift Down - 30 - 40 seconds. – JLG Lift – 3120743...

  • Page 11: Torque Specifications

    Torque Chart, Figure 1-1, to determine proper torque value. 35/n35 electric - 6 ft., 7.25 in. (2.01 m.). 40/n40 electric - 6 ft., 7.25 in. (2.01 m.). 45 electric - 6 ft., 7.25 in. (2.01 m.). 3120743 – JLG Lift –...

  • Page 12: Lubrication

    Hydro-Air Valve 4640843. Upper Lift Down Relief - 600 psi (41.37 bar). NOTE: Aside from JLG recommendations, it is not advisable to mix oils of different brands or types, as they may Lower Lift Down Relief - 600 psi (41.37 bar).

  • Page 13: Major Component Weights

    21.25 1.50 BATTERIES, FILLED TIRES, PLATFORM) DO NOT MODIFY UNIT IN (76.2) (539.7) (38.1) ANY WAY TO AFFECT STABILITY. Lower Lift Cylinder 3.50 23.1875 2.00 (88.9) (589.0) (50.8) Telescope Cylinder 2.00 1.25 (50.8) (2006.6) (31.8) 3120743 – JLG Lift –...
  • Page 14 In addition, the serial number is stamped on top of the end of the upper boom at the platform, and lower boom at the upright. – JLG Lift – 3120743...
  • Page 15 SECTION 1 - SPECIFICATIONS Figure 1-1. Torque Chart 3120743 – JLG Lift –...

  • Page 16: Lubrication Chart - 30 Electric. (Sheet 1 Of 6)

    SECTION 1 - SPECIFICATIONS Figure 1-2. Lubrication Chart - 30 electric. (Sheet 1 of 6) – JLG Lift – 3120743...
  • Page 17 SECTION 1 - SPECIFICATIONS Figure 1-3. Lubrication Chart - 30 electric. 3120743 – JLG Lift –...

  • Page 18: Lubrication Chart - 35/N35 Electric. (Sheet 3 Of 6)

    SECTION 1 - SPECIFICATIONS Figure 1-4. Lubrication Chart - 35/n35 electric. (Sheet 3 of 6). 1-10 – JLG Lift – 3120743...
  • Page 19 SECTION 1 - SPECIFICATIONS Figure 1-5. Lubrication Chart - 35/n35 electric. (Sheet 4 of 6). 3120743 – JLG Lift – 1-11...

  • Page 20: Lubrication Chart - 40/N40/45 Electric. (Sheet 5 Of 6)

    SECTION 1 - SPECIFICATIONS Figure 1-6. Lubrication Chart - 40/n40/45 electric. (Sheet 5 of 6). 1-12 – JLG Lift – 3120743...
  • Page 21 SECTION 1 - SPECIFICATIONS Figure 1-7. Lubrication Chart - 40/n40/45 electric. (Sheet 6 of 6). 3120743 – JLG Lift – 1-13...

  • Page 22: Serial Number Locations - 30 Electric. (Sheet 1 Of 3)

    SECTION 1 - SPECIFICATIONS Figure 1-8. Serial Number Locations - 30 electric. (Sheet 1 of 3) 1-14 – JLG Lift – 3120743...

  • Page 23: Serial Number Locations - 35/N35 Electric. (Sheet 2 Of 3)

    SECTION 1 - SPECIFICATIONS Figure 1-9. Serial Number Locations - 35/n35 electric. (Sheet 2 of 3). 3120743 – JLG Lift – 1-15...

  • Page 24: Serial Number Locations - 40/N40/45 Electric. (Sheet 3 Of 3)

    SECTION 1 - SPECIFICATIONS Figure 1-10. Serial Number Locations - 40/n40/45 electric. (Sheet 3 of 3). 1-16 – JLG Lift – 3120743...

  • Page 25: Section 2. Procedures

    2. At any time when hydraulic oil lines are discon- nected, clear adjacent areas as well as the openings 3120743 – JLG Lift –...
  • Page 26 2. Unless specific torque requirements are given within the text, standard torque values should be used on heat treated bolts, studs and steel nuts, in accor- dance with recommended shop practices (See Fig- ure 1-1). – JLG Lift – 3120743...

  • Page 27: Lubrication Information

    Avoid mixing petroleum and syn- tion. Every precaution must be taken to keep thetic base oils. JLG Industries recommends chang- hydraulic oil clean, including reserve oil in storage. ing the hydraulic oil every two years.

  • Page 28: Cylinders - Theory Of Operation

    Flow control valves in the lift circuits provide for control of the rate of flow when the oil is flowing out of the cap ends of the cylinders (the load is being lowered). An adjusting – JLG Lift – 3120743...

  • Page 29: Motor Controller

    If a direction switch is selected during pump drive, a procedure fault will occur when the function switch is no longer selected, remaining until both directions and the function switch are no longer selected. 3120743 – JLG Lift –...
  • Page 30 5 Flashes - Motor Neither Low Nor High. (Open Circuit) NOTE: Refer to Figure 2-1, Troubleshooting Flow Charts, for This includes direction or pump/traction contac- specific troubleshooting information. tor open circuit, MOSFET open circuit and hard- ware fail-safe trip. – JLG Lift – 3120743...
  • Page 31 At key ON, the LED should illuminate steadily. If switch) the LED illuminates and remains steady, but no - Illegal start up sequence, 2 directions selected, drive can be selected, contact JLG Service Depart- pump selected. ment. - Drive inhibited. - Flashes until fault is cleared.
  • Page 32 - Drive inhibited. Figure 2-1. Sevcon Controller Troubleshooting Flow 7. 6 FLASHES - Drive Hand Controller Fault. Charts. (Sheet 2 of 4). - 3.5-0V Input: Voltage <2.5V on power up. - Voltage >4.5V in drive. – JLG Lift – 3120743...
  • Page 33 - Recycle to neutral to clear flashes. Figure 2-1. Sevcon Controller Troubleshooting Flow Charts. (Sheet 3 of 4). 9. 8 FLASHES - Thermal Cutback, Controller. - Heat sink temperature > 80 degrees C (176 degrees F). 3120743 – JLG Lift –...
  • Page 34 11. 11 FLASHES - Tachometer out of calibrate. - Pin voltage @ MOS90 above 9 volts or below 6 volts when in neutral. Figure 2-1. Sevcon Controller Troubleshooting Flow Charts. (Sheet 4 of 4). 2-10 – JLG Lift – 3120743...

  • Page 35: Wear Pads

    Loosen jam nut on adjustment bolt, turn bolt CW until wear pad is snug to adjacent surface. b. b.After adjustments have been made, tighten the jam nuts on wear pad bolts. Figure 2-2. Location and Thickness of Wear Pads. 3120743 – JLG Lift – 2-11...

  • Page 36: Boom Maintenance

    HYDRAULIC LINES AND PORTS SHOULD BE CAPPED IMMEDI- ATELY AFTER DISCONNECTING LINES TO AVOID ENTRY OF CONTAMINANTS INTO SYSTEM. b. Using a suitable lifting equipment, adequately support boom link weight along entire length. 2-12 – JLG Lift – 3120743...
  • Page 37 8. Install the platform to the boom and link assembly. 9. Connect all wiring to control console. 10. Using all safety precautions, operate machine sys- tems and extend and retract boom for four or five cycles. 3120743 – JLG Lift – 2-13...
  • Page 38 #1. Using a suitable brass drift and hammer, remove pin #1 from the base boom. e. Remove hardware securing the master cylinder pin #2. Using a suitable brass drift and hammer, remove pin #2 from the base boom. 2-14 – JLG Lift – 3120743...
  • Page 39 4. Using a suitable lifting device, remove fly boom from boom section. boom section. 5. Remove hydraulic lines and electrical cables from powertrack. 6. Remove hardware securing powertrack to the base boom section. Remove powertrack. 3120743 – JLG Lift – 2-15...
  • Page 40 10. Shut down machine systems and check for leakage. 10. Secure the sling and lifting device at the telescope cylinder’s approximate center of gravity, and lift the cylinder to the aft end of the boom assembly. 2-16 – JLG Lift – 3120743...

  • Page 41: Cylinder Checking Procedures

    OPERATE ALL FUNCTIONS FROM GROUND CONTROL STATION ONLY. OPERATE ALL FUNCTIONS FROM GROUND CONTROL STATION 1. Using all applicable safety precautions, activate ONLY. hydraulic system. 1. Using all applicable safety precautions, activate hydraulic system. 3120743 – JLG Lift – 2-17...
  • Page 42 7. Remove boom prop/overhead crane, activate hydraulic system and run cylinder through complete cycle to check for leaks and operation. 2-18 – JLG Lift – 3120743...

  • Page 43: Boom Prop Configurations - 30 Electric. (Sheet 1 Of 3)

    SECTION 2 - PROCEDURES Figure 2-11. Boom Prop Configurations - 30 electric. (Sheet 1 of 3) 3120743 – JLG Lift – 2-19...
  • Page 44 SECTION 2 - PROCEDURES Figure 2-11. Boom Prop Configurations - 35/n35 electric. (Sheet 2 of 3) 2-20 – JLG Lift – 3120743...
  • Page 45 SECTION 2 - PROCEDURES Figure 2-11. Boom Prop Configurations - 40/n40/45 electric. (Sheet 3 of 3) 3120743 – JLG Lift – 2-21...

  • Page 46: Cylinder Repair

    5. Using a suitable chain wrench, loosen the cylinder head retainer, if applicable, and/or cylinder head gland, and remove from cylinder barrel. Figure 2-13. Removal of Set Screws. NOTE: Steer cylinder has cylinder head retainer at both ends. Remove both retainers. 2-22 – JLG Lift – 3120743...

  • Page 47: Removal Of Seals And O-Rings

    Repair as necessary. Assembly. NOTE: Prior to cylinder assembly, ensure that the proper cylinder seal kit is used. See your JLG Parts Manual. Apply a light film of hydraulic oil to all components Figure 2-15. Removal of Piston Seals.

  • Page 48: Piston Seal Kit Installation

    Table 2-1.). 6. Using suitable protection, clamp the cylinder rod in NOTE: Step (12) applies to 35/n35/40/n40/45 electric Tele- a vise or similar holding fixture as close to the piston scope Cylinder. as possible. 2-24 – JLG Lift – 3120743...
  • Page 49 THE MACHINE, EXTREME CARE SHOULD BE USED TO INSURE THAT THE OUTER END OF THE ROD IS SUPPORTED. USE EITHER A TRAVELING OVERHEAD HOIST, FORKLIFT, OR OTHER MEANS TO SUPPORT THE OVERHANGING WEIGHT OF THE EXTENDING ROD. 3120743 – JLG Lift – 2-25...

  • Page 50: Lift Cylinder Assembly

    SECTION 2 - PROCEDURES Figure 2-23. Lift Cylinder Assembly. 2-26 – JLG Lift – 3120743...
  • Page 51 (68 Nm) (12 Nm) Slave Cylinder 80 ft. lbs. 100 in. lbs. (From 12/23/94 (109 Nm) (12 Nm) to present) Master Cylinder (To 1/95) 50 ft. lbs. 100 in. lbs. (68 Nm) (12 Nm) 3120743 – JLG Lift – 2-27...

  • Page 52: Cylinder Removal And Installation

    #1 through the aligned holes. Secure the pin in place with pin retaining hardware. 5. Cycle cylinder completely to check for proper func- tioning. Place boom in stowed position. Check hydraulic fluid level and adjust accordingly. 2-28 – JLG Lift – 3120743...

  • Page 53: Mid Boom Lift Cylinder Removal

    5. Remove boom prop and overhead crane. Take the suitable work area. lift cylinder through one complete cycle to assure correct functioning. Place boom in stowed position. Check hydraulic fluid and adjust accordingly. Figure 2-25. Mid Boom Lift Cylinder Removal. 3120743 – JLG Lift – 2-29...

  • Page 54: Lower Boom Lift Cylinder Removal

    #6 to the boom. Using an appropriate brass Check hydraulic fluid and adjust accordingly. drift, drive out the cylinder barrel pin #6. 6. Carefully remove cylinder from boom. Place in a suitable work area. Figure 2-26. Lower Boom Lift Cylinder Removal. 2-30 – JLG Lift – 3120743...

  • Page 55: Upper Telescope Cylinder Removal

    9. Using all applicable safety precautions, operate the boom functions. Check for correct operation and hydraulic leaks. Secure as necessary. 10. Check fluid level of hydraulic tank and add as neces- sary. 3120743 – JLG Lift – 2-31...

  • Page 56: Tilt Indicator Switch Leveling Procedure. (If Equipped.)

    4. Adjust Lower Lift Relief to 725 psi (49.99 bar). Swing Relief. 1. With pressure gauge at “G” port on 4640725 valve, activate and bottom out Swing function in either direction. 2. Adjust Swing Relief to 1000 psi (68.95 bar). 2-32 – JLG Lift – 3120743...
  • Page 57 1. With pressure gauge at “G” port on 4640843 valve, activate and bottom out Telescope In. activate and bottom out Platform Level Up. 2. Adjust Telescope In Relief to 2150 psi (148.25 bar). 2. Adjust Platform Level Up Relief to 2500 (172.37 bar). 3120743 – JLG Lift – 2-33...
  • Page 58 3. Shut down hydraulic system and remove pressure gauge. 1. With pressure gauge at “G” port on 4640797 valve, activate and bottom out Platform Level Down. 2. Adjust Platform Level Down Relief to 1200 psi (82.74 bar). 2-34 – JLG Lift – 3120743...

  • Page 59: Pressure Setting Procedure - 30 Electric. (Sheet 1 Of 3)

    SECTION 2 - PROCEDURES Figure 2-29. Pressure Setting Procedure - 30 electric. (Sheet 1 of 3) 3120743 – JLG Lift – 2-35...
  • Page 60 SECTION 2 - PROCEDURES Figure 2-29. Pressure Setting Procedure - 35/n35 electric. (Sheet 2 of 3) 2-36 – JLG Lift – 3120743...
  • Page 61 SECTION 2 - PROCEDURES Figure 2-29. Pressure Setting Procedure - 40/n40/45 electric. (Sheet 3 of 3) 3120743 – JLG Lift – 2-37...

  • Page 62: Swing Bearing

    Turntable Bearing Mounting Bolt Condition Check. NOTE: This check is designed to replace the existing bear- ing bolt torque checks on JLG Lifts in service. This check must be performed after the first 50 hours of machine operation and every 600 hours of machine operation thereafter.

  • Page 63: Swing Bearing Tolerance Boom Placement - 30/N30/N35 Electric. (Sheet 1 Of 2)

    SECTION 2 - PROCEDURES Figure 2-31. Swing Bearing Tolerance Boom Placement - 30/n30/n35 electric. (Sheet 1 of 2) 3120743 – JLG Lift – 2-39...

  • Page 64: Swing Bearing Tolerance Measuring Point

    Upper Boom fully elevated and the Lower Boom horizontal, (See Figure 2-31 b.) using a magnetic base dial indicator, measure and record the distance between the swing bearing and turn- table (See Figure 2-32). 2-40 – JLG Lift – 3120743...
  • Page 65 This will aid in aligning the bear- JLG INDUSTRIES RECOMMENDS THAT ALL REMOVED GRADE 8 ing upon installation. Remove bolts, nuts and BEARING NUTS AND BOLTS BE DISCARDED AND REPLACED washers which attach the turntable to the bear- WITH NEW NUTS AND BOLTS.

  • Page 66: Swing Bearing Torquing Sequence

    2. Loctite - 240 ft. lbs. (326 Nm). 6. Recheck end play. Checking Worm Gear End Play. NOTE: JLG Industries requires that a annual inspection be performed on the worm gear end play. 1. Using a dial indicator, measure end play of worm gear, by applying side to side movement by hand to platform.
  • Page 67 7. Remove the retaining ring (9) from the spindle (1) be replaced. and discard. 8. Remove thrust washer (8) from the spindle (1). 9. The spindle (1) may now be pressed out of the housing (7). 3120743 – JLG Lift – 2-43...

  • Page 68: Drive Hub Assembly - 30/35/N35/40/N40/45

    SECTION 2 - PROCEDURES Figure 2-36. Drive Hub Assembly - 30/35/n35/40/n40/45. 2-44 – JLG Lift – 3120743...

  • Page 69: Drive Brake Assembly. (See Figure 2-35.)

    (7), usually 90 degrees to NOTE: It is essential when replacing plates (5, 6, 7) that one another, locate the four counterbore holes in spacers (8) are also replaced. housing (7), marked in step (3) and install four 3120743 – JLG Lift – 2-45...
  • Page 70 12. The brake can be adjusted for friction plate wear by towards mounting plate (4). removing spacers (8) and machining them to main- tain the correct air gap. Length of all three spacers should be within 0.001 in. (0.025 mm). 2-46 – JLG Lift – 3120743...

  • Page 71: Drive Brake Assembly - 30/35/N35/40/N40/45

    SECTION 2 - PROCEDURES Figure 2-37. Drive Brake Assembly - 30/35/n35/40/n40/45. 3120743 – JLG Lift – 2-47...

  • Page 72: Mid And Lower Lift Cylinder Bleeding Procedure. (40/N40/45 Electric)

    8. To test, cycle the lower lift function 3-4 times to see if Figure 2-39. Synchronizing Valve. both cylinders stop at the same time when fully extended. Figure 2-38. Port "P" Location. Figure 2-40. Upright Leveling. 2-48 – JLG Lift – 3120743...

  • Page 73: Free Wheeling Procedure

    Switch adjustment Refer to manual 3120351. Pulse Width Modulation (PWM) Fine tune adjustment Figure 2-41. Drive Brake Release. Refer to manual 3120351. 3120743 – JLG Lift – 2-49...

  • Page 74: Axle Drain Plates

    NOTE: This machine requires periodic safety and mainte- these drains, trapping water inside the axle box. Periodi- nance inspections by a JLG Dealer. A decal located cally check and open drains with compressed air, or on the turntable affords a place to record (stamp) remove and clean them if necessary.
  • Page 75 Batteries Wheel and Tire Assemblies 8, 9, 15 Drive Motors 1, 5, 6 Drive Torque Hubs * 1, 5, 6 Drive Brakes 1, 5, 6 Hydraulic Pump/Motor Steer Components 4, 6 Front Axle Pin 3120743 – JLG Lift – 2-51...
  • Page 76 Table 2-3.PREVENTIVE MAINTENANCE AND INSPECTION SCHEDULE Hydraulic Oil Tank * Breather - Hydraulic Tank 6, 14 Hydraulic Hoses and Tubing Placards and Decals 1, 2 Tilt Alarm Switch Shields Wheel Bearings * Swing Bearing/Worn Gear 9, 12 2-52 – JLG Lift – 3120743...

  • Page 77: Section 3 - Troubleshooting

    For aid in troubleshooting, refer to the Illustrated Parts Manual for hydraulic diagrams of the various circuits. 3120743 – JLG Lift –...
  • Page 78 Repair or replace valve. No electric to control valve. See proper wiring diagram. Run systems test Slave cylinder not functioning properly. Repair or replace pump. Main proportional valve in-operative Run systems test Incorrect personality settings check settings – JLG Lift – 3120743...
  • Page 79 Slave cylinder not functioning properly. Repair or replace cylinder. Electrical failure. See proper wiring diagram. Run systems test Orifice plugged. Clean orifice. Platform will not adjust “down” to level. See: Platform will not adjust “up” to level. 3120743 – JLG Lift –...
  • Page 80 Valve spool scored. necessary. Excessive back pressure caused by restricted Remove line and clear obstruction or replace return line to reservoir. line as necessary. Remove valve and repair or replace as Damaged valve seals. necessary. – JLG Lift – 3120743...
  • Page 81 Bypass valve (dump) not functioning. Repair or replace valve. Boom will not lower. See: Boom will not raise. Pressure relief valve not functioning properly. Re-adjust or replace valve. Holding valve not functioning properly. Re-adjust or replace valve. 3120743 – JLG Lift –...
  • Page 82 Repair or replace control valve. Restricted or broken hydraulic line or fitting. Clean, repair, or replace line or fitting. Pressure setting incorrect. Check pressure/ re-adjust as nessary. Telescope cylinder not functioning properly. Repair or replace cylinder. – JLG Lift – 3120743...
  • Page 83 Repair or replace valve. Foreign object(s) wedged between swing motor Remove object(s), check for damage and repair pinion and swing gear. or replace component(s) as required. Swing joystick not functioning properly. Repair or replace swing control switch. 3120743 – JLG Lift –...
  • Page 84 Swing motor not functioning properly. Repair or replace swing control switch. Worn or broken teeth on swing gear or swing Replace gear(s) as required. motor pinion. Restrictor valve plugged. Clean or replace restrictor valve. – JLG Lift – 3120743...
  • Page 85 Repair or replace valve as necessary. Is the main relief valve, of the brake / steer valve set Check settings. too low? Is the pressure filter, of the brake / steer valve Check filter. clogged? 3120743 – JLG Lift –...
  • Page 86 Machine will not travel in reverse. Motor controller REVERSE contactor defective. Repair or replace contactor. Run system test. See: Machine will not travel forward. Drive system very jerky. Sevcon controller defective. Check flash code 3-10 – JLG Lift – 3120743...
  • Page 87 Repair or replace valve. Control switch not functioning properly. Replace switch. Relief valve improperly set or not functioning Reset, repair or repolace valves as required. properly. Steer cylinder not functioning properly. Repair or replace cylinder. 3120743 – JLG Lift – 3-11...
  • Page 88 Take pressure reading at steer valve and adjust as necessary. Bent cylinder rod. Repair or replace cylinder. C rossover relief valve sticking. Repair crossover relief valve. Damaged tie rod. Replace tie rod. Cylinder packing defective. Repair or replace cylinder. 3-12 – JLG Lift – 3120743...
  • Page 89 Repair or replace line. Pump not delivering oil. Restricted suction line. Clean, repair, or replace line. Air entering system through broken line or fitting. Repair or replace line or fitting. Defective motor/pump. Repair or replace motor. 3120743 – JLG Lift – 3-13...
  • Page 90 Drain system and replace with recommended oil. (Refer to Hydraulic Oils.) System(s) operate erratically. Sticking or binding valve spools, pistons. Clean, repair, or replace components as required. Hydraulic oil not at operating temperature. Allow oil sufficient time to warm up. 3-14 – JLG Lift – 3120743...
  • Page 91 Charge or replace batteries as necessary. Motor controller contactors not functioning prop- Repair or replace contactor. erly. Motor/pump not functioning properly. Repair or replace motor/pump. Motor controller malfunctioning. See REMEDY column. Refer to Section 8 for malfunction codes. 3120743 – JLG Lift – 3-15...
  • Page 92 SECTION 3 - TROUBLESHOOTING Figure 3-1. Electrical Schematic 30 electric. (Sheet 1 of 4) 3-16 – JLG Lift – 3120743...
  • Page 93 SECTION 3 - TROUBLESHOOTING Figure 3-1. Electrical Schematic 30 electric. (Sheet 2 of 4) 3120743 – JLG Lift – 3-17...
  • Page 94 SECTION 3 - TROUBLESHOOTING Figure 3-1. Electrical Schematic 30 electric. (Sheet 3 of 4) 3-18 – JLG Lift – 3120743...
  • Page 95 SECTION 3 - TROUBLESHOOTING Figure 3-1. Electrical Schematic 30 electric. (Sheet 4 of 4) 3120743 – JLG Lift – 3-19...
  • Page 96 SECTION 3 - TROUBLESHOOTING Figure 3-2. Electrical Schematic 35/40/45 electric. (Sheet 1 of 4) 3-20 – JLG Lift – 3120743...
  • Page 97 SECTION 3 - TROUBLESHOOTING Figure 3-2. Electrical Schematic. 35/40/45 electric. (Sheet 2 of 4) 3120743 – JLG Lift – 3-21...
  • Page 98 SECTION 3 - TROUBLESHOOTING Figure 3-2. Electrical Schematic. 35/40/45 electric. (Sheet 3 of 4) 3-22 – JLG Lift – 3120743...
  • Page 99 SECTION 3 - TROUBLESHOOTING Figure 3-3. Electrical Schematic. 35/40/45 electric. (Sheet 4 of 4) 3120743 – JLG Lift – 3-23...
  • Page 100 SECTION 3 - TROUBLESHOOTING Figure 3-4. Hydraulic Diagram - 30 electric. 3-24 – JLG Lift – 3120743...
  • Page 101 SECTION 3 - TROUBLESHOOTING Figure 3-5. Hydraulic Diagram - 35 electric 3120743 – JLG Lift – 3-25...
  • Page 102 SECTION 3 - TROUBLESHOOTING Figure 3-6. Hydraulic Diagram - 40/45 electric. 3-26 – JLG Lift – 3120743...
  • Page 104 England Fax: (49) 421 693 5035 Fax: (61) 2 65 810122 Phone: (44) 870 200 7700 Fax: (44) 870 200 7711 JLG Latino Americana Ltda. JLG Europe B.V. JLG Industries (Norge AS) JLG Polska Rua Eng. Carlos Stevenson, Jupiterstraat 234 Sofeimyrveien 12 UI.

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