JLG 340AJ Boom Lift Parts Manual

Name: JLG 340AJ Boom Lift Parts Manual
Brand: MidWestTech
SKU: 3121739
Price: 69.87 USD
Availability: InStock

600 pages · Publication 3121739

$69.87

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Models: 340AJ
Serial coverage: 0300200802-0300272222, Exclude Serial Number Range: 0300272191-0300272192
Manual type: Parts Manual
Pages: 600
Publication: 3121739
Condition: Brand new

JLG 340AJ Boom Lift Parts Manual, publication 3121739

What's inside

From the manual's own table of contents: 87 sections, 201 entries. See sample pages (PDF, 651 KB)

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General53 topics

SECTION 1 - FRAME
FIGURE 1-1. STEERING INSTALLATION
FIGURE 1-2. OSCILLATING AXLE INSTALLATION
FIGURE 1-3. DRIVE VALVES INSTALLATION
FIGURE 1-4. FLOW DIVIDER VALVE ASSEMBLY
FIGURE 1-5. DRIVE INSTALLATION
FIGURE 1-6. DRIVE MOTOR ASSEMBLY
FIGURE 1-7. DRIVE HUB/BRAKE ASSEMBLY
FIGURE 1-8. TIRE AND WHEEL INSTALLATION - 7X18 SOLID CUSHION
FIGURE 1-9. TIRE AND WHEEL INSTALLATION - 7X18 SOLID CUSHION NON-MARKING
FIGURE 1-10. TIRE AND WHEEL INSTALLATION - 9X20 FOAM-FILLED
FIGURE 1-11. TIRE AND WHEEL INSTALLATION - 9X20 FOAM-FILLED NON-MARKING
FIGURE 1-12. TIRE AND WHEEL INSTALLATION - 9X20 PNEUMATIC
FIGURE 1-13. TIRE AND WHEEL INSTALLATION - 9X20 PNEUMATIC WITH TIRE SEALANT
FIGURE 1-14. TIRE AND WHEEL INSTALLATION - 9X20 PNEUMATIC NON-MARKING
FIGURE 1-15. TIRE AND WHEEL INSTALLATION - 9X20 PNEUMATIC NON-MARKING WITH TIRE SEALANT
FIGURE 1-16. TIRE AND WHEEL INSTALLATION - 33 X 12LL500 TURF/SAND PNEUMATIC
FIGURE 1-17. TIRE AND WHEEL INSTALLATION - 33 X 12LL500 TURF/SAND FOAM FILLED
FIGURE 1-18. FRAME SHIELDS INSTALLATION
SECTION 2 - TURNTABLE
FIGURE 2-1. CONTROL VALVE AND CHARGE FILTER INSTALLATION - TURNTABLE
FIGURE 2-2. MAIN CONTROL VALVE ASSEMBLY
FIGURE 2-3. SWING DRIVE INSTALLATION (DOHI)
FIGURE 2-4. SWING DRIVE INSTALLATION (JING WEI)
FIGURE 2-5. SWING MOTOR ASSEMBLY
FIGURE 2-6. SWING BEARING ASSEMBLY
FIGURE 2-7. TANK INSTALLATION (DIESEL MACHINES)
FIGURE 2-8. TANK INSTALLATION (GAS MACHINES)
FIGURE 2-9. HYDRAULIC TANK ASSEMBLY
FIGURE 2-10. FUEL TANK ASSEMBLY (DIESEL MACHINES)
FIGURE 2-13. KIT, LOCKABLE FUEL CAP (DIESEL MACHINES ONLY) (OPTIONAL)
FIGURE 2-14. LP TANK ASSEMBLY (GAS MACHINES ONLY)
FIGURE 2-15. ELECTRICAL COMPONENTS INSTALLATION (ALL SPECS EXCEPT CE)
FIGURE 2-16. ELECTRICAL COMPONENTS INSTALLATION (CE SPEC)
FIGURE 2-17. BATTERY INSTALLATION
FIGURE 2-18. STROBE LIGHT INSTALLATION (AMBER) (OPTIONAL)
FIGURE 2-25. TURNTABLE FLOODLIGHT INST ALLATION (OPTIONAL)
FIGURE 2-26. HEAD AND TAIL LIGHT INSTALLATION (OPTIONAL)
FIGURE 2-27. GROUND CONTROL ASSEMBLY (ALL SPECS EXCEPT CE)
FIGURE 2-28. GROUND CONTROL ASSEMBLY (CE SPEC)
FIGURE 2-29. KEY SWITCH INSTALLATION
FIGURE 2-30. HOODS INSTALLATION
FIGURE 2-31. ENGINE SIDE HOOD ASSEMBLY
FIGURE 2-32. TANK SIDE HOOD ASSEMBLY
FIGURE 2-33. KUBOTA ENGINE HOOD COMPONENTS (WITHOUT ARCTIC PACKAGE)
FIGURE 2-34. KUBOTA ENGINE WITH 4000W GENERATOR HOOD COMPONENTS (WITHOUT ARCTIC PACKAGE)
FIGURE 2-35. KUBOTA ENGINE HOOD COMPONENTS (WITH ARCTIC PACKAGE)
FIGURE 2-36. KUBOTA ENGINE WITH 4000W GENERATOR HOOD COMPONENTS (WITH ARCTIC PACKAGE)
FIGURE 2-37. GM ENGINE HOOD COMPONENTS (WITHOUT ARCTIC PACKAGE)
FIGURE 2-38. GM ENGINE HOOD COMPONENTS (WITH ARCTIC PACKAGE)
SECTION 3 - ENGINE
FIGURE 3-1. GM ENGINE INSTALLATION (WITHOUT ARCTIC PACKAGE)
FIGURE 3-2. GM ENGINE INSTALLATION (WITH ARCTIC PACKAGE)

FIGURE 3-3. GM ENGINE AND PUMP SUB-ASSEMBLY

FIGURE 3-6. KUBOTA ENGINE INSTALLATION (WITHOUT ARCTIC PACKAGE)

FIGURE 3-7. KUBOTA ENGINE INSTALLATION WITH 4000W GENERATOR (WITHOUT ARCTIC PACKAGE)

FIGURE 3-8. KUBOTA ENGINE INSTALLATION (WITH ARCTIC PACKAGE)

FIGURE 3-9. KUBOTA ENGINE INSTALLATION WITH 4000W GENERATOR (WITH ARCTIC PACKAGE)

FIGURE 3-20. AXIAL PUMP ASSEMBLY

FIGURE 3-21. GEAR PUMP ASSEMBLY

AND CHINA SPECS)

EXPORT, AUSTRALIAN, CE AND CHINA SPECS)

EXPORT, CHINA, CSA AND JAPANESE SPECS)

CHINA AND CSA SPECS)

EXPORT, CHINA AND CSA SPECS)

EXPORT, AUSTRALIAN, CE, CHINA AND JAPANESE SPECS)

SECTION 4 - BOOM

FIGURE 4-1. BOOM AND CYLINDERS INSTALLATION - WITHOUT ARCTIC PACKAGE

FIGURE 4-2. BOOM AND CYLINDERS INSTALLATION - WITH ARCTIC PACKAGE

FIGURE 4-3. TOWER BOOM ASSEMBLY

FIGURE 4-4. MAIN BOOM ASSEMBLY

FIGURE 4-5. JIB ASSEMBLY - WITHOUT ARCTIC PACKAGE

FIGURE 4-6. JIB ASSEMBLY - WITH ARCTIC PACKAGE

FIGURE 4-7. PLATFORM ROTATOR ASSEMBLY - WITHOUT ARCTIC PACKAGE

FIGURE 4-8. PLATFORM ROTATOR ASSEMBLY - WITH ARCTIC PACKAGE

FIGURE 4-9. PLATFORM SUPPORT INSTALLATION - WITHOUT LSS

Show all 88 sections

FIGURE 4-10. PLATFORM SUPPORT INSTALLATION - WITH 4 CELL LSS

FIGURE 4-11. PLATFORM SUPPORT INSTALLATION - WITH 1 CELL LSS

FIGURE 4-12. POWER TRACK INSTALLATION

FIGURE 4-13. CONTROL VALVES INSTALLATION - BOOM

FIGURE 4-14. FLY BOOM VALVE ASSEMBLY

FIGURE 4-15. BOOM UPRIGHT VALVE ASSEMBLY

SECTION 5 - PLATFORM

FIGURE 5-1. PLATFORM ASSEMBLY - 30IN X 4FT (76CM X 1.22M) - GATE ENTRY

FIGURE 5-2. PLATFORM ASSEMBLY - 30IN X 5FT (76CM X 1.52M) - GATE ENTRY

FIGURE 5-3. PLATFORM ASSEMBLY - 30IN X 4FT (76CM X 1.22M) - DROP BAR ENTRY

FIGURE 5-4. PLATFORM ASSEMBLY - 30IN X 5FT (76CM X 1.52M) - DROP BAR ENTRY

FIGURE 5-5. PLATFORM ASSEMBLY - 30IN X 3FT (76CM X .91M) - DROP BAR ENTRY

FIGURE 5-6. TRAY INSTALLATION

FIGURE 5-7. CONSOLE AND FOOTSWITCH INSTALLATION - DIESEL MACHINES WITHOUT SKYGUARD38 topics

WITH SKYGUARD
FIGURE 5-11. CONSOLE AND FOOTSWITCH INSTALLATION - GAS MACHINES WITHOUT SKYGUARD
SKYGUARD
FIGURE 5-19. CONSOLE ASSEMBLY WITH 1 CELL LSS - WITH SKYGUARD (SN 0300200802 through 0300257079)
FIGURE 5-20. CONSOLE ASSEMBLY WITH 1 CELL LSS - WITH SKYGUARD (SN 0300257079 through 0300272222)
FIGURE 5-21. LIFT/SWING CONTROLLER ASSEMBLY
FIGURE 5-22. DRIVE/STEER CONTROLLER ASSEMBLY
FIGURE 5-23. WORKLIGHTS INSTALLATION (OPTIONAL)
FIGURE 5-26. SKYEYE INSTALLATION
FIGURE 5-27. SKYLINE INSTALLATION
FIGURE 5-28. CROSS RAIL INSTALLATION
FIGURE 5-29. PIPE RACK INSTALLATION (AUSTRALIAN SPEC)
SECTION 6 - CYLINDER
FIGURE 6-1. AXLE LOCKOUT CYLINDER ASSEMBLY
FIGURE 6-2. LEVEL (PLATFORM SLAVE) CYLINDER ASSEMBLY (SN 0300200802 through 0300238046)
FIGURE 6-3. LEVEL (PLATFORM SLAVE) CYLINDER ASSEMBLY (SN 0300238046 through 0300272222)
FIGURE 6-4. LIFT (JIB) CYLINDER ASSEMBLY
FIGURE 6-5. LIFT (MAIN BOOM) CYLINDER ASSEMBLY
FIGURE 6-6. LIFT (TOWER BOOM) CYLINDER ASSEMBLY
FIGURE 6-7. MASTER CYLINDER ASSEMBLY
FIGURE 6-8. STEER CYLINDER ASSEMBLY
FIGURE 6-9. TELESCOPE CYLINDER ASSEMBLY
SECTION 7 - HYDRAULIC
FIGURE 7-1. HYDRAULIC INSTALLATION - WITHOUT ARCTIC PACKAGE
FIGURE 7-2. HYDRAULIC INSTALLATION - WITH ARCTIC PACKAGE
FIGURE 7-3. HYDRAULIC DIAGRAM LIST
SECTION 8 - ELECTRICAL
FIGURE 8-1. ELECTRICAL DIAGRAM LIST
AND CHINA SPECS)
FIGURE 8-3. AC BOX AT PLATFORM INSTALLATION - LOCALLY SUPPLIED (CE SPEC)
FIGURE 8-5. AC BOX AT PLATFORM INSTALLATION - 110V IEC YELLOW WITHOUT 4000W GENERATOR (CE SPEC)
FIGURE 8-6. AC BOX AT PLATFORM INSTALLATION - 110V IEC YELLOW WITH 4000W GENERATOR (CE SPECS)
FIGURE 8-7. AC BOX AT PLATFORM INSTALLATION - 220V (CSA SPEC)
FIGURE 8-8. AC BOX AT PLATFORM INSTALLATION - 220V IEC BLUE WITHOUT 4000W GENERATOR (CE SPEC)
FIGURE 8-9. AC BOX AT PLATFORM INSTALLATION - 220V IEC BLUE WITH 4000W GENERATOR (CE SPECS)
FIGURE 8-10. AC BOX AT PLATFORM INSTALLATION - 220V CEE7 POST GROUND 70 X 70 BOX (CE SPEC)
FIGURE 8-11. AC BOX AT PLATFORM INSTALLATION - 220V CEE7 SIDE GROUND 70 X 70 BOX (CE SPEC)
GENERATOR (CE SPEC)

(CE SPECS)

GENERATOR (CE SPEC)

SPECS)

AUSTRALIAN, CHINA AND JAPANESE SPECS)

FIGURE 8-19. AC CIRCUIT BREAKER INSTALLATION

FIGURE 8-20. AC POWER TO PLATFORM CABLE - MAIN BOOM (WITHOUT ARCTIC PACKAGE) (50HZ)

FIGURE 8-21. AC POWER TO PLATFORM CABLE - MAIN BOOM (WITH ARCTIC PACKAGE) (50HZ)

FIGURE 8-22. AC POWER TO PLATFORM CABLE - TOWER BOOM (WITHOUT ARCTIC PACKAGE) (50HZ)

FIGURE 8-23. AC POWER TO PLATFORM CABLE - TOWER BOOM (WITH ARCTIC PACKAGE) (50HZ)

FIGURE 8-24. AC POWER TO PLATFORM CABLE - MAIN BOOM (60HZ)

FIGURE 8-25. AC POWER TO PLATFORM CABLE - TOWER BOOM (60HZ)

FIGURE 8-26. BOOM CABLES, HARNESSES AND CLAMPS INSTALLATION - WITHOUT ARCTIC PACKAGE

FIGURE 8-27. BOOM CABLES, HARNESSES AND CLAMPS INSTALLATION - WITH ARCTIC PACKAGE

FIGURE 8-28. BOOM CABLES AND CLAMPS INSTALLATION - 4000W, 50HZ - WITHOUT ARCTIC PACKAGE

FIGURE 8-29. BOOM CABLES AND CLAMPS INSTALLATION - 4000W, 50HZ - WITH ARCTIC PACKAGE

FIGURE 8-30. BOOM CABLES AND CLAMPS INSTALLATION - 4000W, 60HZ - WITHOUT ARCTIC PACKAGE

FIGURE 8-31. BOOM CABLES AND CLAMPS INSTALLATION - 4000W, 60HZ - WITH ARCTIC PACKAGE

FIGURE 8-32. BOOM HARNESS - LIMIT SWITCHES AND UPRIGHT VALVE

FIGURE 8-33. BOOM HARNESS - MAIN

FIGURE 8-34. BOOM HARNESS - UPPER BOOM VALVE

FIGURE 8-35. BREAKER BOX KIT (CE SPEC)

FIGURE 8-36. CHASSIS HARNESS ASSEMBLY

FIGURE 8-37. CHASSIS LIGHT HARNESS

FIGURE 8-38. GENERATOR HARNESS - 2500W

FIGURE 8-39. GENERATOR HARNESS - 4000W

FIGURE 8-41. GENERATOR TO AC PLUG HARNESS - 2800W GENERATOR 110/50HZ (CE SPECS ONLY)

AND JAPANESE SPECS)

FIGURE 8-46. GM FUEL PUMP HARNESS

FIGURE 8-47. GROUND TO PLATFORM CABLE - MAIN BOOM (WITHOUT ARCTIC PACKAGE)

FIGURE 8-48. GROUND TO PLATFORM CABLE - MAIN BOOM (WITH ARCTIC PACKAGE)

FIGURE 8-49. GROUND TO PLATFORM CABLE - TOWER BOOM (WITHOUT ARCTIC PACKAGE)

FIGURE 8-50. GROUND TO PLATFORM CABLE - TOWER BOOM (WITH ARCTIC PACKAGE)

FIGURE 8-51. GROUND CONTROL HARNESS (ALL SPECS EXCEPT CE)

FIGURE 8-52. GROUND CONTROL HARNESS (CE SPEC)

FIGURE 8-53. GENERATOR TO PLATFORM HARNESS - WITH SKYGUARD

FIGURE 8-54. KUBOTA ENGINE HARNESS

FIGURE 8-55. LIMIT SWITCH HARNESS

FIGURE 8-56. LSS HARNESS

FIGURE 8-57. MID-ENGINE HARNESS

FIGURE 8-58. PLATFORM BOX HARNESS ASSEMBLY WITHOUT SKYGUARD

FIGURE 8-59. PLATFORM BOX HARNESS ASSEMBLY WITHOUT LSS OR WITH 4 CELL LSS - WITH SKYGUARD

FIGURE 8-60. PLATFORM BOX HARNESS ASSEMBLY WITH 1 CELL LSS - WITH SKYGUARD

FIGURE 8-61. RECEPTACLE BOX KIT - 110V IEC YELLOW (CE SPEC)

FIGURE 8-62. RECEPTACLE BOX KIT - 220V IEC BLUE (CE SPEC)

FIGURE 8-63. RECEPTACLE BOX KIT - 220V CEE7 POST GROUND 70MM X 70MM BOX (CE SPEC)

FIGURE 8-64. RECEPTACLE BOX KIT - 220V CEE7 SIDE GROUND 70MM X 70MM BOX (CE SPEC)

FIGURE 8-65. RECEPTACLE BOX KIT - 220V CEE7 POST GROUND 2IN X 4IN BOX (CE SPEC)

FIGURE 8-66. RECEPTACLE BOX KIT - 220V CEE7 SIDE GROUND 2IN X 4IN BOX (CE SPEC)

FIGURE 8-67. RECEPTACLE BOX KIT - 220V AFSINT 107 (CE SPEC)

FIGURE 8-68. SKYEYE EMITTER HARNESS23 topics

FIGURE 8-69. SKYEYE INTERMEDIATE HARNESS
FIGURE 8-70. SKYEYE RECEIVER HARNESS
FIGURE 8-71. SKYLINE HARNESS
FIGURE 8-72. STROBE LIGHT CONTROL (BLUE STROBE LIGHT)
FIGURE 8-73. STROBE LIGHT EXTENSION HARNESS (BLUE STROBE LIGHT ONLY)
FIGURE 8-74. VALVE HARNESS
FIGURE 8-75. BATTERY DISCONNECT SWITCH
SECTION 9 - DECALS
FIGURE 9-1. DECALS INSTALLATION - ANSI AND ANSI EXPORT SPECS (ENGLISH)
FIGURE 9-2. DECALS INSTALLATION - AUSTRALIAN SPEC (ENGLISH)
FIGURE 9-3. DECALS INSTALLATION - BRAZIL SPEC (PORTUGUESE/SPANISH)
FIGURE 9-4. DECALS INSTALLATION - CE SPECS (ENGLISH)
FIGURE 9-5. DECALS INSTALLATION - CHINESE SPEC (CHINESE/ENGLISH)
FIGURE 9-6. DECALS INSTALLATION - CSA SPEC (FRENCH/ENGLISH)
FIGURE 9-7. DECALS INSTALLATION - JAPANESE SPEC (JAPANESE)
FIGURE 9-8. DECALS INSTALLATION - KOREAN SPEC (KOREAN/ENGLISH)
FIGURE 9-9. DECALS INSTALLATION - LATIN AMERICA SPEC (SPANISH/ENGLISH)
FIGURE 9-10. OPTIONAL DECALS INSTALLATION
SECTION 10 - RECOMMENDED SERVICE PARTS STOCK
FIGURE 10-1. RECOMMEDED SERVICE PARTS STOCK
SECTION 11 - SPECIAL OPTIONS
FIGURE 11-1. SPECIAL OPTIONS
PART NUMBER INDEX

Inside this manual

Real pages from this parts manual (600 pages). Open the sample pages (PDF, 650 KB)

Sample pages from the JLG 340AJ Boom Lift Parts Manual: Parts illustration, Parts illustration, Parts illustration

Parts illustration, page 27: SECTION 1 - FRAME
Parts illustration, page 63: SECTION 2 - TURNTABLE
Parts illustration, page 351: SECTION 6 - CYLINDER

Other manuals for this machine

Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the 340AJ are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.

This manual: Parts Manual 3121739$69.87

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This is a parts manual

Here's how it compares to the other manual types.

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.

This manual

Parts manual

Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.

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, 600 pages

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