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JLG 1200SJP - Service Manual

JLG 1200SJP
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Service and Maintenance Manual
Models
1200SJP
1350SJP
P/N - 3121142
November 8, 2016
AS/NZS

Table of Contents

Other manuals for JLG 1200SJP

Questions and Answers

  • S
    sullivancharlesAug 17, 2025
    Why are my JLG 1200SJP overheating?
    • B
      Brian JonesAug 17, 2025
      Your JLG Boom Lifts may be overheating due to several reasons: * The oil level might be insufficient; in this case, check the oil level and refill if necessary. * The hydraulic oil could be too warm; verify the hydraulic circuit. * The brake may not be fully released; check the brake release pressure.
  • D
    Daniel CarterAug 20, 2025
    What to do if JLG Boom Lifts have external oil leakage?
    • B
      Brittney HuntAug 20, 2025
      If your JLG Boom Lifts are experiencing external oil leakage, the issue could stem from: * A damaged lifetime seal, O-ring seal, or plug seal. If any of these seals are damaged, replace them. * Loose plugs or screws. Tighten the plugs/screws to resolve this.
  • C
    calebgrahamAug 22, 2025
    Why is there too much noise coming from my JLG 1200SJP Boom Lifts?
    • B
      Brian RossAug 22, 2025
      Excessive noise from your JLG Boom Lifts can be attributed to: * A malfunctioning hydraulic circuit; verify the hydraulic circuit. * Internal damage; check the gearbox.
  • J
    Jennifer SmithAug 25, 2025
    What to do if JLG 1200SJP Boom Lifts have insufficient braking torque?
    • J
      Jerry DorseyAug 26, 2025
      If your JLG Boom Lifts exhibit insufficient braking torque, consider the following: * Worn brake discs; replace the brake disc pack. * Damaged parts; check the brake components.
  • K
    Kevin BrownAug 27, 2025
    Why is my JLG 1200SJP Boom Lifts overheating?
    • M
      Michael WilliamsAug 27, 2025
      Overheating in JLG Boom Lifts can occur due to several reasons: * The oil level might be insufficient, in which case you should check the oil level and refill if necessary. * The hydraulic oil may be too warm, requiring a check of the hydraulic circuit. * The brake might not be fully released, so verify the brake release pressure.
  • Z
    Zoe ScottAug 30, 2025
    Why is there insufficient braking torque in my JLG 1200SJP Boom Lifts?
    • L
      lewisgaryAug 30, 2025
      Insufficient braking torque in JLG Boom Lifts can be caused by: 1. Worn brake discs, which would require replacing the brake disc pack. 2. Damaged brake components, which would need inspection and potential replacement.
  • S
    Shawn WilliamsSep 2, 2025
    How to fix external oil leakage from the plugs in JLG Boom Lifts?
    • G
      grileySep 2, 2025
      If you notice external oil leakage from the plugs in your JLG Boom Lifts, it might be due to a damaged plug seal, in which case you should replace the plug seal. Alternatively, the plugs or screws might be loose, requiring you to tighten them.
  • K
    Kimberly FreemanSep 5, 2025
    Why is there too much hydraulic noise in JLG 1200SJP Boom Lifts?
    • C
      clarkkaylaSep 5, 2025
      Excessive hydraulic noise during the slowing down of the motor speed in your JLG Boom Lifts suggests a malfunctioning hydraulic circuit. You should verify the hydraulic circuit to address this issue.
  • K
    kimberlypaceSep 8, 2025
    How to repair external oil leakage from the end cover of JLG 1200SJP?
    • C
      Connie CuevasSep 8, 2025
      If there's external oil leakage from the end cover of your JLG Boom Lifts, it's likely due to a damaged O-ring seal. Replace the O-ring seals to resolve this issue.
  • J
    Julie JacobsSep 12, 2025
    What causes noise inside the gearmotor of JLG 1200SJP Boom Lifts?
    • B
      brookelawsonSep 12, 2025
      Excessive noise inside the gearmotor of your JLG Boom Lifts may indicate internal damage. Check the gearbox to identify and address any issues.

JLG 1200SJP Specifications

General IconGeneral
Platform Height120 ft
Horizontal Outreach75 ft
Platform Capacity - Unrestricted500 lb
Machine Width8 ft 2 in
Machine Height10 ft
Gradeability - 4WD45%
Working Height126 ft
Swing360° Continuous
ControlsProportional
Engine TypeDiesel
Platform Rotator180°
Drive Speed - 4WD4.83 km/h
Jib Range130 Degrees

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