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JLG 1350SJP - Service Manual

JLG 1350SJP
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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 1350SJP

Questions and Answers

  • N
    newtonscottAug 17, 2025
    Why are my JLG Boom Lifts overheating?
    • R
      Richard CurtisAug 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.
  • M
    Megan EllisAug 20, 2025
    What to do if JLG Boom Lifts have external oil leakage?
    • D
      Dominique SimsAug 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.
  • S
    Stephanie DayAug 22, 2025
    Why is there too much noise coming from my JLG 1350SJP?
    • J
      Joseph SmithAug 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.
  • B
    Brandon LeeAug 26, 2025
    What to do if JLG Boom Lifts have insufficient braking torque?
    • J
      John HendersonAug 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.
  • M
    Monica MuellerAug 28, 2025
    Why is my JLG Boom Lifts overheating?
    • M
      mike61Aug 28, 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.
  • S
    Sherri SullivanAug 30, 2025
    Why is there insufficient braking torque in my JLG Boom Lifts?
    • M
      michael70Aug 31, 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.
  • W
    William PerrySep 2, 2025
    How to fix external oil leakage from the plugs in JLG 1350SJP Boom Lifts?
    • E
      erica07Sep 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.
  • B
    bradleypetersonSep 5, 2025
    Why is there too much hydraulic noise in JLG Boom Lifts?
    • K
      Keith TaylorSep 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.
  • S
    Samuel WongSep 7, 2025
    How to repair external oil leakage from the end cover of JLG Boom Lifts?
    • D
      Dustin EstradaSep 7, 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.
  • G
    Gina MedinaSep 12, 2025
    What causes noise inside the gearmotor of JLG 1350SJP Boom Lifts?
    • S
      Stephanie SmithSep 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.

Summary

Section A: Introduction - Maintenance Safety Precautions

General Safety Precautions

General safety precautions for aerial platform maintenance. Importance of following warnings and precautions.

Hydraulic System Safety

Hydraulic systems operate at high pressures; pressure relief is required before disconnection.

Maintenance Safety Precautions

Safety points for maintenance, including compliance with warnings and precautions.

Section 1: Specifications

Capacities

Lists capacities for Hydraulic Tank, Fuel Tank, and Hydraulic System.

Engine Data

Details specifications for Deutz BF4M2011 and Caterpillar 3.4T engines.

Specifications and Performance Data

Provides reach specifications, dimensional data, and chassis specifications.

Torque Requirements

Lists torque values for various components like wheel bolts, swing bearing bolts, and tele cylinder mounting.

Hydraulic Oil

Specifies hydraulic oil requirements based on operating temperature range and SAE viscosity grade.

Lubrication and Operator Maintenance

Covers lubrication intervals and specifications for various components.

Section 2: General

Machine Preparation, Inspection, and Maintenance

Covers machine preparation, pre-start, pre-delivery, annual inspections, and preventative maintenance.

Service and Guidelines

Provides information on safety, workmanship, cleanliness, and component removal/installation.

Lubrication and Information

Details hydraulic system contamination, lubrication procedures, and battery maintenance.

Cylinder Drift Test

Procedures for measuring acceptable platform and cylinder drift.

Pins and Composite Bearing Repair Guidelines

Guidelines for inspecting and replacing filament wound bearings and pins.

Welding on JLG Equipment

Instructions and warnings regarding welding on JLG equipment.

Section 3: Chassis & Turntable

Tires & Wheels

Covers tire inflation, damage criteria, and wheel/tire replacement procedures.

Steering Control System

Details steering modes, sensors, and how the control system synchronizes wheel movement.

Oscillating Axle System

Describes the oscillating front axle system, including lockout cylinders and their function.

Drive Hub

Provides procedures for different drive hub models (Rexroth, Bonfiglioli, Reggiana Riduttori).

Swing Drive

Covers roll and leak testing, and tightening/torquing bolts for the swing drive.

Swing Brake

Details pre-installation checks, installation, maintenance, and disassembly of the swing brake.

Swing Motor

Provides disassembly and inspection procedures for the swing motor.

Swing Bearing

Covers turntable bearing mounting bolt condition checks, wear tolerance, removal, and installation.

Engine

Provides information on engine operation, glow plugs, checking oil level, and changing engine oil.

Bio Fuel in Deutz Engines

Covers general use of bio fuels, approved engines, and basic conditions to observe.

CAT DGC Diagnostic Support and Trouble Code Definitions

Defines diagnostics and troubleshooting procedures for the CAT 3.4 engine ECM.

Section 4: Boom & Platform

Boom Systems

Describes systems like Broken Cable Indicator, Platform Control Enable, and Transport Position Sensing.

Boom Removal, Disassembly;Assembly, & Cable Replacement

Detailed steps for removing, disassembling, assembling, and replacing boom cables.

Boom Lubrication Application

Procedure for applying lubricant to booms after assembly or during annual application.

Boom Shimming Procedure

Procedure for measuring and adjusting boom sweep using shims.

Load Sensing Pin Removal and Installation

Steps for removing and installing the load sensing pin, including sensor recalibration.

Section 5: Hydraulics

Lubricating O-Rings in the Hydraulic System

Procedures for lubricating O-rings on hydraulic fittings using cup/brush, dip, or spray methods.

Cylinder Repair

General procedures for cylinder disassembly, cleaning, inspection, and assembly.

Hydraulic Tank

Describes the hydraulic tank capacity, return filter, suction strainers, and oil level checks.

Pressure Setting Procedure

Procedures for setting hydraulic pressures, including high and low pressure relief valves.

Drive Pumps

Troubleshooting procedures for transmission drive issues.

Hydraulic Centering of Control Modules

Procedures for centering control modules, including EP and HD/EP control modules.

Section 6: JLG Control System

Introduction

Overview of the JLG Control System, its components, and functionality.

CANbus Communications

Explains CANbus communication principles and module interactions.

Calibration Instructions

Lists calibration procedures required for various sensors and machine functions.

Calibrating Steer

Procedure for calibrating steering to ensure proper alignment of tires and wheels.

Calibrating Drive

Procedure for calibrating the drive system using the analyzer.

Calibrating Platform Level

Steps for setting platform valve minimums and calibrating platform level sensors.

Calibrating Lift Crack Point

Procedure for calibrating the lift crack points for the machine.

Calibrating Telescope Crack point

Procedure for calibrating telescope crack points for the machine.

Calibrating Tilt Sensor

Procedure for calibrating the tilt sensor before machine operation.

Calibrating the Boom Sensors

Step-by-step procedure to calibrate boom sensors for proper operation.

Section 7: Basic Electrical Information, Electrical & Hydraulic Schematics

General

Basic electrical information and schematics for locating and correcting operating problems.

Multimeter Basics

Instructions for using a multimeter for various circuit measurements.

Applying Silicone Dielectric Compound to Electrical Connections

Procedure for applying silicone dielectric compound to electrical connectors to prevent oxidation.

AMP Connector

Assembly and disassembly procedures for AMP connectors.

Deutsch Connectors

Assembly and disassembly procedures for Deutsch connectors.

JLG 1350SJP Specifications

General IconGeneral
Platform Height135 ft
Working Height141 ft
Horizontal Outreach80 ft
Platform Capacity - Unrestricted600 lb
Platform Capacity - Restricted1000 lb
Machine Width8 ft 2 in
Machine Height10 ft
Gradeability - 4WD45%
Engine TypeDiesel
Fuel Tank Capacity40 gal
Drive Speed - 4WD2.5 mph
Swing360 Degrees Continuous
Platform Rotator180°
Jib Range130 Degrees
ControlsProportional
Ground Clearance14 in
Axle Oscillation±8 in

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