2006-2012 JLG G6-42A, G9-43A & G10-43A - Comprehensive Telehandler Service & Repair Manual

JLG Telehandler Service & Repair Manual | Models G6-42A, G9-43A, G10-43A

Maintain peak operational efficiency and ensure job site safety with the definitive service resource for JLG Telehandlers. This professional-grade manual provides comprehensive, step-by-step instructions for the maintenance, troubleshooting, and overhaul of the G6-42A, G9-43A, and G10-43A series. Whether you are managing a fleet or performing a critical field repair, this guide offers the technical depth required for Oshkosh Corporation equipment.

Extensive Model & Engine Coverage

This manual covers a wide range of configurations across the G-Series, including specific data for various engine manufacturers and induction types found in these machines:

• JLG G6-42A (2006–2012)
• JLG G9-43A (2006–2012)
• JLG G10-43A (2009–2012)
• Engine Variants Covered:
  • John Deere PE 4045D150 (Naturally Aspirated) & PE 4045TF150/TF270 (Turbo)
  • Perkins 1104-C 44T (Turbo)
  • Cummins QSB3.3 (High-performance Turbo)

Critical Technical Specifications

Gain access to factory-spec data that is vital for correct machine calibration and component longevity:

• Serial Number Identification: Specific instructions for locating machine, transmission, axle, and engine serial plates to ensure correct parts ordering.
• Advanced Transmission Support: Full service procedures for both Dana Spicer and ZF transmission units, including shift solenoid diagnostics and torque converter overhaul.
• Hydraulic Precision: Detailed schematics and pressure settings (ranging from 450 psi standby to 4100+ psi main relief) for lift, tilt, and outrigger circuits.
• Axle & Braking Systems: Specialized maintenance for Carraro and Dana axle assemblies, including limited-slip features and manual park brake release procedures for disabled machines.

What is Included

• Boom Maintenance: Complete removal and installation of three-section boom assemblies, including internal extend/retract chain adjustments and wear pad shimming.
• Electrical Schematics: Comprehensive circuit breakdowns, fuse/relay locations for both engine compartment and cab, and VEC module pin-outs.
• Lubrication & Service Schedules: Interval-based maintenance charts (10, 50, 250, 500, 1000, and 2000 hours) to maximize uptime.
• Torque Benchmarks: Complete SAE and Metric fastener torque charts, plus specialized hydraulic hose "Flats Method" tightening guides.
• Troubleshooting: Extensive diagnostic tables for engine performance, transmission shifting, and hydraulic cylinder malfunctions.

Equip your service department with the same high-level documentation used by factory technicians to keep JLG Telehandlers lifting safely and reliably on every project.