New Holland LM840, LM850, and LM860 Telehandler OEM Service Manual

This factory-issued New Holland service manual (P/N 86609405) serves as the definitive technical reference for the LM840, LM850, and LM860 telehandlers (March 2000 publication). Designed for professional mechanics and advanced DIYers, it provides comprehensive data on the 4x4 power shuttle transmission, bevel gearbox, and drivetrain systems. Whether you are running routine diagnostics or planning a complete transmission repair, this fully searchable PDF eliminates guesswork on the shop floor.

Key Features & Manual Scope

• Covers 2000 New Holland telehandler variants equipped with 4x4 power shuttle transmissions.
• Includes high-resolution, exploded-view diagrams for the transmission, bevel gearbox, and torque converter assemblies.
• Outlines complete hydraulic, electrical, and mechanical gear train specifications.
• Details diagnostics for front and rear axles, planetary hub assemblies, differential assemblies, wet multi-disc brakes, brake servo units, hydrostatic steering motors, and telescopic boom sections.
• Features step-by-step protocols for bevel pinion adjustments, brake circuit bleeding, swivel pin preload calculations, steering cylinder overhauls, flow divider valve testing, parking brake calibration, and boom wear pad shimming.

Beyond the drivetrain, the content details specialized step-by-step instructions that traditionally require an expensive dealership visit. For example, the reference explains exactly how to execute a proper wet brake bleed, perform a torque converter stall test, calculate the specific pinion depth, and shim the telescopic boom wear pads to exact factory tolerances. The specific advantage for your shop is the ability to bypass trial-and-error diagnostics. By following the targeted troubleshooting flowcharts and testing procedures, mechanics can confidently perform every repair, ensuring safe load distribution and significantly reducing flat-rate labor times.

Transmission and Bevel Gearbox Technical Data

This 204-page manual delivers the exact baseline specifications needed to verify system health. You will find precise metrics for transmission control, directional valve operations, and internal gear train synchronization. Expect a logical, section-by-section breakdown of removal, inspection, and reassembly protocols.

Essential Diagnostic Values Instead of hunting through pages of text, the manual provides immediate access to critical test port data, including:

• Transmission main system pressure: 14.5–15.5 bar (210–225 psi)
• Torque converter relief valve: 7.5 bar (109 psi)
• Clutch pack pressure (Forward/Reverse): 13.5–14.5 bar (195–210 psi)
• Lubrication system pressure: 1.0–1.7 bar (15–24 psi)
• Transmission solenoid resistance: 5 ohms

Safety Notice: The specifications listed above are reference examples of the depth of data included. Always rely on the complete specifications within this manual and follow standard shop safety practices before beginning any high-pressure hydraulic tests or mechanical tear-downs.