Part of the New Holland Operator Manuals.
Hi-Lo clutch calibration on the electro-hydraulic power-shuttle is the trickiest job in this 285-page New Holland TN55D operator manual PDF (OEM ID 603.64.451.00). The book covers five TN-D and TN-S tractor variants and widens out to range and shuttle shift layouts, creeper and splitter units, differential lock and PTO operation. Hydraulic lift chapters take the three-point linkage through mechanical and electronic control, lift solenoid valve calibration, rear remote valves, and metal or liquid ballasting. Your service schedule runs from 10-hour checks to the 1200-hour, two-year interval, with indicator light meanings and troubleshooting charts for engine, electrical and hydraulic faults. Set both Hi and Lo clutch calibration values between 230 and 480 mA, then confirm clutch pedal travel at 150 ± 2 mm. Bookmarks and a searchable text layer take you straight to that calibration page.
What's Inside This Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 8-31 | To the User, Tractor Identification, Important Ecological Considerations, Always Work Safely, Working Safely, Safety Decals, Standardised Symbols, Noise Level Information |
| Information | 32-47 | Safety Covers and Guards, Controls and Instruments, Towing the Tractor |
| Operating Instructions and Instrument Panels | 48-63 | Before Using the Tractor, Analogue Instrument Panel, Digital Instrument Panel, Function Indicators, Calibrating the Instrument |
| Transmission Operation | 64-85 | Light Control Lever, Electro-Hydraulic Shuttle, Mechanical Shuttle, Creeper Unit, Splitter Unit, Speed Tables |
| Hydraulic Lift and Three-Point Linkage | 86-106 | Mechanical Hydraulic Lift, Electronically Controlled Hydraulic Lift, Lift Solenoid Valve Calibration, Three-Point Linkage, Quick-Fit Implement Linkage |
| Towing and Ballasting | 107-120 | Towing Equipment, Rigid Hitch, Metal Ballasting, Liquid Ballasting, Maximum Permitted Weights |
| Steering and Wheel Track Adjustment | 121-141 | Steering Wheel Adjustment, Seat Adjustment, Wheel Track Adjustment, Steering Angle Adjustment, Tyre Combinations |
| Cab and Air Conditioning | 142-201 | Heated and Ventilated Cab, Doors, Windows, Air Conditioning Controls, Air Conditioning Maintenance, Prolonged Tractor Inactivity |
| Lubrications and Maintenance | 202-247 | Lubrication and Maintenance (Introduction, Tractor Refuelling, Access for Inspection and Maintenance) |
| Troubleshooting | 248-255 | Engine, Electrical System, Hydraulic System |
| Specification | 256-279 | Dimensions, Engine Specifications, Transmission Specifications |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hi (B) clutch calibration value | 230mA - 480mA | p. 97 |
| Lo (A) clutch calibration value | 230mA - 480mA | p. 97 |
| Retention screws (1) and (2) fig. 131 tightening torque | 220 Nm (22.5 kgm - 162.68 ft.lb) | p. 160 |
| Steering struts fixing screws (1) fig. 132 tightening torque | 39 Nm (4 kgm - 29 ft.lb) | p. 160 |
| Transmission clutch pedal travel | 150 ± 2 mm (5.90 ± 0.07 in) | p. 208 |
| Fuel system bleeding - fuel/oil mix ratio | 10% | p. 230 |
| Transmission and services oil filter tightening | 3/4 of a turn by hand | p. 220 |
| Hi-Lo/Power shuttle oil filter tightening | 3/4 of a turn by hand | p. 220 |
| Valve clearance, timing inspection | 0.45 mm (0.017 in) | p. 264 |
| Engine Oil Capacity (without filter) | 6.7L | p. 245 |
| Engine Oil Capacity (with filter) | 7.5L | p. 245 |
| Fuel Tank Capacity | 75L | p. 245 |
