Part of the New Holland Repair Manuals.
What's inside: the factory service manual for New Holland T4.55, T4.65 and T4.75 PowerStar tractors, Tier 4B (Final) units from PIN ZDAH00008 and up. It runs from the engine and dual clutch through the 8x8 and 12x12 mechanical shuttle transmissions (plus the 20x20 creeper), 4WD, both axles, PTO, brakes, hydraulics, steering, cab climate control, the front loader and bodywork. The electrical section is the big one: a full set of wiring diagrams (p901-1820) with a how-to-read guide at p928. You get real numbers, not filler: clutch housing screws 117-129 N·m (p98), driven plate wear limit 10.4-10.6 mm (p99), lift pump flow 45 l/min (p576), fluid capacities on p19.
What's Inside This New Holland T4.55, T4.65, T4.75 Manual
| System | Pages | Key Topics |
|---|---|---|
| Contents | 4-8 | Section Contents, Manual Organisation |
| Introduction | 9-22 | Machine Identification, Safety Rules, Capacities, Consumables, Standard Torque Data |
| Engine | 23-70 | Engine and Crankcase, Fuel Tanks, Exhaust Gas Recirculation (EGR), Diesel Particulate Filter (DPF), Fan and Drive |
| Clutch | 71-116 | Clutch Mechanical Release Control, Clutch Hydraulic Release Control, Clutch and Components |
| Transmission | 117-268 | Mechanical Transmission, Power Shuttle Transmission, Creeper, Reverser, Transmission Cooler and Lines |
| Four-Wheel Drive (4WD) System | 269-288 | 4WD Engagement, Drive Line Service, Fault Finding |
| Front Axle System | 289-364 | Powered Front Axle, Non-Powered Front Axle, Axle Support Specifications |
| Rear Axle System | 365-396 | Powered Rear Axle, Bevel Gear Set and Differential, Planetary Final Drives |
| Power Take-Off (PTO) | 397-520 | Rear Electro-Hydraulic Control, One-Speed and Two-Speed Rear PTO, PTO Clutch |
| Brakes and Controls | 521-572 | Service Brakes, Parking Brake, Brake Controls |
| Hydraulic Systems | 573-672 | Fixed Displacement Pump, Remote Control Valves, Three-Point Hitch Control Valve, Front Loader Hydraulic System |
| Hitches, Drawbars, and Implement Couplings | 673-722 | Three Point Hitch, Drawbar, Implement Couplings |
| Steering | 723-790 | Hydrostatic Steering, Steering Cylinder, Control Components |
| Wheels | 791-806 | Front Wheels, Rear Wheels, Tread Settings |
| Cab Climate Control | 807-900 | Heating, Ventilation, Air Conditioning |
| Electrical Systems, Harnesses and Schematic Sheets | 901-1247 | Wiring Harnesses, Connectors, Electrical Schematic Sheets, How to Read the Diagrams, Fuses and Relays |
| Starting System and Alternator | 1248-1273 | Engine Starting System, Starter Motor, Alternator Service |
| Battery and Electronic Modules | 1274-1305 | Battery Service, Electronic Control Modules |
| Rear PTO Control System | 1306-1309 | Rear Power Take-Off Control System |
| Warning Indicators, Alarms and Instruments | 1310-1337 | Warning Indicators, Alarms, Instrument Cluster |
| Fault Codes | 1338-1820 | Fault Code Listings, Diagnostic Procedures |
| Front Loader and Bucket | 1821-1878 | Loader Frame, Bucket, Hydraulic Controls |
| Platform, Cab, Bodywork, and Decals | 1879-1963 | Operator Platform, Cab, Bodywork Panels, Decals |
| Special Tool Index | 1964-1969 | Special Service Tools Index |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel tank capacity | 90 l | p. 19 |
| Engine oil sump capacity | 8.5 l | p. 19 |
| Cooling system capacity (without cab) | 14 l | p. 19 |
| Cooling system capacity (with cab) | 16 l | p. 19 |
| Brake circuit control capacity | 0.7 l | p. 19 |
| Lift hydraulic pump flow | 45 l/min (11.89 US gpm) | p. 576 |
| Clutch housing to rear transmission box screws torque | 117 - 129 N.m (86 - 95 lb ft) | p. 98 |
| Main clutch driven plate thickness | 10.4 - 10.6 mm | p. 99 |
| PTO clutch driven plate thickness | 7.4 - 7.8 mm | p. 99 |
| Transmission types | 8x8 and 12x12 mechanical with mechanical shuttle, 20x20 with creeper | p. 99 |
New Holland T4.55, T4.65, T4.75 Common Problems This Manual Covers
Clutch slips under load or the shuttle grabs late after years of loader work
Pull the clutch and measure the driven plate: the manual gives 10.4-10.6 mm thickness for the cerametallic main plate on p99. It then walks you through setting the release levers to the 100.5 mm nominal distance using gauge 380000293 before you bolt the housing back at 117-129 N·m.
Manual Section: Clutch p. 99PTO chatters, drags when disengaged, or the hand lever needs a gorilla pull
The PTO clutch is hand lever operated with its own organic-lined plate, spec 7.4-7.8 mm thick. The manual covers setting the PTO release levers to 140 mm with 0.1 mm clearance, which fixes most engagement complaints without buying parts.
Manual Section: Power Take-Off (PTO) p. 576Intermittent electrical faults: dead gauges, no crank, lights cutting out on rough ground
Start at the HOW TO USE THE WIRING DIAGRAMS guide on p928, then trace your circuit through the schematic sheets that begin at p935. With a full set of wiring diagrams you can follow one wire from fuse to connector instead of shotgunning parts at it.
Manual Section: Electrical systems p. 928Three-point hitch lifts slowly or drops out under a heavy implement
Before condemning the pump, test it against the factory number: 45 l/min (11.89 US gpm) lift pump flow on p576. The Hydraulic systems section covers the lift circuit checks, and p19 gives you the correct fill capacities when you refill after repair.
Manual Section: Hydraulic systems p. 521Frequently Asked Questions
Does this manual include the full wiring diagrams, or just a few sample schematics?
Full diagrams. The Electrical systems section runs from page 901 to 1820, about 900 pages, with schematic sheets starting at p935 and a HOW TO USE THE WIRING DIAGRAMS guide at p928 so you can actually trace a circuit instead of guessing at wire colors. p. 99
Which tractors does it cover exactly?
T4.55, T4.65 and T4.75 PowerStar, the Tier 4B (Final) emissions version, PIN ZDAH00008 and above. If your serial number sits below that, check your PIN plate before buying, because earlier Tier 4A machines differ in several systems. p. 928
Are the clutch adjustment specs and special tools listed?
Yes, and this is where the book earns its money. Main clutch release lever nominal distance is 100.5 mm, PTO levers 140 mm, both with 0.1 mm clearance. It names the factory tools by part number: centering pin 380001612, adjustment gauge 380000293 and lever wrenches 380000256, plus a full special tool index. p. 576
Is there a hydraulic schematic in this manual?
No fold-out hydraulic schematic, and I will not pretend otherwise. The Hydraulic systems section covers service procedures and test values like the 45 l/min (11.89 US gpm) lift pump flow on p576, which is what you need for diagnosis, but circuit tracing on paper is limited to the electrical side. p. 19
Does it cover both transmission options?
Yes. The 8x8 mechanical transmission with mechanical shuttle and the 12x12 with the 20x20 creeper unit are both in there, along with torque values like the creeper casing bolts at 117-129 N·m and the bearing support bolts at 84-93 N·m. p. 397
Reviews
There are no reviews yet.