Part of the New Holland Operator Manuals.
Check clutch free play at the pedal with a tape measure, or walk around a set of rear wheels with a torque wrench before ballast goes on, and you are using this book the way it was written. The New Holland TT4.80 and TT4.90 operator manual, publication 48135184, covers the daily and seasonal work: starting and shutdown, range and shuttle shift, differential lock, PTO engagement, three-point linkage, and the maintenance schedule from the first 50 hours onward.
Guessing is the expensive option. A wheel bolt run down by feel, a PTO clutch set by ear, a filter changed at the wrong interval: each one buys a second teardown, usually in the middle of a field.
140 pages in English, for PIN 1234 and above, with specifications, dimensions, and troubleshooting charts. Keep the PDF on a phone or tablet so the answers are wherever the tractor is.
What's Inside This New Holland TT4.80, TT4.90 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 7-10 | Lubrication and Maintenance General Information, Refueling the Tractor, Fuel Saving Tips for Optimum Performance, Guards and Access Panels, Lubricants and Coolants |
| Safety Information | 11-24 | Safety Rules, Ecology and the Environment, Trailer Hitching |
| Controls and Instruments | 25-42 | Access to Operator's Platform (Before Operating), Operator's Seat (Seat Belt) |
| Operating Instructions | 43-50 | Starting the Unit (Starting the Engine), Stopping the Unit (Stopping the Engine), Moving the Unit (Roll Over Protective Structure) |
| Transport Operations | 51-52 | Road Transport (Towing Attachments), Recovery Transport (Towing the Tractor) |
| Working Operations | 53-78 | Power Take-Off (- Grouped Safety Message, Attaching Power-Take Off Driven Equipment), Intercooler and Turbocharger (Aftercooler, Oil Cooler) |
| Maintenance | 79-118 | First 50 Hours (Change the Engine Oil, Change Engine Oil Filter, Hydraulic Oil Filter) |
| Troubleshooting | 119-122 | Fault Code Resolution (Maintenance - Troubleshooting) |
| Specifications | 123-134 | General Specification, Tractor Dimensions |
| Forms and Declarations | 135-140 | Pre-Delivery Report - Owner's Copy, Pre-Delivery Report - Dealer's Copy |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 2WD | ||
| Front Wheel Bolt Torque | 320.0 N·m | p. 71 |
| 4WD | ||
| Front Wheel Bolt Torque | 220 N·m | p. 72 |
| All Models | ||
| Axle extension securing bolts torque | 118 N·m (87 lb ft) | p. 71 |
| Tie rod locating bolt nut torque | 24.5 N·m (18 lb ft) | p. 71 |
| Clutch pedal free play | 35 – 40 mm | p. 92 |
| PTO clutch free travel | 30 – 35 mm | p. 106 |
| Valve tappet clearance (Inlet & Exhaust Valves) | 0.30 mm | p. 107 |
| Valve Tappet Clearance (Inlet & Exhaust) | 0.30 mm | p. 107 |
| Main system protection | 125 A | p. 125 |
| Maximum pump pressure | 207.0 bar (3001.5 psi) | p. 127 |
New Holland TT4.80, TT4.90 Common Problems This Manual Covers
Clutch drags and gears grind
As the lining wears, pedal free play closes up and the disc never fully releases, so the main shift lever fights you on every range change. The Maintenance section sets free play at 35 to 40 mm at the clutch pedal and covers the linkage adjustment.
Manual Section: Maintenance p. 92PTO keeps turning after disengagement
A mower or baler that coasts long after the PTO lever comes back usually means the PTO clutch free travel has gone away. The Maintenance section calls for 30 to 35 mm of free travel and walks through the adjustment.
Manual Section: Maintenance p. 106Wheel bolts loosen after ballast changes
Changing track width or adding wheel weights means the discs come off, and bolts run down by feel work loose under draft load. Working Operations gives front wheel bolt torque as 320.0 N·m on 2WD and the tie rod locating bolt nut as 24.5 N·m.
Manual Section: Working Operations p. 71Valve clatter and hard cold starts
Tappet clearance opens up with hours, showing as a clatter at idle and slow, smoky starting on a cold morning. The Maintenance section specifies 0.30 mm for both inlet and exhaust valves and refers the check and adjustment to your authorized dealer.
Manual Section: Maintenance p. 107Warning lights during a field pass
A lamp on the instrument cluster halfway down a row is worth reading before you shut down and lose the pass. The Troubleshooting section is a problem, possible cause and correction table, so you can read the likely cause before you shut down and lose the pass.
Manual Section: Troubleshooting p. 119Running hot in chaff and dust
Cooler screens pack with chaff and trash during harvest, and coolant temperature climbs long before anything else gets your attention. Working Operations covers the turbocharger, aftercooler, and oil cooler, with the cleaning and service intervals set out under Maintenance.
Manual Section: Working Operations p. 53Slow cranking and charging faults
Open station tractors collect small electrical faults, and a slow crank on a frosty morning is more often the battery or charging side than the starter. The Specifications section lists the alternator at 35 A / 90 A, battery rating at 100 A·h / 110 A·h, and main system protection at 125 A.
Manual Section: Specifications p. 125Frequently Asked Questions
Which tractors does this manual cover?
New Holland TT4.80 and TT4.90 tractors with the Iveco S8000 engine, PIN 1234 and above. It is New Holland publication 48135184, the operator manual, covering controls and instruments, operating instructions, working operations, maintenance, and specifications for both models.
Does it give wheel and axle torque figures?
Yes. Working Operations lists front wheel bolt torque at 320.0 N·m for 2WD and the tie rod locating bolt nut at 24.5 N·m, alongside the wheel and ballast setting instructions. p. 71
What fluid capacities are listed?
The Specifications section gives engine oil at 10.7 L, cooling system at 15.0 L, main fuel tank at 90.0 L, and rear axle and transmission oil at 37.0 L, so you can buy the right quantity before the service. p. 123
Will this help me troubleshoot, or do I need a service manual?
The Troubleshooting section is a problem, possible cause and correction table that points you at the likely cause. This is the operator manual, so it covers adjustment, service, and specifications rather than full component overhaul. p. 119
Do I get instant access to this New Holland TT4.80 Operator Manual?
A 140-page Operator Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Am I free to print this New Holland TT4.80 Operator Manual?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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