Part of the New Holland Operator Manuals.
The rear axle on a TC23DA shares its oil with the transmission and the hydraulic system, so one careless fill can hurt all three at once. The Lubrication and Maintenance section of this New Holland operator manual walks that shared sump along with the fuel filter, air cleaner, lubrication fittings, and cooling system, with the service intervals that keep a small diesel healthy between seasons.
New Holland issued it as publication 87544694 for the TC23DA and TC26DA compact tractors. Across 108 pages it also covers safety, the instrument panel, starting the engine, the main shift and range levers, brake controls, and a Specifications chapter with capacities and torque figures for both models.
When the mower is hitched, the weather is turning, and there is nobody around to ask, the 24 bookmarks and the index take you straight to the page you need, and any of it prints one sheet at a time for the bench.
What's Inside This New Holland TC23DA, TC26DA Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 7-19 | Personal Safety, Safety Decals |
| General Information | 20-23 | Minimum Hardware Tightening Torques |
| Operation | 24-55 | Seat, Seat Belt, And Rollover Protective Structure, Instrument Panel, Starting the Engine, Lighting, Brake Controls, Transmission Main Shift Lever and Range Lever |
| Lubrication and Maintenance | 56-93 | Lubrication Fittings, Fuel Filter, Air Cleaner, Transmission, Rear Axle and Hydraulic System, Cooling System |
| Specifications | 94-101 | Engine, Cooling System, Clutch |
| Predelivery Report | 104-108 | Tire Pressure, Hydraulic Lift Control, Brake Adjustment, Clutch Pedal, PTO Shield, ROPS |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Injector line fitting torque | 24-29 N·m (18-22 ft. lbs.) | p. 65 |
| Front Wheel Torque | 81 N⋅m (60 ft-lb) | p. 83 |
| Rear Wheel Torque | 115 N⋅m (85 ft-lb) | p. 83 |
| Fuel Tank Capacity | 20 liters | p. 94 |
| Cooling System Capacity | 3.5 liters | p. 94 |
| Rear Axle & Transmission Oil Capacity | 16 liters | p. 94 |
| Front Axle Final Reduction Oil Capacity | 0.8 liter | p. 94 |
| Differential Gear Case Oil Capacity | 1 liter | p. 94 |
| ROPS Attaching Bolt Torque | 54.2 N·m | p. 98 |
| Seat Belt Bolt Torque | 47.4 N·m | p. 98 |
| System Relief Valve Setting | 130 bar | p. 96 |
New Holland TC23DA, TC26DA Common Problems This Manual Covers
Engine starves after fuel filter service
Air pulled into the lines during a filter change is the classic hard-start on these small diesels, and it always happens the morning you planned to cut hay. The fuel filter service is covered step by step in the Lubrication and Maintenance section.
Manual Section: Lubrication and Maintenance p. 56Slow or jerky three-point hitch
Because the hydraulics draw from the same sump as the transmission and rear axle, low or wrong oil shows up first as a lift that hesitates under a loaded implement. The Lubrication and Maintenance section covers checking and servicing that shared system.
Manual Section: Lubrication and Maintenance p. 56Overheating during summer mowing
Chaff packing the radiator and a low coolant level will push the temperature up fast in July mowing. Cooling system checks and service are laid out in the Lubrication and Maintenance section.
Manual Section: Lubrication and Maintenance p. 56Range lever grinds or will not engage
Forcing a range change without a full stop and the clutch all the way down is how these transmissions get chewed up. The Operation section explains the main shift lever and range lever pattern so shifts go in clean.
Manual Section: Operation p. 24Warning lights nobody can explain
A light comes on mid-job and there is no one in the field to ask what it means. The Operation section documents the instrument panel so you can tell a real fault from a reminder before you shut down.
Manual Section: Operation p. 24Uneven brakes pull the tractor sideways
Pedals that grab at different heights make road travel and loader work sketchy. Brake adjustment appears on the Predelivery Report checklist, alongside clutch pedal and PTO shield checks worth repeating on a used tractor.
Manual Section: Predelivery Report p. 104Frequently Asked Questions
Does this manual cover both the TC23DA and the TC26DA?
Yes. It is New Holland publication 87544694, the operator manual for both the TC23DA and TC26DA compact tractors. One book covers both models, and where figures differ the Specifications section lists them by model. p. 94
Does it include fluid capacities?
Yes. The Specifications section lists a 20 liter fuel tank, 3.5 liter cooling system, 16 liters for the shared rear axle, transmission and hydraulic system, 0.8 liter per front axle final reduction, and 1 liter for the differential gear case. p. 94
Are wheel and hardware torque figures included?
Yes. The Lubrication and Maintenance section gives 81 N·m for front wheels and 115 N·m for rear wheels, and the General Information section adds a minimum hardware tightening torque chart for everything else on the tractor. p. 56
Does it include the electrical wiring diagram?
Yes. Two full wiring sheets are bound at the end of the Lubrication and Maintenance section, drawing numbers 60046481 and 60046480, covering the tractor's electrical circuits. p. 91
How do I get the manual after buying?
It is a direct PDF download available immediately after purchase. Save a copy to your phone or shop laptop and it works offline, so it is still with you in the field where there is no signal.
Is this New Holland TC23DA manual a download or a disc?
Immediate download of the complete 108-page searchable Operator Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Are there any print restrictions on this New Holland TC23DA manual?
Yes. The PDF is DRM-free, so printing works from any reader and any printer.
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