Part of the New Holland Repair Manuals.
This New Holland TC23DA, TC26DA repair manual PDF runs 716 pages of factory service data, OEM part number 87367140, covering both compact tractor variants front axle to drawbar. Hydraulic schematics trace circuit flow from pump to remote valves, wiring diagrams map every harness connector, and troubleshooting charts walk each fault from symptom to cause. Overhaul procedures carry the engine from disassembly through crankshaft and main bearing installation. Fill the rear axle and transmission, hydraulics included, with 16 liters of fluid, and pull connecting rod caps down to 29 to 34 N·m (22 to 25 ft lbs). This bookmarked PDF has a text layer for your spec lookups.
What's Inside This New Holland TC23DA, TC26DA Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Complete Contents | 1-34 | Specifications, Lubricants, Adjustments, Special Tools, Description and Operation, Identification Chart, Cylinder Head and Valve Train Components, Overhaul, Engine Preparation, Disassembly, Fuel Injector and Glow Plug, Removal, Oil Pressure Switch, Temperature Sending Switch and Alternator |
| General Information | 35-60 | Introduction, Precautionary Statements, Safety, Tractor, Servicing the Tractor, Operating the Tractor, Driving the Tractor, Operating the PTO, General Dimensions, Minimum Hardware Tightening Torques, Length, Wheel Base, Height, Width, Ground Clearance, Wheel Tread Settings, Metric Non-Flanged Hardware, Locknuts, Carriage Bolts, Inch Non-Flanged Hardware, Hex Cap Screw and Carriage Bolts |
| Engine Systems | 61-172 | Engine |
| Single Clutch | 173-206 | Single Clutch Systems |
| Transmission | 207-254 | Transmission Systems |
| FWD Front Axle | 255-272 | FWD Front Axle Systems |
| Differential, Rear Axle | 273-294 | Differential and Rear Axle Systems |
| Hydrostatic Transmission | 295-392 | Transmission, Transmission Systems |
| Power Take-Off (PTO) | 393-410 | |
| Brakes | 411-416 | |
| Hydraulic System | 417-476 | |
| Steering | 477-518 | |
| Wheels and Tires | 519-526 | |
| Electrical System | 527-698 | |
| Platform | 699-716 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Rear Axle & Transmission (Includes Hydraulics) Capacity | 16 liters / 4.23 U.S. gals. | p. 49 |
| Fuel Tank Capacity | 20 liters / 5.3 U.S. gals. | p. 49 |
| Hydraulic Oil Ambra Multi G 134 | 1QT / .946L, 1G / 3.785L, 2.5G / 9.46L, 5G / 18.93L | p. 59 |
| Connecting Rod Caps Torque | 29 - 34 N·m (22 - 25 ft lbs) | p. 74 |
| Flywheel Retaining Nuts/Bolts Torque | 69 - 78 N·m (51 - 58 ft lbs) | p. 74 |
| Oil pressure relief valve installation torque | 58.8 - 68.6 N·m (43.4 - 50.6 ft lbs) | p. 131 |
| Ring Gear Bolts Torque | 26 - 28 N·m (19 - 22 ft-lbs.) | p. 274 |
| Differential Case Housing Bolt Torque | 30 - 38 N·m (22 - 28 ft-lbs.) | p. 274 |
| Hydrostatic control rod length (turnbuckle top end to bottom rod end center) | 137 mm (5.39 in.) | p. 378 |
| Hydrostatic control rod length (top of turnbuckle to bottom of spring holder) | 26 mm (1.02 in.) | p. 378 |
| Suction filter replacement interval | 300 hours | p. 424 |
| Hydraulic oil filter replacement interval | every 300 hours | p. 448 |
New Holland TC23DA, TC26DA Common Problems This Manual Covers
Engine hard to start or dies right after a fuel filter change
Fill the tank; it only holds 20 liters and running it low pulls air. Open the bleed screws and crank until fuel runs clear with no bubbles. Inspect suction side fittings for loose connections drawing air. If it still starves, test injector opening pressure against the 118 bar (1704 psi) spec on page 144.
Manual Section: Fuel System Troubleshooting p. 144Transmission to rear end housing seeps oil, case bolts keep backing off
Clean the housing joint and mark the wet spot so you can confirm the leak source. Check each case bolt against the minimum hardware torque chart on page 23 and retorque any loose ones. If the seep continues, split the joint, replace the gasket, and refill the sump to its 16 liter (4.23 gal) capacity.
Manual Section: Minimum Hardware Tightening Torques p. 23Hydrostatic drive backs up fine but barely pulls or will not move forward
Check the hydrostatic pedal linkage before blaming the pump. Measure the control rod at 137 mm (5.39 in.) from turnbuckle top to bottom rod end center and adjust it per page 378 if off. Verify the pedal stop bolt at 33 mm (1.30 in.), then confirm the shared 16 liter sump is full before splitting anything.
Manual Section: Transmission p. 378Engine runs hot mowing in high heat, coolant pushes out the overflow
Check coolant level cold; the system only holds 3.5 liters, so a small loss matters. Clean chaff and dirt from the radiator core and grille screen with low pressure air. Test the radiator cap and thermostat, inspect the fan belt for glazing, then work the overheating checks in the troubleshooting procedures starting on page 82.
Manual Section: Engine Troubleshooting p. 82Frequently Asked Questions
What are the torque specifications for the TC23DA front axle bolts?
The torque specifications for metric non-flanged hardware on the TC23DA front axle depend on the bolt size and grade. For example, an M10 bolt of grade 8.8 requires 56 N·m (41 ft. lbs.) when plated with ZnCr, while an M12 bolt of grade 8.8 requires 97 N·m (72 ft. lbs.) under the same conditions. p. 57
What are the replacement specifications for the engine oil filter on the New Holland TC23DA, TC26DA?
The engine oil filter must be replaced every 100 hours of operation. When installing a new filter, coat its face with clean oil and hand tighten only. p. 129
What is the correct valve clearance for the TC23DA and TC26DA engines?
The valve clearance for both the intake and exhaust valves on the TC23DA and TC26DA engines is 0.20 mm (0.008 in.) when cold. p. 49
How do you fix new Holland TC23DA three point hitch lifts slowly, drops under load, loader feels weak?
Check the transmission and rear axle sump first; it holds 16 liters and feeds the hydraulics. Top up with AMBRA MULTI G 134 and replace the suction filter if it has 300 hours on it. If lift stays weak, test main relief pressure against the 128 bar (1849 psi) spec on page 475. p. 475
What do I get after purchasing this New Holland TC23DA manual?
Delivery is instant: a 716-page searchable PDF is yours the second checkout clears. Laptop, tablet, or phone, all fine.
Is printing allowed for this New Holland TC23DA Repair Manual?
Yes. Print the pages you need for the job in your own shop, and bin them when they get greasy.
Are wiring diagrams part of this New Holland TC23DA Repair Manual?
The New Holland TC23DA, TC26DA Repair Manual includes wiring diagrams. There is one on page 580, for example.
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