Part of the New Holland Repair Manuals.
Need the factory book for your New Holland TC21DA or TC24DA? This 720-page repair manual (OEM #87053135) covers both tractors nose to tail, from the cylinder head down to the ROPS platform. Inside you get complete wiring diagrams for the electrical system, hydraulic schematics covering the control valve assembly and main system relief valve, and a full troubleshooting section for chasing hydrostatic transmission and PTO faults. Open to the specs section and you'll find the fuel tank holds 20 liters (5.3 U.S. gallons) and the cooling system takes 3.5 liters (3.7 U.S. quarts); torque tables cover minimum hardware tightening values so you're not clamping a head bolt by feel. No more flipping through a shop manual missing half its diagrams. Bookmarked by system, so you jump straight to the clutch, axle, or steering section without hunting through 720 pages.
What's Inside This New Holland TC21DA, TC24DA Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 33-58 | Introduction, Precautionary Statements, Safety, Tractor, Servicing the Tractor, Operating the Tractor, Driving the Tractor, Operating the PTO |
| Engine Systems | 59-164 | Cylinder Head, Valve Train Components, Cylinder Block Assembly, Fuel System, Cooling System, Crankshaft |
| Single Clutch | 165-196 | Free Play Adjustment, Clutch Pilot Bearing, Clutch Release Bearing, Flywheel Dimensions, Clutch Linkage Adjustment |
| Transmission Systems | 197-244 | 9 X 3 Gear Transmission, Power Flow, Transmission Shift Cover, Input Shaft, Main Shaft, Countershaft |
| Front Axle -- Front Wheel Drive | 245-260 | Front Axle, Differential, Pinion, Ring Gear, Final Pinion and Wheel Shaft, Backlash Adjustment |
| Differential and Rear Axle | 261-282 | Differential, Differential Lock |
| Hydrostatic Transmission | 283-378 | - |
| Power Take-Off Systems | 379-396 | - |
| Brakes | 397-402 | - |
| Hydraulic System | 403-462 | Hydraulic System Circuits, Oil Filter, Control Valve Assembly (Hpl), Hydraulic Pump, Remote Control Valves, Main System Relief Valve |
| Power Steering System | 463-504 | Power Steering Control Valve, Spool and Sleeve, Gerotor Pump, Power Steering Pump, Power Steering Cylinder, Relief Valve |
| Wheels and Tires | 505-510 | Tread Setting, Weights, Liquid Ballast, Tire Inflation, Lug Bolt Torque, Wheel Hub Bolt Torque Sequence |
| Electrical System | 511-702 | Wiring Harnesses, Battery, Key Start Switch, Safety Controller, Electrical Wiring Diagram, Starting Circuit |
| Platform | 703-720 | Hood, Steering Wheel, Instrument Panel and Console, Fuel Tank, Seat and Seat Suspension, Roll Over Protection System (ROPS) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Specifications - TC21DA, TC24DA | 15 | p. 2 |
| General Dimensions - TC21DA, TC24DA | 20 | p. 2 |
| Fuel Tank | 20 liters/ 5.3 U.S. gals. | p. 47 |
| Cooling System | 3.5 liters/ 3.7 U.S. qts. | p. 47 |
| Fuel Tank Capacity | 20 liters / 5.3 U.S. gals | p. 47 |
| Cooling System Capacity | 3.5 liters / 3.7 U.S. qts | p. 47 |
| Cylinder Head Warp (Standard) | 0.05 mm (0.002 in.) | p. 128 |
| Clutch Pedal Free-Travel | 19 mm-30 mm (3/4″-1-3/16″) | p. 49 |
| Rear PTO Shaft Diameter | 35 mm (1-3/8 in.) | p. 49 |
| Hydraulic Pump Capacity @ Engine Speed 2600 rpm | 18.4 L/min (4.9 U.S. GPM) | p. 49 |
| TC21DA | ||
| Engine Gross Horsepower | 21.0 | p. 47 |
| TC24DA | ||
| Engine Gross Horsepower | 24.0 | p. 47 |
New Holland TC21DA, TC24DA Common Problems This Manual Covers
New Holland TC21DA engine hard to start in cold weather, cranks fine but won't fire
Check the troubleshooting chart first to rule out fuel delivery and glow plug faults. Verify low idle sits between 1100 and 1200 RPM per the specs on page 47, and confirm you're running No. 2-Diesel with a minimum 40 cetane rating above 40 degrees F. Bleed air from the fuel lines before condemning the injection pump.
Manual Section: Engine Systems TroubleshootingFuel not reaching the injection pump, engine starts then stalls repeatedly under heavy load
Check the fuel filter and lines for restriction, since fuel not reaching the injection pump causes repeated stalling under load. Verify the tank holds its full 20 liter (5.3 U.S. gallon) capacity per the specs on page 47. Confirm you're running No. 2-Diesel rated at minimum 40 cetane, then bleed air from the injection pump before restarting.
Manual Section: Fuel System TroubleshootingClutch slipping under heavy load, pedal has excessive free-play, difficulty engaging gears smoothly
Check clutch pedal free-travel first; it should measure 19 mm to 30 mm (3/4 to 1-3/16 inches) per the specs on page 49. Out-of-range free-play causes slipping or drag during engagement. Inspect the linkage for wear and adjust the pedal stop bolt to bring travel back into spec. Replace the organic-face friction disc if wear exceeds the service limit.
Manual Section: Single Clutch TroubleshootingTractor fails to stop at neutral in hydrostatic drive, erratic noise under load
Start at the neutral centering linkage; a mistracked adjustment is the most common cause of failure to stop at neutral. Check charge pressure and swash plate linkage per the procedures beginning on page 283, with the engine at its rated 2600 RPM. Inspect for internal piston leakage if oil overheats, and top off the reservoir before retesting.
Manual Section: Hydrostatic Transmission Troubleshooting p. 283Three-point hitch lift arms won't raise implement to full height, oil overheating during operation
Check system relief valve; it should hold at 130 bar (1849 PSI) per the specs on page 49. If the implement won't reach full height or the pump overheats, inspect it for wear since rated flow is 18.4 L/min (4.9 U.S. GPM) at 2600 RPM. Review the hydraulic circuit procedures beginning on page 403 and check for a stuck control valve spool.
Manual Section: Hydraulic System Troubleshooting p. 403Glow plug indicator light won't illuminate, engine hard to start when cold outside
Check the main fuse in the glow plug circuit first; a blown fuse kills the indicator light and glow plug function together. Test battery output; it should read 12-volt with a minimum 325 CCA rating, and verify the alternator charges at its rated 40 amps. If the fuse and battery test good, trace the glow plug relay wiring using the diagrams beginning on page 511.
Manual Section: Electrical System Troubleshooting (Glow Plug Circuit) p. 511Frequently Asked Questions
What are the torque specifications for the cylinder head bolts on the New Holland TC21DA engine?
The cylinder head bolts on the New Holland TC21DA engine should be tightened to a final torque specification of 49 - 52 N⋅m (36 - 38 ft lbs). This is done in sequence, first to half torque value, then to the final specification. p. 102
What is the engine oil capacity for the New Holland TC21DA and TC24DA tractors when changing the filter?
The engine oil capacity for both TC21DA and TC24DA tractors, when including a filter change, is 3.3 liters or 3.5 U.S. quarts. p. 47
What is the cold valve clearance for both intake and exhaust valves on the New Holland TC21DA and TC24DA engines?
The cold valve clearance for both intake and exhaust valves on the New Holland TC21DA and TC24DA engines should be set to 0.20 mm (0.008″). This adjustment is made by loosening the locknut and adjusting the screw. p. 47
What is the recommended belt deflection for the cooling system on New Holland TC21DA and TC24DA tractors?
The recommended belt deflection for the cooling system on New Holland TC21DA and TC24DA tractors is 10 mm-15 mm (7/16″-9/16″) when a force of 9-11 kg (20-25 lbs.) of thumb pressure is applied midway between the belt pulleys. p. 48
How quickly can I access this New Holland TC21DA, TC24DA manual after buying?
This is a 720-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print this New Holland TC21DA, TC24DA manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Can I find hydraulic circuit diagrams in this New Holland TC21DA, TC24DA manual?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings.
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