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Part of the New Holland Repair Manuals.
Need the factory specs for your New Holland compact tractor? All 734 pages of this New Holland TC18, TC21D, TC24D repair manual PDF (OEM #87032528) focus on getting your machine out of the shop and back in the dirt. Open to full wiring diagrams, hydraulic circuit schematics, and a massive troubleshooting section covering hydrostatic transmission faults. You get step-by-step disassembly instructions for the 6 x 2 gear transmission, mid-mount PTO overhauls, and front axle backlash adjustments. Confirm your 3-cylinder S753 engine has a 75 x 72 mm bore and stroke before tearing into the single dry disc clutch assembly. Stop guessing at pump pressure test values and hardware torques. Download this bookmarked file right now, pull it up on your shop tablet, and fix the problem on the first try.
What's Inside This New Holland TC18, TC21D, TC24D Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 13-46 | Introduction, Precautionary Statements, Safety, Tractor, Servicing the Tractor, Operating the Tractor, Driving the Tractor, Operating the PTO |
| Engine Systems | 47-152 | Engine Overhaul, Disassembly, Inspection, And Assembly of Component Assemblies, Engine Reassembly, Engine Lubrication System, Cooling System, Cooling System Overhaul |
| Single Clutch | 153-186 | Single Clutch Overhaul, Separating the Tractor - Between the Engine and Clutch Housing - 6 X 2 and 9 X 3 Transmissions, Servicing Clutch-Related Components, Troubleshooting |
| Transmission Systems | 187-280 | Introduction, X 2 Gear Transmission Description and Operation, X 2 Gear Transmission Overhaul |
| Front Axle - Front Wheel Drive | 281-296 | Front-Wheel Drive Front Axle Removal, Front-Wheel Drive Front Axle Installation, Backlash Adjustment, Troubleshooting - Front Axle, Specifications |
| Differential and Rear Axle | 297-318 | General Information, Overhaul, Specifications |
| Hydrostatic Transmission | 319-412 | Hydrostatic Transmission Description and Operation, Hydrostatic Transmission Overhaul, Hydrostatic Transmission Pressure Tests |
| Power Take-Off Systems | 413-430 | Standard Power Take-Off, Standard Power Take-Off Overhaul, Mid-Mount Power Take-Off, Mid-Mount Power Take-Off Overhaul, Specifications, Metric Bolt Torque Specifications |
| Brakes | 431-436 | Brakes and Final Pinion, Specifications, Brake Discs, Stators, Actuator Assembly, Brake Adjustment |
| Hydraulic System | 437-496 | Hydraulic System Circuits, Hydraulic System Circuits Overhaul, Hydraulic System Circuits Adjustments, Hydraulic Pump and Filter, Remote Control Valves |
| Steering System | 497-552 | Manual Steering System, Manual Steering System Overhaul, Power Steering System, Power Steering System Overhaul, Troubleshooting, Pressure Testing |
| Front Axle and Related Parts | 553-570 | Front Axle - Two-Wheel Drive, Front Axle - Two-Wheel Drive - Overhaul, Tread Settings, Weights, Wheels and Tires - Weight Limitation, Tire Inflation vs. Permissible Load |
| Electrical System | 571-708 | General Information and Components, Control and Safety Switches, Relays, Diodes, And Engine Electrics, Lighting and Instrument Panel, Starting and Charging Systems |
| Platform | 709-734 | General Platform Components, Operator Controls and Display, Seating and Safety Structure, Fuel System Component, Body Panels |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Specifications | 90 | p. 6 |
| Engine Model | S753 | p. 115 |
| Number of Cylinders | 3 | p. 115 |
| Clutch Type | Dry Disc | p. 185 |
| Number of Plates | One (1) | p. 185 |
| Clearance between differential pinion and pinion shaft | 0.1 - 0.3 mm (0.004 - 0.012 in.) | p. 296 |
| Wear Limit (differential pinion and pinion shaft) | 0.5 mm (0.020 in.) | p. 296 |
| cover retaining screws torque | 1.97 - 2.55 N·m (1.45 - 1.88 ft lbs) | p. 345 |
| retaining bolts torque | 16-19 N·m (12-14 ft lbs) | p. 346 |
| Hydrostatic Transmission Cover Screws | 2-2.5 N·m (1.4 - 1.9 ft lbs) | p. 408 |
| Shaft end play | 0.05-0.18 mm (0.002 - 0.007") | p. 417 |
| Coolant Temperature Sender Resistance at 35°C (95°F) | 670 ± 80 ohms | p. 611 |
New Holland TC18, TC21D, TC24D Common Problems This Manual Covers
New Holland TC18 TC21D TC24D hydrostatic transmission leaks fluid and tractor fails to operate after resealing
Inspect the port block and cover sealing surfaces using the troubleshooting guide on page 407. Torque the hydrostatic transmission cover screws to 2-2.5 N·m (1.4 - 1.9 ft lbs). Verify the HST port block retaining bolts are tightened to 31-38 N·m (23 - 28 ft lbs) during reassembly.
Manual Section: Hydrostatic Transmission Troubleshooting p. 407Front wheel drive differential slips under load and steering jerks during operation
Measure the clearance between the differential pinion and pinion shaft using a feeler gauge. Replace components if clearance exceeds 0.1 - 0.3 mm (0.004 - 0.012 in.) as specified on page 296. Torque the ring gear to 26 N·m (19 - 21 ft lbs) during final assembly.
Manual Section: Front Axle - Front Wheel Drive p. 296Rear power take-off shaft fails to engage or slips constantly under heavy implement load
Check the power take-off clutch assembly and output shaft bearings. Measure shaft end play with a dial indicator. Adjust the shims to achieve a shaft end play of 0.05-0.18 mm (0.002 - 0.007 inches) as detailed on page 417. Replace worn clutch plates if slippage continues.
Manual Section: Power Take-Off Systems p. 417Engine overheats rapidly under heavy load and coolant temperature gauge stops working completely
Inspect the electrical panel on page 643 and replace the blown 10-amp instrument panel fuse. Test the coolant temperature sender resistance with a multimeter. Replace the sender if it does not read 54.5 ± 2.7 ohms at 105°C (221°F). Clean the dirty hydrostatic cooler fins on page 407.
Manual Section: Electrical System Warning Lights & Gauges Troubleshooting p. 643Frequently Asked Questions
What are the torque specifications for engine bolts on New Holland TC18, TC21D, and TC24D tractors?
For New Holland TC18, TC21D, and TC24D tractors, the connecting rod caps should be torqued to 29 - 34 N·m (22 - 25 ft lbs), flywheel retaining nuts/bolts to 69 - 78 N·m (51 - 58 ft lbs), and cylinder head bolts to 49 - 52 N·m (36 - 38 ft lbs). p. 123
What are the replacement specifications for Front differential components?
For the front differential, the clearance between the differential pinion and pinion shaft should be 0.1 - 0.3 mm (0.004 - 0.012 in.), with a wear limit of 0.5 mm (0.020 in.). The differential pinion thrust washer thickness should be 1.1 - 1.2 mm (0.043 - 0.047 in.), with a wear limit of 1.0 mm (0.039 in.). p. 296
What is the engine oil capacity for the New Holland TC18, TC21D, and TC24D when changing the filter?
For the TC18 model, the engine crankcase capacity with a filter change is 2.8 liters (2.9 U.S. qts.). For the TC21D and TC24D models, the capacity with a filter change is 3.3 liters (3.5 U.S. qts.). p. 27
What is the cooling system capacity for the New Holland TC18, TC21D, and TC24D tractors?
The cooling system capacity for the New Holland TC18, TC21D, and TC24D tractors is 3.5 liters (3.7 U.S. qts.). This specification is consistent across all three models. p. 27
How quickly can I access this New Holland TC18, TC21D, TC24D manual after?
Instant PDF download. You get the full 734-page searchable Repair Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print this New Holland TC18, TC21D, TC24D 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.
Are there hydraulic schematics in this New Holland TC18, TC21D, TC24D manual?
Yes, complete hydraulic schematics with flow diagrams, valve configurations, and pressure specifications are included.
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