Case IH 2120 Overview
The Case IH 2120 was produced from 1988 through 1993. The spec listing identifies a 183.1 cubic inch (3.0 L) diesel engine and published claimed PTO power of 40 hp (29.8 kW).
The 2120 uses a Carraro-built chassis with open-center hydraulics, an independent rear PTO, and 2WD or 4WD configuration differences in the published dimensions.
Before buying parts or planning service, match the tractor's serial number, drive configuration, transmission, and PTO setup to the source you are using. One short spec row is not enough for ordering parts.
CaseIH 2120 Quick Answers
- Production years1988–1993
- Engine183.1 ci (3.0 L) diesel engine
- Rear PTO and hitch540 (1.375) rear PTO with a Category I/II rear hitch
- PTO powerClaimed PTO power is published as 40 hp (29.8 kW). Do not treat that as a Nebraska/OECD tested PTO value.
- Fuel capacity15.85 gal (60.0 L)
Engine and Power
The listed 183.1 ci (3.0 L) diesel has 17:1 compression and 2350 rated rpm. The published PTO rating is a claimed figure, not a Nebraska/OECD tested value.
Diesel engine
SLH 100.3.A / diesel / 3-cylinder / air-cooled
| Displacement | 183.1 ci 3.0 L |
|---|---|
| Bore Stroke | 4.134x4.547 inches 105 x 115 mm |
| Air Cleaner | dual dry element |
| Compression | 17:1 |
| Rated Rpm | 2350 |
| Torque | 115.1 lb-ft 156.1 Nm |
| Torque Rpm | 1200 |
| Firing Order | 1-3-2 |
| Starter | electric |
| Starter Volts | 12 |
| Engine Oil Capacity | 7.1 qts 6.7 L |
| Intake Valve Clearance | 0.008 inches * Cold. 0.203 mm |
| Exhaust Valve Clearance | 0.008 inches * Cold. 0.203 mm |
Manufacturer
Manufacture years
Transmission
Transmission notes: offerings include partially synchronized gears with 8 or 12 forward/reverse arrangements; clutch action and range shifts depend on configuration.
8-speed partially synchronized
| Type | partially synchronized |
|---|---|
| Gears | 8 forward and reverse |
| Clutch | 280mm dry disc |
| 2wd Oil Capacity | 38 qts 36.0 L |
| 4wd Oil Capacity | 40.2 qts 38.0 L |
12-speed partially synchronized
| Type | partially synchronized |
|---|---|
| Gears | 12 forward and reverse |
| Clutch | 280mm dry disc |
| 2wd Oil Capacity | 38 qts 36.0 L |
| 4wd Oil Capacity | 40.2 qts 38.0 L |
PTO and Hitch
PTO and hitch: the rear PTO is independent and listed as 540 (1.375) at 540@2115 engine rpm, with a Category I/II rear hitch.
Rear PTO
Rear PTO type
Engine RPM
Rear hitch
Hydraulics
Hydraulics: the listing shows an open-center system with 15.6 gpm (59.0 lpm) pump flow and 1 or 2 valves.
Type
Pump flow
Valves
Fluids, Battery, and Service Facts
Maintenance context: engine oil capacity is listed at 7.1 qts (6.7 L); electrical entries show 12 V negative ground and a 100 Ah battery. Use the correct manual or parts source for fluid types and filters.
Fuel tank
Battery volts
Battery Ah
Tires and Dimensions
Tire and dimension values can vary by wheel, axle, and configuration.
Weight
Front tire
Electrical
Electrical rows are included when documented.
Ground
Charging system
Charging amps
Battery volts
Serial Number Lookup
Serials help narrow year and configuration. The serial number plate is listed on the right side of the tractor's console.
location
Manuals and Documents
The documents below are source leads for older Case IH manuals and parts lookup. They are useful for finding the right document or diagram, not for replacing the tractor-specific manual.
Match coverage carefully before relying on a document for service decisions, especially when one manual or catalog covers several models, transmissions, or tractor variants.
Manual
- Operator Manuals - Case IH (Older Models Prior to 2007)operation, maintenance, safety notes
Case IH's guidance for obtaining operator manuals; notes that older-model manuals (pre-2007) are purchased via the Document Management Center.
Open source - Document Management Center (Case IH) - older-model operator manualsoperation, maintenance
Pointer to purchasing operator manuals for older Case IH equipment (pre-2007).
Open source
Parts catalog
- CASE 2100 Parts - ProPart Ricambiparts matching
Parts catalog for the Case IH 2100 series including 2120; provides part numbers and diagrams.
Open source
Parts Checks Before Ordering
Do not order CaseIH 2120 parts from the model name alone. Match the part to the tractor's model code, serial range, engine, transmission, PTO setup, and build year before selecting service parts.
Filters, fluids, belts, electrical parts, clutch and PTO parts, and hydraulic parts can vary by setup. Exact part numbers require a parts catalog, manual, or trusted supplier source before making recommendations.
Accuracy Note
Tractor specifications can vary by year, region, factory configuration, installed equipment, and later repairs. Match serial range, engine, transmission, PTO setup, and model code before ordering parts or doing service work.