Used Case IH Transmission

Case IH CVX Transmission: Continuously Variable for Large Tractors

The CVX (Continuously Variable Transmission) is one of the most prevalent technologies in Case IH tractors from the 2000s onward. It combines a hydrostatic variator and a mechanical epicyclic gear train to provide perfectly smooth speed progression, without loss of traction, between 0 and 50 km/h. The operator sets a target speed range, and the transmission automatically manages the distribution between the hydrostatic and mechanical parts according to load and engine speed. This system equips models such as Puma 150 CVX, Puma 160 CVX, Puma 240 CVX, Maxxum 130 CVX, and CVX 130, all available in our stock. On these machines, the most wear-exposed components are the hydrostatic variator (internal leakdown), integrated hydraulic pumps and motors in the gearbox, internal drive shafts, and high-pressure seals. Replacing with a used complete gearbox checked in our workshop remains the fastest solution to get the machine operational again without going through a new-priced exchange.

Case IH Transmission Parts Stock at TMC Bejenne

• Complete gearboxes (39 in stock): Puma 150 CVX, Puma 160 CVX, Puma 240 CVX, Maxxum 5120, Maxxum 5140, Maxxum 130 CVX, MXU 115, MXU 125, MX 110, MX 170, MXM 175, 5140A, 845, 956 XL, 4230, CS 86, CVX 130, Magnum 250
• Output shafts (13 in stock): available for Axial-Flow tractors and combines
• Complete transmissions (12 in stock): Axial-Flow 1480, 1620, 1640, 1660, 1680, 2166, 2188, 2366, 2388, 5088, 7130, 8010
• Gearbox components (6 in stock): shafts, gears, forks, synchronizers
• Transmission belts (2 in stock)
• Advance variator (1 in stock) and speed reducer (1 in stock)
• 74 Case IH transmission parts available immediately, shipping within France and internationally
• Permanent stock of 25,000 references across our 11-hectare site in Naintré

Case IH Powershift and ActiveDrive Transmission: Semi-Automatic Gearboxes

Powershift refers to a load-shift transmission without traction interruption. Unlike a conventional mechanical gearbox requiring clutch disengagement at every shift, Powershift manages torque transfer via electronically controlled wet multi-disk clutches. Case IH applies this principle in two main variants. The ActiveDrive 4 (used on Maxxum and MXU series) offers four load-shift gears per speed range, finely adapting traction to working conditions without shutting off the engine. The ActiveDrive 8 (also known as DKT — Double Clutch Technology — found on higher-end ranges) doubles load-shift capacity with alternating clutches for even smoother transitions. These complex systems heavily stress multi-disk clutches, position sensors, and distribution solenoid valves. Failures often manifest as electronic error codes (TCU), refusal to engage the selected speed range, or jerks during operation. Transmission calibration (clutch slip point reset procedure) is the first step before any mechanical replacement.

Case IH Transmission Issues: Common Failures and Diagnosis

• Transmission error codes (TCU / ECU): read codes prior to any intervention; calibration codes (series 84xx) often indicate clutch disk wear rather than electronic failure
• Slippage under load: initial sign of multi-disk clutch wear on Powershift and ActiveDrive; start with calibration, replace if slippage continues
• CVX stuck in manual mode: usually linked to a faulty position sensor or internal leakage in the hydrostatic variator
• Leaking output shaft: priority seal replacement; if the housing is cracked, a used complete output shaft is quicker
• Transmission calibration: mandatory procedure after replacing a Powershift gearbox or clutch; to be performed with the Case IH AFS Pro diagnostic tool
• Cold knocking noise: wear of bearings or torque converter; to be distinguished from low transmission fluid
• Case IH transmission oil: must use Hy-Tran Ultra oil (or the equivalent specified by Case IH); never substitute with non-certified oil as it damages clutch disks

Case IH Transmission Oil, Filter, and Regular Maintenance

Transmission oil performs two roles in Powershift and CVX gearboxes: lubricating rotating mechanical parts and acting as the transfer fluid for hydraulic clutches. Degraded oil — worn or contaminated — rapidly deteriorates clutch disks and bearings. Case IH recommends Hy-Tran Ultra (MAT 3525 specification) for all its modern transmissions, with an oil change interval of 1,000 to 1,200 hours depending on the model. The transmission filter must be replaced at every oil change. On Puma CVX and Maxxum models, the transmission housing is shared with the rear hydraulics (PCHS), meaning oil quality also affects the operation of the lift and distributors. When replacing a used gearbox or transmission, drain and flush the circuit before refilling with certified new oil. Our technicians are available at 05 86 24 00 26 for any advice on procedures when installing parts from our stock.