Fully power-split CVT
Continuous power delivery across the forward and reverse drive range supports smooth operation without conventional fixed-ratio interruptions.
ZF Agriculture
ZF cPOWER – power-split CVT performance for forestry forwarders and skidders.
ZF cPOWER is a fully power-split continuously variable transmission for forestry forwarders and skidders. Continuous forward and reverse operation, smooth hydraulic starting and controlled low-speed engine operation help forestry machines move heavy loads with precision and productivity.
The system is designed around demanding off-highway work cycles where traction, manoeuvrability, fuel use and machine availability must be balanced across loading, forwarding, terrain changes and extraction.
Core product benefits
The product benefits below describe the operating value of the family for agricultural vehicle owners and service specialists.
Smooth hydraulic start
The hydrostatic start characteristic supports controlled movement when loading, positioning and entering difficult terrain.
Low engine speed operation
The transmission can maintain machine speed independently of engine speed within the permitted operating strategy, supporting efficient work cycles.
Traction under changing load
Continuous ratio control helps the machine respond to terrain, payload and extraction resistance.
Forestry-specific application
cPOWER is presented for forwarders and skidders, not as a generic agricultural tractor transmission.
Service identification
The exact CP model and TE-ML 03 class are essential when response, traction, temperature or oil symptoms appear.
ZF cPOWER forestry operating functions
The functions below show how the product works in the vehicle and which systems must be considered when a symptom appears.
Forward and reverse CVT range
The power-split concept provides continuous ratio control in both travel directions for precise machine positioning.
Hydrostatic-mechanical power path
Hydrostatic and mechanical paths combine to balance controllability and efficient power transfer.
Load-sensitive response
The ratio strategy follows traction demand and operating condition rather than relying on a simple fixed gear selection.
Forestry payload context
Payload, terrain, tire condition and extraction resistance affect heat, pressure and driveline behaviour.
Condition-monitoring inputs
Fault memory, temperature, oil condition, pressure and operating data should be assessed together.
Machine-system integration
The CVT must be diagnosed together with engine control, hydraulic systems, axles and operator controls.
Understanding cPOWER application contexts
ZF documents cPOWER as a fully power-split CVT for demanding off-highway work. The same family appears in more than one machine category, but the CP designation alone does not establish a unique machine application.
Why this matters: Do not assign a CP model to one machine category or transfer its oil, interval or diagnostic assumptions from another application without checking the exact type plate and current service information.
ZF cPOWER forestry applications and typical ranges
The table summarizes the verified product designations and application boundaries. Exact compatibility remains dependent on the individual vehicle and unit.
| Application | Designations | Typical range and use |
|---|---|---|
| Forestry forwarders and skidders | cPOWER CP family | ZF documents cPOWER for forestry forwarders and skidders; exact CP model, payload and machine configuration remain specific. |
| Construction and industrial applications | CP 190, CP 210, CP 230, CP 260, CP 290, CP 310 and CP 330 | ZF also lists the family for graders, wheel loaders and material handling; confirm the exact installation before compatibility or repair planning. |
| Forestry skidders | cPOWER forestry family | Power-split CVT control supports traction and manoeuvring in demanding extraction work where approved. |
| Heavy off-highway cycles | cPOWER CP family | Loading, forwarding, extraction and terrain changes place different demands on the transmission and its oil/pressure system. |
Oil change and filter service
Forestry cPOWER units are covered by TE-ML 03 entries, but the exact CP designation and operating conditions remain decisive. Class 03G includes the Genuine ZF products; class 03L and low-temperature provisions must be checked against the current list.
| Product group | Application | Class / boundary | Service guidance |
|---|---|---|---|
| CP 190 / CP 210 / CP 230 / CP 260 / CP 290 / CP 310 / CP 330 | cPOWER CVT applications | TE-ML 03G / 03L | ZF PowerFluid Plus or ZF PowerFluid C-Plus applies to class 03G; select by exact unit and current list. |
| Cold-weather operation | cPOWER off-highway service | TE-ML 03F where specified | Temperature limits and change-over instructions must be checked before operation. |
| Filter and pressure circuit | Response or traction symptoms | Model-specific | Do not assume a clogged filter or internal CVT fault without oil, pressure and diagnostic checks. |
The exact unit, vehicle configuration and operating conditions must be confirmed from the type plate and service information before parts, oil or repair work is planned.
ZF cPOWER forestry FAQ
Technical answers for tractor owners, agricultural workshops and manufacturers.
What should be checked when cPOWER responds slowly or loses traction?
Record the CP model, operating temperature, load, direction, terrain and whether the symptom changes after warming up. Check fault memory, oil level and condition, filter history, pressure behaviour, sensors and control data before assuming an internal CVT fault. Send the complete information to ATS so the correct diagnostic and repair route can be defined.
Why can a cPOWER machine behave differently when hot than when cold?
Temperature changes affect oil viscosity, pressure response, leakage behaviour, control calibration and the hydrostatic circuit. Compare cold and hot symptoms, check the correct oil and filter history, and record pressure or fault data rather than changing parts based only on the temperature difference. ATS can interpret the evidence against the exact CP configuration.
How is the correct cPOWER oil selected?
The exact CP model and current TE-ML 03 entry determine the approved service provision. Class 03G includes ZF PowerFluid Plus and ZF PowerFluid C-Plus; other entries may require the applicable class and temperature provision. Do not transfer oil or interval information from a Construction or Material Handling cPOWER without confirming the application.
When should a cPOWER transmission be removed for repair?
Removal should follow checks of fault memory, oil and filter condition, pressure, temperature, control data, leakage and the complete driveline. Persistent loss of drive, contamination, abnormal mechanical noise or confirmed internal pressure/gear damage can support an overhaul decision. ATS can distinguish an external service or control issue from a remanufacturing requirement.
Need post-sale support for a ZF cPOWER forestry transmission?
Send ATS the data from the transmission identification table, including the Part List Number and Serial Number, together with the machine manufacturer and model, machine serial number, operating hours, fault codes, symptoms, operating temperature, oil and filter history and any available diagnostic information. We will help define the appropriate next step for parts, diagnosis, repair or remanufacturing.
Contact ATS