Overview
The ZF 4681.084.031 4 BP 230 BASICPOWER Transmission Assembly represents a complete, ready-to-install unit engineered for demanding industrial driveline applications. This assembly functions as the core power transfer module within the BP 210 and BP 230 series, converting engine torque into controlled hydraulic and mechanical output for wheel loaders, forklifts, and construction machinery. The SKU 4681.084.031 is specifically configured as a 4-speed BasicPower variant, offering robust reliability for continuous duty cycles. As a complete assembly, it includes the torque converter, clutch packs, planetary gear sets, and valve body, eliminating the need for piecemeal component sourcing. This unit sits at the heart of the drivetrain, managing gear selection and load distribution under high-stress conditions.
Symptoms of Failure
When the ZF 4681.084.031 assembly begins to degrade, operators often notice delayed engagement or gear slipping under load, particularly when shifting from forward to reverse. A second common failure symptom is erratic shifting or harsh clutch engagement, which may manifest as jerky starts or unexpected gear hunting during operation. Third, external oil leaks around the torque converter housing or output shaft seal frequently indicate worn seals or bearing fatigue within the assembly. Finally, abnormal whining or grinding noises during acceleration suggest internal gear or bearing damage, often requiring immediate inspection to prevent catastrophic failure.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number / SKU | 4681.084.031 |
| Assembly Type | Complete Transmission Unit (4 BP 230 BASICPOWER) |
| Dimensions (L x W x H) | Approx. 620 mm x 480 mm x 450 mm |
| Dry Weight | Approx. 185 kg (408 lbs) |
| Housing Material | High-strength cast iron (GGG-40) |
| Torque Converter Diameter | 310 mm |
| Number of Speeds | 4 Forward / 3 Reverse |
| Max Input Torque | 230 Nm (estimated) |
| OEM Reference | ZF 4681.084.031 (OEM direct) |
| Fluid Capacity | Approx. 12 liters (ATF Dexron III) |
Compatibility
This complete transmission assembly is designed for integration with specific ZF drivetrain families. It is directly compatible with the BP 210 Series and BP 230 Series transmissions, which are commonly found in compact and mid-range industrial vehicles. Based on its construction and torque rating, the 4681.084.031 unit is also suitable for use in ZF WG180 and ZF WG200 transmission models, particularly in applications requiring a 4-speed BasicPower configuration. Additionally, it can serve as a direct replacement for earlier BP 200 series units with similar bellhousing patterns. Always verify the input flange and mounting bolt pattern against your existing transmission to ensure proper fitment.
Common Vehicle Applications
- Wheel loaders (e.g., ZL30, ZL40 series)
- Forklifts (10-16 ton capacity)
- Telehandlers and rough-terrain vehicles
- Industrial sweepers and compactors
