Overview
This genuine ZF 4651.006.007 6 WG 100(500) Powershift Transmission Assembly represents a complete drop-in unit engineered for heavy-duty off-highway machinery. As a fully assembled gearbox, it integrates the torque converter, clutch packs, and hydraulic control system into a single, pre-tested package. The SKU 4651.006.007 is specifically configured for the WG 100 series, providing the precise gear ratios and torque capacity required for loaders, dozers, and graders operating in demanding environments. This assembly eliminates the need for piecemeal component replacement, ensuring immediate operational readiness and restoring original equipment performance.
Symptoms of Failure
When the ZF 4651.006.007 assembly begins to degrade, operators will notice distinct performance issues. Watch for these specific failure indicators:
- Delayed engagement or clutch slipping under load: The transmission hesitates before moving forward or reverse, or the engine revs without corresponding machine movement, especially on inclines.
- Erratic shifting or harsh gear changes: The unit may slam into gear or fail to shift smoothly between ranges, often accompanied by a loud clunking noise from the driveline.
- External oil leaks at the main housing seals: Hydraulic fluid pools around the bell housing or output flange, indicating worn gaskets or cracked casings that compromise pressure.
- Overheating and burnt transmission fluid odor: The assembly runs abnormally hot, and the fluid darkens quickly, signaling internal clutch pack wear or torque converter failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Assembly Weight | Approx. 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 560 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| Input Torque Capacity | 500 Nm (continuous) |
| OEM Reference | ZF 4651.006.007 / 6 WG 100(500) |
| Fluid Capacity | 12.5 liters (ZF EcoFluid M-1) |
Compatibility
This complete unit is engineered for the ZF WG 100 series of powershift transmissions. It is a direct replacement for the 6 WG 100(500) variant. Based on its design and torque rating, the 4651.006.007 assembly is compatible with the following ZF transmission models and their derivatives:
- ZF WG 100 (all sub-variants, including 6 WG 100)
- ZF WG 120 (when specified with 500 Nm input)
- ZF WG 150 (limited compatibility, verify bell housing pattern)
This assembly is not compatible with the WG 180, WG 200, or WG 250 series without significant modifications to the driveline and control system. Always cross-reference your machine’s serial number with the ZF parts catalog before ordering.
