Overview
The ZF 0501.221.607 MOTOR is a critical OEM genuine hydraulic motor component designed for integration within ZF heavy-duty transmission assemblies. This part functions as the primary drive unit, converting hydraulic pressure into mechanical torque to engage clutch packs and shift gears in construction machinery. Positioned directly within the transmission valve body or pump drive housing, the 0501.221.607 motor ensures precise oil flow control for smooth power delivery under extreme loads. The SKU 0501.221.607 is engineered to OEM tolerances, guaranteeing direct replacement without modifications. When paired with the 4699100022: BASIC PARTS kit and the 4699300138: HOUSING, this motor forms the core of the transmission’s hydraulic actuation system.
Symptoms of Failure
When the ZF 0501.221.607 motor begins to wear, operators will notice distinct performance degradation. Delayed gear engagement or slipping under load is the most common symptom, often accompanied by erratic shifting patterns. Hydraulic oil leaks around the motor seal area indicate internal seal degradation, leading to pressure loss. Unusual whining or grinding noises from the transmission during operation suggest bearing wear or internal scoring. Finally, overheating of the transmission fluid occurs when the motor fails to maintain proper hydraulic flow, causing excessive friction. These failure modes directly impact the 4699300156: GEAR SHAFT and 4699300127: PLANET CARRIER assemblies if left unaddressed.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0501.221.607 |
| Type | Hydraulic Drive Motor |
| Material | High-strength alloy steel / Cast iron housing |
| Weight | Approx. 8.2 kg (18.1 lbs) |
| Dimensions (L x W x H) | 210 mm x 120 mm x 110 mm |
| OEM Reference | ZF 0501.221.607 (Genuine) |
| Operating Pressure | Up to 25 bar (362 psi) |
| Seal Type | Viton / NBR O-ring |
Compatibility
This ZF motor is primarily compatible with ZF WG series transmissions commonly found in wheel loaders, telehandlers, and excavators. Specific models include WG180, WG200, and WG211 series, as well as certain 4WG200 and 6WG200 variants. It also fits select ZF Ergopower and ZF Ecomat transmissions used in construction machinery. Always verify your transmission serial number before ordering. The 0501.221.607 motor integrates directly with the 4699300098: INNER DISK CARRIER and 4699200011: RING GEAR in these assemblies.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699100022 | BASIC PARTS | Core repair kit for transmission assembly |
| 4699300138 | HOUSING | Encloses motor and gear components |
| 4699300156 | GEAR SHAFT | Transfers torque from motor to planetary set |
| 4699300127 | PLANET CARRIER | Holds planetary gears for speed reduction |
| 4699300098 | INNER DISK CARRIER | Supports clutch disk pack alignment |
| 4699200011 | RING GEAR | Outer gear for planetary rotation |
| 4699300152 | TOOTHED DISC | Engages with clutch plates for gear selection |
| 4699300153 | RING GEAR | Secondary ring gear for torque multiplication |
| 4699300154 | RING | Retaining ring for shaft positioning |
| 4699300128 | PLANETARY GEAR | Individual gear within planet carrier assembly |
