Overview
The ZF 4699.170.216 MOTOR is a critical hydraulic drive component engineered for demanding construction machinery transmissions. This OEM genuine part converts hydraulic pressure into mechanical torque, directly engaging the transmission’s gear train to propel the vehicle. Positioned within the valve body assembly, the motor regulates fluid flow to the clutch packs, ensuring smooth power delivery under heavy loads. The SKU 4699.170.216 is precision-machined to ZF’s factory tolerances, making it a direct replacement for worn units in wheel loaders, graders, and excavators. When paired with a properly functioning 4699025039 GP25 and 4699101113 HOUSING, this motor restores full transmission responsiveness.
Symptoms of Failure
- Erratic gear engagement or slipping – A failing motor cannot maintain consistent hydraulic pressure, causing the transmission to hesitate or slip when shifting between forward and reverse.
- Hydraulic fluid leaks near the motor housing – Worn seals on the 4699.170.216 allow oil to weep from the motor body, often pooling on the bell housing or dripping onto the ground.
- Reduced machine power under load – When the motor loses internal sealing, the transmission fails to deliver full torque to the wheels, resulting in sluggish acceleration on inclines or during digging operations.
- Unusual whining or grinding noises – Internal bearing wear or cavitation from a failing motor produces high-pitched sounds that intensify with engine RPM.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.170.216 |
| Type | Hydraulic Drive Motor |
| Material | High-strength cast iron body with hardened steel internals |
| Weight | Approx. 8.5 kg (18.7 lbs) |
| Dimensions (L x W x H) | 210 mm x 120 mm x 140 mm |
| OEM Reference | ZF 4699.170.216 (Genuine) |
| Operating Pressure | Up to 250 bar |
| Seal Type | Viton dual-lip |
Compatibility
This motor is designed for ZF’s heavy-duty powershift transmissions commonly found in construction machinery. It is a direct fit for the WG180 and WG200 series, as well as the 4WG200 and 5WG200 variants. The 4699.170.216 also integrates with the 4699102157 INPUT shaft assembly and the 4699103114 OUTPUT flange, ensuring seamless torque transfer. For machines equipped with the WG180, verify that the 4699025039 GP25 pump is in good condition to avoid pressure imbalances.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699025039 | GP25 | Gear pump supplying hydraulic flow to the motor |
| 4699101113 | HOUSING | Encloses the motor and directs fluid passages |
| 4699102157 | INPUT | Input shaft transferring torque from the motor |
| 4699103114 | OUTPUT | Output flange connecting to the driveline |
| 4699109068 | BRAKE PARTS | Brake components for transmission holding |
| 4699301201 | HOUSING | Secondary housing for clutch assembly |
| 4699309202 | HOUSING COVER | Seals the top of the transmission housing |
| 0636101477 | CAP SCREW | Fastener for motor mounting flange |
| 0631302221 | CYLINDRICAL PIN | Alignment pin for precise motor positioning |
| 0501319149 | SCREW PLUG | Seals hydraulic ports on the motor body |
