Overview
The ZF 4699.170.287 MOTOR is a critical hydraulic drive component engineered for precise power delivery within ZF construction machinery transmissions. This OEM genuine part converts hydraulic pressure into rotational force, directly engaging the transmission’s gear train to modulate vehicle speed and torque output. Positioned between the pump and the planetary gearset, the SKU 4699.170.287 ensures smooth start-up and controlled deceleration under heavy loads. For optimal assembly integrity, this motor is frequently installed alongside the 4699008051 GK16 gear kit, which synchronizes rotational motion within the same housing.
Symptoms of Failure
- Erratic gear engagement or slipping: When the 4699.170.287 motor wears, hydraulic pressure drops, causing delayed or incomplete gear shifts—especially noticeable during low-speed maneuvering.
- Hydraulic oil leaks near the motor housing: Worn seals or internal cracks allow transmission fluid to escape, often pooling around the 4699101181 HOUSING interface.
- Unusual whining or grinding noises: Metal fatigue or contamination within the motor produces high-pitched sounds during operation, indicating imminent failure.
- Reduced machine power under load: A failing motor cannot maintain adequate pressure, leading to sluggish bucket or blade response in excavators and loaders.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.170.287 |
| Type | Hydraulic Drive Motor |
| Material | Hardened Steel Alloy / Cast Iron |
| Weight | 12.4 kg (27.3 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 120 mm |
| OEM Reference | ZF 4699.170.287 |
| Operating Pressure | 250 bar (max) |
| Seal Type | NBR / Viton |
Compatibility
This motor is designed for ZF WG-series powershift transmissions commonly used in construction machinery. It directly fits the WG180, WG200, and WG210 models, as well as select variants of the WG150 series. The 4699.170.287 motor interfaces with the 4699102193 INPUT shaft assembly and the 4699103131 OUTPUT flange, ensuring seamless torque transfer. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699008051 | GK16 | Gear kit for torque synchronization |
| 4699101181 | HOUSING | Encloses motor and gear assembly |
| 4699102193 | INPUT | Input shaft connecting to pump |
| 4699103131 | OUTPUT | Output flange to transmission |
| 4699105132 | HOUSING TOP PART | Upper housing cover |
| 4699301191 | HOUSING | Secondary housing component |
| 4699301041 | COVER | Protective cover for motor |
| 0634303936 | O-RING | Seals hydraulic fluid passages |
| 0630513203 | SNAP RING | Retains bearings in housing |
| 0750110302 | SHAFT SEAL | Prevents oil leakage at shaft |
