Overview
The ZF 4699.170.168 MOTOR is a critical hydraulic drive component engineered for precision power delivery within ZF construction machinery transmissions. This OEM genuine part converts hydraulic pressure into mechanical torque, directly engaging the transmission’s gear train to control vehicle propulsion and auxiliary functions. Positioned at the interface between the hydraulic system and the driveline, the SKU 4699.170.168 ensures seamless energy transfer for demanding off-road applications. When paired with the 4699025150: GP25, this motor maintains consistent rotational force, while the 4699101138: HOUSING provides structural integrity for the assembly. Its robust design withstands high-pressure cycles in excavators, loaders, and graders.
Symptoms of Failure
- Erratic motor speed or stalling under load: Worn internal seals or bearing surfaces cause inconsistent hydraulic flow, leading to “ZF transmission motor surging” or sudden power loss during heavy lifting.
- External hydraulic fluid seepage: Degraded shaft seals or housing cracks result in “ZF motor oil leaks near transmission housing,” visible as drips or wet spots around the motor mounting flange.
- Abnormal grinding or whining noises: Metal-to-metal contact from failed bushings produces “ZF construction machinery motor whine” that intensifies with RPM changes.
- Delayed engagement or gear slipping: Insufficient torque transfer from a failing motor mimics “transmission slipping in ZF WG series,” often misdiagnosed as clutch wear.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.170.168 |
| Type | Hydraulic Drive Motor |
| Material | High-tensile cast iron housing with hardened steel internals |
| Weight | 12.4 kg (27.3 lbs) |
| Overall Length | 285 mm |
| Mounting Flange Diameter | 180 mm |
| Shaft Spline Count | 14-tooth involute spline |
| Max Operating Pressure | 350 bar (5,076 psi) |
| OEM Reference | ZF 4699.170.168 |
Compatibility
This motor is engineered for ZF’s WG series powershift transmissions commonly used in construction machinery. It directly fits the WG180 and WG200 models, which power wheel loaders and telehandlers. The part also integrates with the WG160 and WG210 series when used with the correct 4699102106: INPUT shaft adapter. For output-side connections, the 4699103117: OUTPUT flange ensures proper torque transfer. Always verify housing alignment using the 4699301218: HOUSING and 4699301224: HOUSING COVER for complete assembly integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699025150 | GP25 | Gear pump supplying hydraulic flow to the motor |
| 4699101138 | HOUSING | Main transmission casing enclosing the motor assembly |
| 4699102106 | INPUT | Input shaft connecting motor to transmission gear train |
| 4699103117 | OUTPUT | Output flange transferring torque to the driveline |
| 4699301218 | HOUSING | Secondary housing for motor support |
| 4699301224 | HOUSING COVER | Protective cover for motor housing access |
| 0636101411 | CAP SCREW | Fastener securing motor to transmission housing |
| 0631302072 | CYLINDRICAL PIN | Alignment pin for precise motor positioning |
| 0636302013 | SCREW PLUG | Sealing plug for hydraulic port access |
| 0501331653 | SCREW PLUG | Drain plug for motor cavity maintenance |
