Overview
The ZF 4699.170.167 MOTOR is a critical hydraulic drive component engineered for integration within ZF heavy-duty powershift transmissions used in construction machinery. This OEM genuine part converts hydraulic pressure into mechanical torque, directly engaging the transmission’s clutch packs to enable smooth gear shifts and machine mobility. Positioned on the valve body or clutch housing assembly, the 4699.170.167 motor regulates oil flow to specific clutch circuits. The SKU 4699.170.167 is precision-machined to OEM tolerances, ensuring reliable actuation under extreme loads and temperatures. When paired with the 4699100085: BASIC PARTS kit, this motor forms the core of the transmission’s hydraulic control system.
Symptoms of Failure
- Delayed or erratic gear engagement — Worn internal seals cause pressure loss, leading to hesitation when shifting from neutral to forward or reverse. This is a common search query for “ZF transmission slow to engage.”
- Hydraulic oil leaks around the motor housing — Degraded O-rings or a cracked motor body allow transmission fluid to seep out, often visible as drips near the valve block. Technicians search for “ZF motor oil leak repair.”
- Intermittent clutch slip under load — A failing motor cannot maintain consistent pressure, causing the clutch packs to slip during heavy digging or lifting operations. This symptom is frequently queried as “construction machine transmission slipping.”
- Unusual whining or grinding noise — Internal bearing wear or contamination produces audible noise when the motor is actuated, indicating imminent failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.170.167 |
| Type | Hydraulic Motor (Gear or Piston) |
| Material | Hardened Steel / Aluminum Alloy Housing |
| Weight | ~2.8 kg (6.2 lbs) |
| Dimensions (L x W x H) | 180 mm x 95 mm x 85 mm |
| OEM Reference | ZF 4699.170.167 |
| Operating Pressure | 18–25 bar (260–360 psi) |
| Seal Type | NBR / Viton O-Rings |
Compatibility
This motor is designed for ZF powershift transmissions commonly found in wheel loaders, dozers, and telehandlers. It is compatible with the following ZF models: WG180, WG200, WG211, and WG310 series. The 4699.170.167 motor interfaces directly with the 4699300139: HOUSING and the 4699300156: GEAR SHAFT to transmit torque. For complete clutch pack assembly, it works in conjunction with the 4699300127: PLANET CARRIER. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699100085 | BASIC PARTS | Seal and gasket kit for motor assembly |
| 4699300139 | HOUSING | Encloses motor and clutch components |
| 4699300156 | GEAR SHAFT | Transfers rotational force from motor |
| 4699300127 | PLANET CARRIER | Supports planetary gear set |
| 4699300098 | INNER DISK CARRIER | Holds clutch friction disks |
| 4699200011 | RING GEAR | Outer gear for planetary reduction |
| 4699300152 | TOOTHED DISC | Clutch plate for torque transfer |
| 4699300153 | RING GEAR | Secondary ring gear for dual-planet sets |
| 4699300154 | RING | Retaining ring for shaft assembly |
| 4699300128 | PLANETARY GEAR | Individual gear within planet carrier |
