Overview
The ZF 4699.172.031 STEERING PARTS component is a critical OEM genuine element engineered for precise hydraulic control within ZF construction machinery transmissions. This part functions as a steering control valve or actuator, managing oil flow to the steering system to ensure responsive maneuverability in heavy equipment. Positioned within the transmission housing assembly, it directly interfaces with the 4699101079: HOUSING and the 0501329881: HOUSING COVER to maintain sealed, high-pressure operation. The SKU 4699.172.031 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in demanding environments.
Symptoms of Failure
- Steering drift or unresponsiveness: When the 4699.172.031 wears internally, operators may notice the machine pulling to one side or delayed steering response, especially under load.
- Hydraulic oil leaks around the transmission: A degraded seal or cracked valve body allows fluid to escape, often visible near the 0634306309: O-RING interface, leading to low oil levels and overheating.
- Erratic steering effort: Worn internal spools cause inconsistent hydraulic pressure, making the steering wheel feel either too stiff or suddenly loose during operation.
- Contaminated transmission fluid: Metal particles from a failing steering part can circulate through the system, accelerating wear on the 0637885612: BREATHER and other components.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.172.031 |
| OEM Reference | ZF 4699.172.031 |
| Material | High-strength cast iron with hardened steel spool |
| Weight | Approx. 2.8 kg (6.2 lbs) |
| Dimensions (L x W x H) | 180 mm x 95 mm x 75 mm |
| Sealing Type | Integrated O-ring groove (compatible with 0634306309) |
| Operating Pressure | Up to 250 bar |
| Temperature Range | -20°C to +120°C |
Compatibility
This steering part is designed for ZF WG series transmissions commonly used in construction machinery, including the WG180, WG200, and WG210 models. It also fits select variants of the ZF 4WG-200 and 5WG-300 series. Always verify the specific transmission serial number and consult the 4699001070: GK10 gear kit compatibility chart for exact fitment. The part integrates with the 4699102158: INPUT shaft assembly to complete the steering circuit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101079 | HOUSING | Encloses and supports steering valve assembly |
| 0501329881 | HOUSING COVER | Seals the housing and retains internal components |
| 0634306309 | O-RING | Provides leak-proof seal between housing and cover |
| 0637885612 | BREATHER | Equalizes pressure and vents contaminants |
| 0501319149 | SCREW PLUG | Seals hydraulic ports during maintenance |
| 0636302022 | SCREW PLUG | Alternative port plug for different thread sizes |
| 0634801038 | SEALING RING | Prevents leaks at threaded connections |
| 0730365801 | TYPE PLATE | Identification label for transmission model |
| 4699001070 | GK10 | Gear kit for transmission rebuild |
| 4699102158 | INPUT | Input shaft assembly for power transfer |
