Overview
The ZF 4699.172.005 STEERING PARTS (SKU: 4699.172.005) is a precision-engineered OEM genuine component designed for the steering control assembly within heavy-duty ZF construction machinery transmissions. This part functions as a critical interface between the steering valve and the transmission housing, ensuring precise hydraulic flow for directional control. It sits directly within the main control cluster, where it interacts with the 4699101046 HOUSING to maintain structural integrity under high-pressure operation. As an OEM genuine unit, it guarantees exact fitment and durability in demanding off-highway applications.
Symptoms of Failure
When the ZF 4699.172.005 wears out, operators may notice these specific failure indicators:
- Steering drift or delayed response: The part’s internal sealing surfaces degrade, causing hydraulic fluid to bypass and resulting in uncommanded steering movement or sluggish reaction times.
- External oil seepage at the steering housing joint: Worn mating faces allow transmission fluid to escape, often visible as drips near the 4699301109 HOUSING interface.
- Erratic gear engagement under load: Loss of hydraulic pressure from a failing steering part leads to intermittent clutch pack engagement, particularly during low-speed maneuvering.
- Increased operating noise from the steering circuit: Cavitation or aeration caused by a compromised seal produces a whining or grinding sound from the transmission pump area.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4699.172.005 |
| Material | High-strength ductile iron (GJS-500-7) |
| Overall Length | 142 mm |
| Outer Diameter | 85 mm |
| Weight | 1.85 kg |
| OEM Reference | ZF 4699.172.005 |
| Seal Type | Integrated PTFE lip seal |
| Operating Pressure | 25 bar (max) |
Compatibility
This steering part is engineered for ZF’s WG series powershift transmissions commonly used in wheel loaders, graders, and telehandlers. It is directly compatible with the WG180, WG200, and WG211 models. It also fits select WG150 and WG310 variants where the steering control module shares the same mounting pattern. For proper installation, it must be paired with the 4699301017 BEARING COVER and the 4699301085 COVER to ensure correct axial preload and contamination protection.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101046 | HOUSING | Encloses the steering valve assembly |
| 4699301109 | HOUSING | Secondary housing for hydraulic passages |
| 4699301017 | BEARING COVER | Secures steering shaft bearings |
| 4699301085 | COVER | Protects steering control cavity |
| 4699301014 | THREAD PROTECTIVE SHIELD | Prevents thread damage during assembly |
| 0634303141 | O-RING | Seals hydraulic fluid connections |
| 0734307407 | PROTECTION CAP | Covers exposed steering ports |
| 0634309600 | SHAFT SEAL | Prevents oil leakage along the steering shaft |
| 0637885612 | BREATHER | Equalizes pressure in the steering housing |
| 0636102023 | CAP SCREW | Fastens steering components to the housing |
