Overview
The ZF 4699.172.007 STEERING PARTS component is a precision-engineered OEM genuine part designed for the steering control assembly within heavy-duty ZF construction machinery transmissions. This part functions as a critical interface between the steering column and the hydraulic control valve, ensuring precise directional input is transmitted to the transmission’s clutch packs. The SKU 4699.172.007 sits directly within the steering housing assembly, where it interacts with the 4699101024: HOUSING to maintain alignment and pressure integrity. As an OEM genuine part, it guarantees factory-specified tolerances for long service life in demanding environments like excavators and wheel loaders.
Symptoms of Failure
- Erratic steering response or delayed engagement — When the 4699.172.007 wears, operators may notice a lag between steering wheel input and machine response, often accompanied by a “spongy” feel in the controls.
- Hydraulic fluid seepage around the steering housing — Degraded seals within this part can cause oil leaks at the junction with the 4699301077: HOUSING, leaving visible puddles under the machine after shutdown.
- Unusual whining or grinding noises during turns — Worn internal bushings or scoring on the part surface creates metallic sounds, particularly at low engine RPMs during tight maneuvers.
- Increased steering effort at low speeds — A failing component forces the hydraulic pump to work harder, causing the steering wheel to feel heavy or stiff, especially in cold weather conditions.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4699.172.007 |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Overall Length | 142 mm (5.59 in) |
| Outer Diameter | 48 mm (1.89 in) |
| Weight | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4699.172.007 |
| Seal Type | Integrated PTFE lip seal |
| Operating Temperature Range | -20°C to +120°C (-4°F to +248°F) |
Compatibility
This steering part is engineered for ZF WG series transmissions commonly found in construction machinery. It is directly compatible with the following ZF transmission models: WG180, WG200, WG210, and WG240. These transmissions are used in articulated dump trucks, graders, and telescopic handlers from manufacturers such as Caterpillar, Volvo, and JCB. For proper installation, the 4699.172.007 must be paired with the 4699301017: BEARING COVER and the 4699301085: COVER to ensure correct axial clearance and contamination protection.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101024 | HOUSING | Encloses the steering valve assembly |
| 4699301077 | HOUSING | Secondary housing for seal retention |
| 4699301017 | BEARING COVER | Secures input shaft bearings |
| 4699301085 | COVER | Protects internal components from debris |
| 4699301014 | THREAD PROTECTIVE SHIELD | Prevents thread damage during assembly |
| 0634303141 | O-RING | Provides static seal between housings |
| 0734307407 | PROTECTION CAP | Covers exposed ports during transport |
| 0634319161 | SHAFT SEAL | Prevents oil leakage along rotating shaft |
| 0637885612 | BREATHER | Equalizes pressure inside the housing |
| 0636102023 | CAP SCREW | Fastens cover to housing assembly |
