Overview
The ZF 6073.015.507 is an OEM genuine hydraulic control valve assembly, a critical component within the valve body of ZF’s heavy-duty powershift transmissions. This part precisely directs pressurized oil to engage specific clutch packs, enabling seamless gear changes under high torque loads in construction machinery. As a factory-sealed unit, the SKU 6073.015.507 guarantees exact OEM tolerances for spool valve clearance and spring tension, ensuring consistent shift timing. Without this valve, the transmission cannot modulate hydraulic pressure, leading to immediate drivability loss in loaders, dozers, and graders.
Symptoms of Failure
When the ZF 6073.015.507 begins to degrade, operators will notice distinct operational issues. These failure modes often trigger diagnostic trouble codes in electronic control units.
- Delayed or harsh engagement when shifting from neutral to forward: Worn spool valves cause sluggish oil flow, creating a noticeable lag before the machine moves. This is a common symptom of internal valve bore wear.
- Transmission overheating under light load: A sticking valve can cause constant clutch slip, generating excessive heat. Operators may see temperature gauges spike during normal grading or loading cycles.
- Intermittent loss of a specific gear range: If the valve fails to hold pressure, a particular gear (e.g., 2nd or 3rd) will drop out under load, forcing the operator to shift to a different range to continue working.
- Hydraulic oil contamination with metallic debris: As the valve spool wears against the bore, fine metal particles enter the oil circuit. This is often detected during routine oil analysis or when changing the filter.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number / SKU | 6073.015.507 |
| OEM Reference | ZF 6073.015.507 (Genuine) |
| Material | Hardened steel spool with anodized aluminum body |
| Weight | 1.45 kg (3.2 lbs) |
| Overall Length | 185 mm |
| Valve Bore Diameter | 18 mm |
| Operating Pressure Range | 12–25 bar (174–362 psi) |
| Seal Type | PTFE energized seals (pre-installed) |
Compatibility
This genuine ZF valve assembly is engineered for use in several heavy-duty transmission families. It is a direct replacement for the hydraulic control section in the following models:
- ZF WG180 (all series variants)
- ZF WG200 (including WG200-1 and WG200-2)
- ZF WG120 (select applications with 6-speed configuration)
- ZF Ecomat 4HP (early generation models with hydraulic shift control)
Always verify the transmission serial number against the OEM parts catalog before installation. This part is not compatible with electronic shift-by-wire systems without a separate valve body adapter.
