Overview
The ZF 2095.078.013 T 7140 is an OEM genuine hydraulic control valve assembly, a critical component within the electro-hydraulic control system of heavy-duty ZF transmissions. This part, identified by the SKU 2095.078.013, governs the precise flow of transmission fluid to modulate clutch engagement and gear shifts. Positioned directly on the transmission valve body, it acts as the central command interface between the transmission control unit (TCU) and the mechanical clutches. For construction machinery applications, this valve ensures the high torque demands of loaders, graders, and dump trucks are met with smooth, reliable power delivery under extreme stress.
Symptoms of Failure
When the ZF 2095.078.013 begins to degrade, operators will notice distinct operational anomalies. Recognizing these signs early can prevent catastrophic transmission damage.
- Erratic or harsh gear engagement: The machine may lurch violently when shifting from neutral to drive or reverse, indicating the valve is failing to modulate hydraulic pressure correctly.
- Delayed shift response (shift flare): A noticeable lag between moving the shifter and the gear actually engaging, often accompanied by a momentary engine RPM spike, points to internal leakage within the valve spool.
- Intermittent loss of forward or reverse: The transmission may suddenly fail to engage a specific direction, particularly under heavy load, due to a stuck or worn valve piston.
- Contaminated transmission fluid with metallic debris: If the valve body suffers from excessive wear, fine metallic particles can enter the hydraulic circuit, accelerating wear on other components like the torque converter.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 2095.078.013 |
| OEM Reference | ZF T 7140 |
| Component Type | Hydraulic Control Valve Assembly |
| Material | High-Grade Aluminum Alloy (Housing) / Hardened Steel (Spool) |
| Weight (approx.) | 3.2 kg (7.1 lbs) |
| Dimensions (L x W x H) | 220 mm x 140 mm x 95 mm |
| Operating Pressure Range | 12 – 25 bar |
| Seal Type | NBR (Nitrile) O-Rings |
Compatibility
This genuine ZF valve assembly is engineered for the WG and ECOMAT series of powershift transmissions commonly found in construction equipment. Based on its design and the T 7140 reference, it is a direct fit for the following models:
- ZF WG 180 (6-speed powershift)
- ZF WG 200 (6-speed powershift)
- ZF Ecomat 4 HP 590 (4-speed automatic)
- ZF Ecomat 5 HP 600 (5-speed automatic)
Always verify your transmission serial number against the OEM parts catalog to ensure correct fitment. This part is not interchangeable with older mechanical valve bodies used in pre-2000 models.
