Overview
The ZF 2095.346.035 PRESSURE PIN is a precision-engineered component designed for the hydraulic control systems within ZF WG100, WG130, and WG131 transmissions. This OEM genuine part acts as a critical interface between the valve body and clutch pack assemblies, ensuring accurate oil pressure modulation during gear shifts. The SKU 2095.346.035 serves as a load-bearing element that transfers spring force to the piston, maintaining consistent clutch engagement pressure. Without this pin, the transmission cannot achieve the precise hydraulic balance required for smooth power delivery under heavy industrial loads.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn pressure pin causes erratic clutch pack pressure, leading to noticeable hesitation or jarring shifts when accelerating from a stop.
- Intermittent oil pressure loss: Internal wear on the pin’s contact surface allows hydraulic fluid to bypass the valve, resulting in fluctuating pressure readings and eventual slipping under load.
- Audible clicking or tapping from the valve body: As the pin loses its precise fit, it may rattle against the bore, producing a metallic noise that worsens with transmission temperature changes.
- Transmission overheating: Inefficient clutch modulation forces the system to work harder, generating excess heat that can degrade fluid and accelerate wear on components like the 5838109007 DIFFERENTIAL.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | ZF 2095.346.035 |
| Material | Case-hardened alloy steel (SAE 8620 equivalent) |
| Overall Length | 38.5 mm ±0.1 mm |
| Outer Diameter | 12.0 mm ±0.05 mm |
| Weight | 22 grams |
| Surface Hardness | 58-62 HRC |
| OEM Reference | 2095.346.035 (ZF genuine) |
| Thread Pitch | N/A (press-fit design) |
Compatibility
This pressure pin is engineered specifically for ZF’s WG-series industrial transmissions. It is a direct replacement for the following models:
- ZF WG100 (all variants)
- ZF WG130 (including WG131)
- ZF WG180 (early production runs with compatible valve body)
- ZF WG200 (limited to specific hydraulic control revisions)
Always verify your transmission’s valve body casting number before installation. The pin works in conjunction with the 0750117075 TAPER ROLLER BEARING and 2095209019 DIFFERENTIAL to maintain drivetrain integrity. For secure mounting, pair it with the 0631329086 SPRING PIN during reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109007 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating shaft loads |
| 2095209019 | DIFFERENTIAL | Secondary torque distribution unit |
| 0631329086 | SPRING PIN | Secures pressure pin in bore |
| 5838300817 | THRUST WASHER | Reduces axial friction in clutch pack |
| 5838300682 | DIFFERENTIAL AXLE | Transfers rotational force to wheels |
| 5838300811 | THRUST WASHER | Secondary axial load bearing |
| 5841302064 | THRUST WASHER | High-load axial support |
| 5838300137 | OUTER CLUTCH DISK | Friction surface for gear engagement |
| 5838300138 | INNER CLUTCH DISK | Steel reaction plate for clutch pack |
