Overview
The ZF 2094.009.029 T 7336 L is an OEM genuine part engineered for the demanding environment of construction machinery transmissions. This component functions as a critical hydraulic control element within the valve body assembly, regulating oil flow to clutches and brakes for smooth gear engagement. Specifically, the SKU 2094.009.029 directs pressurized fluid to the forward clutch pack in ZF powershift transmissions. It interfaces directly with the 2094101018: TRANSMISSION HOUSING and the 2094301069: HOUSING, ensuring precise alignment and sealing within the main casing. Without this OEM valve, the transmission cannot maintain proper clutch pressure, leading to operational failure in loaders and graders.
Symptoms of Failure
- Delayed or harsh shifting: When the 2094.009.029 wears, internal spools stick, causing sluggish engagement or jarring shifts during forward-reverse direction changes.
- Transmission overheating under load: A failing valve allows continuous oil bypass, generating excessive heat in the 2094298054: HOUSING and reducing overall cooling efficiency.
- Intermittent loss of drive in forward gears: Worn sealing lands cause pressure drops, making the machine suddenly lose forward motion, especially on inclines.
- Oil contamination in the valve body area: Internal debris from a degraded 2094.009.029 can migrate into the 2094301071: COVER cavity, requiring complete system flushing.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 2094.009.029 / T 7336 L |
| Material | Hardened steel alloy with nitrided surface |
| Weight | 0.85 kg (1.87 lbs) |
| Overall Length | 142 mm |
| Valve Spool Diameter | 18 mm |
| Operating Pressure Range | 12–25 bar (174–362 psi) |
| Seal Type | PTFE backup ring with O-ring groove |
| OEM Reference | ZF Friedrichshafen AG |
Compatibility
This genuine ZF 2094.009.029 valve is primarily designed for the WG180 and WG200 series powershift transmissions used in construction machinery. It also fits select WG150 and WG250 variants where forward clutch modulation is required. The part is a direct replacement for earlier revision T 7336 L units and is compatible with machines from manufacturers such as Volvo, Case, and Caterpillar that utilize ZF drivelines. Always verify the valve bore condition in the 2094101018: TRANSMISSION HOUSING before installation to prevent premature wear.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101018 | TRANSMISSION HOUSING | Main structural casing for gear and valve assembly |
| 2094301069 | HOUSING | Intermediate housing for clutch piston support |
| 2094298054 | HOUSING | Rear housing containing output shaft bearings |
| 2094301071 | COVER | Sealing cover for valve body access port |
| 2094301030 | GASKET | Paper gasket for housing-to-cover interface |
| 0750111371 | SHAFT SEAL | Dynamic seal for rotating output shaft |
| 0634303085 | O-RING | Static seal for hydraulic port connections |
| 0631306670 | CYLINDRICAL PIN | Alignment dowel for housing registration |
| 0636011356 | HEXAGON SCREW | M10 bolt for securing valve body assembly |
| 4475280066 | SCREW PLUG | Oil gallery plug for pressure test port |
