Overview
The ZF 4699.271.001 ASSEMBLY PARTS is a critical internal component engineered for heavy-duty construction machinery transmissions. This OEM genuine part serves as a precision-machined sub-assembly that facilitates torque transfer and hydraulic pressure regulation within the gear train. Specifically, it integrates with the main shaft housing to ensure proper alignment and load distribution during high-stress operations. The SKU 4699.271.001 is designed to interface directly with the 4699101080 HOUSING and the 0501329881 HOUSING COVER, forming a sealed unit that prevents contamination ingress. Without this assembly, the transmission cannot maintain consistent gear engagement under load.
Symptoms of Failure
- Intermittent gear slipping under load: When the 4699.271.001 assembly wears, you may notice the transmission randomly drops out of gear during excavation or grading operations, particularly when climbing grades.
- Hydraulic pressure fluctuations: A worn assembly causes erratic pressure readings on the diagnostic gauge, often accompanied by delayed engagement when shifting from neutral to drive.
- Metallic debris in transmission fluid: Internal wear generates fine steel particles that appear as glitter in the oil filter or drain pan, indicating the assembly is breaking down.
- Audible whining or grinding noise: A high-pitched whine during deceleration or a grinding sound when shifting under power signals that the assembly bearings or bushings have failed.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4699.271.001 |
| Material | Hardened alloy steel with nitrided surface |
| Weight | 2.4 kg (5.3 lbs) |
| Outer Diameter | 145 mm |
| Inner Diameter | 65 mm |
| Height | 78 mm |
| OEM Reference | ZF 4699.271.001 |
| Sealing Type | Requires 0634306309 O-RING for installation |
| Retention | Secured with 0630513065 SNAP RING |
Compatibility
This assembly is specifically validated for use in ZF WG series powershift transmissions commonly found in wheel loaders, dozers, and excavators. It is a direct fit for the WG180, WG200, and WG210 models. The 4699.271.001 also appears in certain Ecomat 4HP and 6HP series used in mobile construction equipment. Always verify the serial number against your transmission tag before ordering. For proper sealing, pair this part with the 0634306309 O-RING and ensure the 0630513065 SNAP RING is not reused from the old assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101080 | HOUSING | Main structural casing for gear support |
| 0501329881 | HOUSING COVER | Seals the top of the housing assembly |
| 0630513065 | SNAP RING | Retains bearings and shafts in position |
| 0634306309 | O-RING | Provides hydraulic seal between components |
| 0637885612 | BREATHER | Equalizes internal pressure and vents moisture |
| 0501319149 | SCREW PLUG | Seals oil passages during service |
| 0636302022 | SCREW PLUG | Magnetic drain plug for debris collection |
| 0634801038 | SEALING RING | Copper crush washer for leak-proof joints |
| 0730365801 | TYPE PLATE | Identification tag with transmission specs |
| 4699001080 | GK10 | Gasket kit for complete overhaul |
