Overview
The ZF 4699.270.035 ASSEMBLY PARTS is a critical internal component engineered for heavy-duty construction machinery transmissions. This OEM genuine part functions as a precision-machined sub-assembly within the gear train, ensuring smooth torque transfer and reliable clutch engagement under extreme loads. The SKU 4699.270.035 sits directly in the main shaft assembly area, interfacing with the HOUSING to maintain correct gear alignment. Designed to ZF’s original specifications, this part reduces internal friction and prevents premature wear in high-cycle operations such as excavators and wheel loaders.
Symptoms of Failure
- Intermittent gear slipping under load: When the 4699.270.035 assembly wears, the transmission may lose torque during heavy digging or lifting, causing sudden power loss.
- Metallic grinding noise from the transmission: Worn assembly parts create metal-on-metal contact, producing a distinct grinding sound that worsens with higher RPMs.
- Delayed engagement when shifting: Operators may notice a 2-3 second lag when moving from neutral to drive, indicating the assembly is not seating properly against the INPUT shaft.
- Contaminated transmission fluid with metal particles: Degradation of this assembly releases fine metallic debris into the oil, visible during routine fluid changes.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4699.270.035 |
| Material | Case-hardened alloy steel (16MnCr5) |
| Weight | 1.85 kg (4.08 lbs) |
| Outer Diameter | 112 mm |
| Inner Diameter | 45 mm |
| Height | 38 mm |
| OEM Reference | ZF 4699.270.035 |
| Surface Finish | Ground and polished (Ra 0.4 µm) |
Compatibility
This assembly part is compatible with ZF WG series transmissions commonly found in construction machinery. It directly fits the WG180, WG200, and WG210 models used in Caterpillar, Liebherr, and Volvo heavy equipment. The 4699.270.035 works in conjunction with the GK10LD clutch pack and the OUTPUT shaft assembly. Always verify your transmission model number before installation, as variations exist in older WG160 units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699001185 | GK10LD | Clutch pack for gear engagement |
| 4699101108 | HOUSING | Encloses and aligns the gear assembly |
| 4699102172 | INPUT | Transfers engine power into the transmission |
| 4699103057 | OUTPUT | Delivers torque to the driveline |
| 4699105096 | TURNTABLE BEARING | Supports rotational load in the gear train |
| 0501329881 | HOUSING COVER | Seals the transmission housing |
| 0630513065 | SNAP RING | Secures components on the shaft |
| 0634306309 | O-RING | Prevents fluid leaks at joints |
| 0637885612 | BREATHER | Equalizes internal pressure |
| 0769100082 | TYPE PLATE | Identifies transmission model and specs |
