Overview
The ZF 4699.805.041 GK30 is a critical OEM genuine gear cluster assembly designed for heavy-duty construction machinery transmissions. This part functions as the primary power transfer hub within the transmission, converting engine torque into usable rotational force for the drivetrain. Specifically, the GK30 sits in the intermediate shaft section of ZF’s powershift transmissions, ensuring smooth gear engagement under high load conditions. The SKU 4699.805.041 is precision-machined to OEM tolerances, making it a direct replacement for worn or damaged units. When paired with the 4699005032 GK30 assembly, it restores full operational efficiency to your equipment.
Symptoms of Failure
When the ZF 4699.805.041 GK30 begins to fail, operators will notice distinct performance issues. Common failure symptoms include:
- Intermittent gear slipping under load – The transmission may momentarily lose power transfer, especially when climbing grades or carrying heavy payloads.
- Metallic grinding noises from the transmission housing – Worn gear teeth produce a distinct high-pitched whine or grinding sound during acceleration.
- Delayed engagement when shifting – A noticeable lag between moving the shift lever and the transmission responding, often accompanied by harsh clunks.
- Contaminated transmission fluid with metal particles – Checking the oil pan may reveal silver or bronze shavings, indicating gear surface degradation.
These symptoms are common search queries for construction machinery technicians seeking replacement parts for ZF WG-series transmissions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.805.041 |
| Type | GK30 Gear Cluster |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 12.4 kg (27.3 lbs) |
| Outer Diameter | 185 mm |
| Shaft Bore Diameter | 45 mm |
| Number of Teeth | 32 (primary), 28 (secondary) |
| OEM Reference | ZF 4699.805.041 |
| Sealing | Requires 0634303996 O-RING |
Compatibility
This ZF 4699.805.041 GK30 is engineered for use in the following ZF transmission models commonly found in construction machinery:
- ZF WG180 – 6-speed powershift transmission for wheel loaders
- ZF WG200 – Heavy-duty 6-speed transmission for graders and dozers
- ZF WG120 – Compact 4-speed transmission for backhoe loaders
- ZF WG150 – Medium-duty 5-speed transmission for telehandlers
For complete assembly, this gear cluster integrates with the 4699101018 HOUSING, the 4699102051 INPUT shaft, and the 4699103012 OUTPUT shaft to form a fully functional transmission core.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699005032 | GK30 | Complete gear cluster assembly |
| 4699101018 | HOUSING | Transmission casing for gear support |
| 4699102051 | INPUT | Input shaft for torque transfer |
| 4699103012 | OUTPUT | Output shaft for driveline connection |
| 4699105119 | ASSEMBLY PARTS | Hardware kit for gear mounting |
| 4699301051 | HOUSING | Secondary housing component |
| 4699301054 | HOUSING COVER | Protective cover for housing |
| 4699301055 | COVER | Access cover for maintenance |
| 4699301014 | THREAD PROTECTIVE SHIELD | Thread guard for bolt holes |
| 0634303996 | O-RING | Seal for fluid containment |
