Overview
The ZF 4699.199.012 LOOSE PARTS kit is an OEM genuine assembly component designed for integration within heavy-duty construction machinery transmissions. This specific part functions as a critical retention and sealing element, typically positioned within the clutch pack or planetary gear housing assembly. It ensures precise axial clearance and prevents contamination ingress during high-torque operations. The SKU 4699.199.012 is engineered to match factory tolerances, reducing the risk of premature wear in demanding environments such as excavators, wheel loaders, and graders. When paired with the 4699101093 HOUSING, this loose parts kit forms a sealed boundary that maintains hydraulic pressure integrity.
Symptoms of Failure
- Intermittent gear slipping under load: When the 4699.199.012 components degrade, axial play increases, causing clutch packs to disengage momentarily during heavy lifting or digging cycles.
- Hydraulic oil seepage at housing joints: Worn sealing surfaces within this loose parts kit allow transmission fluid to bypass, often visible as wet streaks near the 0634303936 O-RING interface.
- Abnormal metallic rattling from transmission bell housing: Loose retaining elements within the kit produce a distinct chatter during neutral-to-drive shifts, indicating loss of preload tension.
- Delayed engagement after cold starts: Degraded parts fail to maintain consistent pressure, leading to a 2-3 second lag before the transmission engages forward or reverse.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4699.199.012 |
| Material Composition | Hardened steel alloy with nitrile sealing elements |
| Overall Length | 48.5 mm |
| Outer Diameter | 112.0 mm |
| Weight | 0.34 kg |
| OEM Reference | ZF 4699.199.012 |
| Operating Temperature Range | -40°C to +120°C |
| Hardness Rating | HRC 38-42 |
Compatibility
This OEM genuine part is primarily compatible with ZF WG180, WG200, and WG210 series transmissions commonly installed in construction machinery from manufacturers such as Caterpillar, Volvo, and Komatsu. It also fits select variants of the ZF 4WG-310 and 6WG-250 power shift transmissions. For proper installation, verify that the 4699301175 HOUSING and 4699301041 COVER are free from scoring or corrosion before assembling the 4699.199.012 kit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101093 | HOUSING | Encloses clutch pack and directs oil flow |
| 4699301175 | HOUSING | Secondary housing for planetary gear set |
| 4699301041 | COVER | Seals the transmission end plate assembly |
| 0634303936 | O-RING | Prevents fluid leakage between mating surfaces |
| 0630513203 | SNAP RING | Retains bearing in axial position |
| 0750110302 | SHAFT SEAL | Seals rotating shaft against debris ingress |
| 0630513073 | SNAP RING | Secures gear cluster to shaft |
| 0501319149 | SCREW PLUG | Closes hydraulic test ports |
| 0636302022 | SCREW PLUG | Seals oil drain passage |
| 0634801038 | SEALING RING | Provides static seal under high pressure |
