Overview
The ZF 4699.103.104 OUTPUT assembly is a critical driveline component engineered for heavy-duty construction machinery transmissions. This OEM genuine part serves as the primary power take-off point, transferring rotational force from the transmission’s planetary gearset to the final drive or axle. Positioned at the rear of the transmission housing, the output shaft and its integrated flange ensure precise torque delivery under extreme loads. The SKU 4699.103.104 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in demanding environments such as wheel loaders, graders, and dump trucks.
Symptoms of Failure
- Oil leaks around the output seal: Worn bearings or a damaged flange face on the 4699.103.104 can cause transmission fluid to seep past the seal, leaving puddles under the machine.
- Gear slipping or delayed engagement: Excessive play in the output shaft splines or bearing race leads to intermittent power loss, especially under load during uphill travel or digging operations.
- Vibration and driveline noise: A failing output assembly produces a rhythmic clunking or whining sound that intensifies with speed, indicating worn gear teeth or bearing degradation.
- Metal debris in transmission fluid: Flaking or spalling on the output shaft’s hardened surface contaminates the oil, visible as glitter during routine drain intervals.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.103.104 |
| OEM Reference | ZF 4699.103.104 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 8.7 kg (19.2 lbs) |
| Flange Diameter | 180 mm |
| Spline Count | 24 involute splines |
| Max Torque Capacity | 3,200 Nm |
| Bearing Type | Double-row tapered roller |
Compatibility
This output assembly is designed for ZF’s WG series powershift transmissions commonly found in construction machinery. It directly replaces the original part in the following models: WG180, WG200, WG210, and WG250. The 4699.103.104 is also compatible with certain ErgoPower and Ecolife variants used in off-highway applications. Always verify the transmission serial number before installation to ensure correct spline engagement and flange bolt pattern.
During replacement, the output shaft interfaces directly with the 4699101070: HOUSING and the 4699301146: HOUSING to maintain proper alignment. The 4699309085: HOUSING COVER seals the assembly, while 0636101411: CAP SCREW fasteners secure the flange to the output hub. For a complete rebuild, technicians often pair this part with the 0631302212: CYLINDRICAL PIN for precise dowel alignment and the 0634801038: SEALING RING to prevent fluid bypass. Additional supporting components include the 0501319149: SCREW PLUG, 0637885613: BREATHER, 0730365801: TYPE PLATE, and the 4699102105: INPUT assembly for a full transmission overhaul.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101070 | HOUSING | Encloses the output shaft and bearings |
| 4699301146 | HOUSING | Intermediate support housing for gear cluster |
| 4699309085 | HOUSING COVER | Seals the rear of the transmission case |
| 0636101411 | CAP SCREW | Fastens output flange to shaft |
| 0631302212 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634801038 | SEALING RING | Prevents oil leakage at shaft exit |
| 0501319149 | SCREW PLUG | Closes oil passages in the housing |
| 0637885613 | BREATHER | Equalizes internal pressure |
| 0730365801 | TYPE PLATE | Identifies transmission model and serial |
| 4699102105 | INPUT | Input shaft assembly for torque converter |
