Overview
This OEM genuine ZF 4699.103.070 OUTPUT assembly is a critical driveline component engineered for demanding construction machinery applications. Situated at the final drive stage of the transmission, this part transfers rotational torque from the gearbox to the axle or wheel hub, ensuring reliable power delivery under heavy loads. The SKU 4699.103.070 is precision-machined to ZF’s exacting tolerances, providing a direct bolt-on replacement that restores original performance. When paired with the 4699801172: GK10LD gear kit, this output shaft assembly maintains optimal gear mesh alignment, while the 4699101106: HOUSING encloses the rotating assembly to prevent contamination.
Symptoms of Failure
- Oil leaks around the output seal area: A worn 4699.103.070 often damages the sealing surface, causing transmission fluid to weep onto the housing. This is a common long-tail search query for “ZF output shaft oil leak repair.”
- Gear slipping under load: When the output splines or bearing journals wear, the shaft loses positive engagement, leading to intermittent power loss during excavation or lifting operations.
- Abnormal vibration or whining noise: Excessive play in the output bearing race generates a low-frequency hum that intensifies with vehicle speed, often searched as “ZF transmission whining noise when driving.”
- Metal debris in transmission fluid: Flaking from a fatigued output shaft surface contaminates the hydraulic circuit, accelerating wear on the 0501329881: HOUSING COVER and internal seals.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.103.070 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 385 mm |
| Shaft Diameter (bearing journal) | 55 mm |
| Spline Count | 21 involute splines |
| Weight | 8.7 kg (19.2 lbs) |
| OEM Reference | ZF 4699.103.070 |
| Hardness | 58-62 HRC (surface) |
Compatibility
This output shaft is designed for ZF’s heavy-duty powershift transmission series commonly found in wheel loaders, excavators, and telehandlers. It is a direct fit for the WG180, WG200, and WG211 models. Additionally, it is compatible with the 4WG-200 and 5WG-180 variants used in construction machinery from OEMs like Liebherr, Volvo, and Caterpillar. Always verify your transmission serial number before ordering. For a complete rebuild, consider replacing the 0630513065: SNAP RING that secures the output bearing, as this ring often deforms during removal.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699801172 | GK10LD | Gear kit for output reduction |
| 4699101106 | HOUSING | Encloses output shaft assembly |
| 0501329881 | HOUSING COVER | Seals the housing end face |
| 0630513065 | SNAP RING | Retains output bearing |
| 0634306309 | O-RING | Seals housing cover joint |
| 0637885612 | BREATHER | Equalizes housing pressure |
| 0769100082 | TYPE PLATE | Identification label for transmission |
| 4699105091 | TURNTABLE BEARING | Supports rotating output flange |
| 0750118969 | TURNTABLE BEARING | Alternate bearing for heavy loads |
| 0636104257 | CAP SCREW | Fastens housing cover to housing |
