Overview
The ZF 4108.111.050 POWER TAKE-OFF is a critical OEM genuine component designed to transfer engine power from the transmission to auxiliary hydraulic systems in heavy construction machinery. This PTO unit mounts directly onto the transmission housing, engaging with internal gears to drive pumps for loaders, excavators, and graders. The SKU 4108.111.050 is engineered for high-torque applications, ensuring reliable power extraction without compromising drivetrain integrity. It integrates seamlessly with the main gear cluster, requiring precise alignment with the 4108101068: HOUSING and the 4108201177: HOUSING to maintain proper oil flow and bearing support.
Symptoms of Failure
When the ZF 4108.111.050 Power Take-Off begins to fail, operators may notice intermittent hydraulic power loss during heavy lifting, a classic sign of gear wear or bearing degradation. Another common symptom is oil seepage around the PTO mounting flange, often caused by a compromised seal or gasket, which can be exacerbated by a failing 0636302056: SCREW PLUG that fails to retain pressure. You might also hear grinding or whining noises from the transmission housing when the PTO is engaged, indicating worn internal splines or a loose 4108301304: BEARING COVER. Finally, vibration at idle with the PTO engaged suggests misalignment or a failing bearing assembly, which can lead to catastrophic failure if ignored.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4108.111.050 |
| OEM Reference | ZF 4108.111.050 |
| Material | High-strength alloy steel (case-hardened) |
| Weight | 4.2 kg (9.3 lbs) |
| Overall Length | 185 mm |
| Flange Diameter | 120 mm |
| Input Spline Count | 14-tooth, 2-inch pitch |
| Max Torque Capacity | 650 Nm |
| Operating Temperature | -20°C to 120°C |
Compatibility
This Power Take-Off is primarily compatible with ZF WG180 and WG200 series transmissions, commonly found in wheel loaders and telehandlers. It also fits select WG150 and WG210 models where the PTO mounting pad matches the SAE ‘B’ pattern. For proper installation, always verify the condition of the 4108306173: GASKET and the 0750110040: SHAFT SEAL to prevent contamination. The unit works with both 0636302013: SCREW PLUG and 0636302056: SCREW PLUG for pressure testing ports.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101068 | HOUSING | Encloses PTO gear assembly, provides mounting surface |
| 4108201177 | HOUSING | Secondary housing for output shaft support |
| 0636302056 | SCREW PLUG | Seals oil passages, prevents leakage |
| 4108301304 | BEARING COVER | Retains output bearing, reduces axial play |
| 4108306173 | GASKET | Provides leak-proof seal between housings |
| 0750110040 | SHAFT SEAL | Prevents oil escape along rotating shaft |
| 0636302013 | SCREW PLUG | Alternative plug for drain or test ports |
| 0501309567 | THERMOMETER | Monitors transmission oil temperature |
| 4108338020 | ADAPTER | Converts PTO output to different pump flanges |
| 0635338080 | BALL BEARING | Supports PTO shaft rotation under load |
