Overview
The ZF 4108.020.101 PLM 7 is an OEM genuine part engineered for the clutch pack assembly within heavy-duty ZF powershift transmissions. This component functions as a critical pressure plate or reaction plate, providing the necessary clamping surface for clutch discs to engage and disengage smoothly under high torque loads. Designed for construction machinery applications, the SKU 4108.020.101 ensures precise hydraulic force distribution during gear shifts. It is typically mounted inside the transmission housing, working in direct conjunction with the 4108101158: HOUSING to maintain structural alignment and oil flow integrity.
Symptoms of Failure
- Delayed gear engagement or clutch slipping under load: When the PLM 7 plate surface wears, it loses clamping force, causing the transmission to hesitate or slip during acceleration on construction sites.
- Erratic shifting and harsh engagement: Warping or scoring of the 4108.020.101 plate leads to uneven pressure distribution, resulting in jarring shifts that can damage the 0501215907: MOTOR assembly.
- Metallic debris in transmission oil: Friction material from a degraded PLM 7 plate contaminates the hydraulic circuit, often requiring replacement of the 0501320268: COVER and associated seals.
- Overheating transmission fluid: Excessive slippage caused by a worn plate generates abnormal heat, accelerating wear on the 0735370298: ROLLER BEARING and adjacent components.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4108.020.101 |
| Designation | PLM 7 (Pressure Plate) |
| Material | High-carbon steel with hardened friction surface |
| Outer Diameter | 210 mm (estimated) |
| Inner Diameter | 140 mm (estimated) |
| Thickness | 6.5 mm (estimated) |
| Weight | 1.2 kg (estimated) |
| OEM Reference | ZF 4108.020.101 |
| Surface Finish | Ground and polished |
Compatibility
This OEM genuine part is compatible with ZF WG180, WG200, and WG211 series powershift transmissions commonly used in wheel loaders, dozers, and graders. It also fits select ZF 4WG-200 and 6WG-200 variants. Always verify the part number 4108.020.101 against your transmission’s parts manual. For complete clutch pack rebuilds, consider pairing this plate with the 0501317874: HOUSING and 0501317875: ROLLER for optimal performance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101158 | HOUSING | Encloses clutch pack and directs oil flow |
| 0501215907 | MOTOR | Hydraulic actuator for clutch engagement |
| 0501320268 | COVER | Seals clutch cavity and retains pressure |
| 0735370298 | ROLLER BEARING | Supports rotating clutch drum |
| 0501317874 | HOUSING | Secondary housing for multi-plate packs |
| 0501317875 | ROLLER | Reduces friction in shift mechanism |
| 0501213227 | PISTON | Applies hydraulic force to clutch plates |
| 0501317876 | COMPRESSION SPRING | Returns piston to neutral position |
| 0501314823 | BUSH | Guides shaft through clutch assembly |
| 0501314929 | CAM DISC | Controls shift timing and sequencing |
