Overview
The ZF 4108.338.015 RETAINING CLIP is a precision-engineered fastening component designed to secure critical internal assemblies within ZF powershift transmissions. This OEM genuine part, identified by SKU 4108.338.015, functions as a positive-locking axial restraint for shafts, bearings, or gear clusters inside the transmission housing. Without this retaining clip, axial movement of rotating components can lead to misalignment, increased wear, and eventual transmission failure. It is typically installed directly against the 4108101057: HOUSING and the 4108201177: HOUSING to maintain proper end-play tolerances in the gear train.
Symptoms of Failure
- Transmission oil leaks at housing seams: When the retaining clip fatigues or breaks, axial play allows seals to shift, causing fluid to escape past the 4108301304: BEARING COVER.
- Intermittent gear slippage under load: A worn clip cannot hold the shaft in position, resulting in partial disengagement of gear teeth during heavy operation.
- Metallic rattling or knocking from the transmission: Loose components due to a failed clip create audible impact noises, especially during deceleration or gear changes.
- Premature bearing failure: Unrestrained axial movement places side loads on bearings, leading to overheating and spalling within 50–100 hours of operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4108.338.015 |
| Material | Spring steel (DIN 17222), zinc-plated |
| Inner Diameter | 38 mm |
| Outer Diameter | 48 mm |
| Thickness | 2.5 mm |
| Weight | 0.012 kg |
| OEM Reference | ZF 4108.338.015 |
| Installation Torque (adjacent screw) | Refer to 0636302056: SCREW PLUG specs |
Compatibility
This retaining clip is engineered for ZF heavy-duty powershift transmissions commonly found in construction machinery. It is compatible with the following ZF transmission models based on its dimensional class and application:
- ZF WG180 – All series variants (WG180, WG180C)
- ZF WG200 – Standard and high-torque versions
- ZF WG120 – Select configurations using 38mm shaft retention
- ZF 4WG-200 – Four-speed powershift units
Always verify fitment against your transmission’s parts manual. The clip works in conjunction with the 4108301304: BEARING COVER and the 0636302056: SCREW PLUG to complete the retention assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101057 | HOUSING | Main transmission casing; houses gear sets |
| 4108201177 | HOUSING | Secondary housing for clutch packs |
| 0636302056 | SCREW PLUG | Seals oil passages; retains clip in bore |
| 4108301304 | BEARING COVER | Encloses bearing cavity; prevents contamination |
| 4108306173 | GASKET | Seals bearing cover to housing |
| 0750110040 | SHAFT SEAL | Prevents oil leakage at output shaft |
| 6053108155 | CONTROL COVER | Houses valve body; directs hydraulic flow |
| 6053308348 | CONTROL COVER | Alternate control cover for specific models |
| 0636010188 | HEXAGON SCREW | M8 fastener for housing assembly |
| 0636010192 | HEXAGON SCREW | M10 fastener for bearing cover |
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