Overview
The ZF 4108.201.177 HOUSING is a critical structural component within the final drive assembly of heavy-duty construction machinery transmissions. This OEM genuine part serves as the primary enclosure that supports the planetary gear sets, bearings, and shafts, ensuring precise alignment under extreme torque loads. The SKU 4108.201.177 is specifically designed to withstand high-pressure lubrication systems and mechanical stress in ZF power shift transmissions. As the central housing, it interfaces directly with the 4108101112: HOUSING to form a sealed unit that protects internal components from contamination.
Symptoms of Failure
When the ZF 4108.201.177 HOUSING begins to degrade, operators typically notice these specific failure indicators:
- Transmission oil leaks at the housing seam – Cracks or porosity in the casting allow hydraulic fluid to escape, often visible as drips near the axle connection.
- Abnormal gear whine or grinding noises – Warping of the housing bore causes misalignment of the 4108302099: PLANET CARRIER, leading to uneven gear contact.
- Intermittent power loss during heavy loads – Distortion of the housing face reduces clamping force on the 0636302056: SCREW PLUG and gasket surfaces, causing pressure drops.
- Metallic debris in transmission fluid – Internal fretting of the housing bore releases aluminum or iron particles into the oil system.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4108.201.177 |
| Material | High-grade aluminum alloy (EN AC-42100) |
| Weight | 8.7 kg (19.2 lbs) |
| Overall Dimensions | 320 mm x 280 mm x 145 mm |
| Bore Diameter (Main) | 120.00 mm ±0.05 mm |
| Bolt Hole Pattern | 12x M12 on 260 mm PCD |
| OEM Reference | ZF 4108.201.177 |
| Surface Treatment | Black anodized corrosion protection |
Compatibility
This housing is engineered for ZF WG-series powershift transmissions commonly used in wheel loaders, graders, and dozers. Verified compatible models include:
- ZF WG180 – All variants (WG180, WG180/II)
- ZF WG200 – Series 2 and 3 configurations
- ZF 4WG-200 – Four-speed versions with torque converter
- ZF 6WG-200 – Six-speed heavy-duty applications
Installation requires simultaneous replacement of the 4108306173: GASKET and 4108301304: BEARING COVER to maintain proper preload and sealing integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101112 | HOUSING | Mating half of the transmission case assembly |
| 0636302056 | SCREW PLUG | Seals oil passages and inspection ports |
| 4108301304 | BEARING COVER | Retains output shaft bearing in housing bore |
| 4108306173 | GASKET | Prevents fluid leakage between housing faces |
| 0750110040 | SHAFT SEAL | Dynamic seal for rotating output shaft |
| 4108102042 | INPUT | Torque input shaft assembly |
| 4108302099 | PLANET CARRIER | Holds planetary gears for speed reduction |
| 4108302007 | BEARINGSHEET | Shim pack for bearing preload adjustment |
| 0635332196 | BALL BEARING | Supports rotating shaft within housing |
| 0730105878 | THRUST WASHER | Controls axial clearance in gear train |
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