Overview
The ZF 4143.298.040 CASE is a structural housing component designed for the HL 100 and HL 270 series transmissions. This OEM genuine part encloses the planetary gear set and provides the rigid mounting surface required for torque transfer within the driveline. As a critical casing element, it protects internal rotating assemblies from contamination while maintaining precise gear alignment under heavy loads. The SKU 4143.298.040 is machined from high-strength cast iron to withstand the thermal expansion and vibration inherent in industrial applications. This case interfaces directly with the 4143101025: HOUSING and the 4143301055: HOUSING to form the complete transmission envelope.
Symptoms of Failure
- External oil seepage at mating flanges – When the case distorts or develops micro-cracks, transmission fluid escapes around the gasket surface, leaving visible wet spots on the bell housing.
- Gear engagement hesitation or clunking – A warped case alters bearing preload, causing delayed shifts or metallic noises during acceleration.
- Vibration under load – Cracks in the case wall allow flexing that transmits excessive vibration through the chassis, often misdiagnosed as driveline imbalance.
- Contaminated fluid from debris ingress – A compromised case seal permits dirt and moisture to enter, leading to accelerated wear of internal components like the 0631329135: SPRING PIN.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4143.298.040 |
| Material | Grey cast iron (EN-GJL-250) |
| Overall Length | 320 mm |
| Overall Width | 210 mm |
| Overall Height | 180 mm |
| Weight | 8.7 kg |
| OEM Reference | ZF 4143.298.040 |
| Bolt Hole Pattern | 8 x M12 on 140 mm PCD |
| Sealing Surface | Ground finish, Ra 0.8 µm |
Compatibility
This case is engineered for the ZF HL 100 and HL 270 series transmissions, commonly found in wheel loaders, telehandlers, and industrial tractors. It is also compatible with the WG180, WG200, and WG210 models where the same housing geometry is used. The part accommodates the 0501337904: SPEED SENSOR port and aligns with the dowel pins from the 0631329135: SPRING PIN assembly. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101025 | HOUSING | Primary transmission housing, mates to the case |
| 4143301055 | HOUSING | Rear housing for output shaft support |
| 0631329135 | SPRING PIN | Alignment dowel for case-to-housing fit |
| 0501337904 | SPEED SENSOR | Monitors output shaft RPM |
| 0636101024 | CAP SCREW | Fastener for case mounting |
| 4475280099 | SCREW PLUG | Seals oil drain port |
| 0634303266 | O-RING | Seals between case and housing |
| 0501200072 | VENT VALVE | Equalizes internal pressure |
| 4475280015 | SCREW PLUG | Plug for sensor port |
| 0501217673 | LUBRICATING NIPPLE | Grease fitting for bearing preload |
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