Overview
The ZF 0501.215.601 OIL LEVEL GAGE is a precision diagnostic component engineered for heavy-duty construction machinery transmissions. This OEM genuine part provides a direct visual indication of lubricant volume within the transmission sump, enabling operators to verify proper oil levels before and during operation. Installed into the side of the TRANSMISSION HOUSING, the gage allows for rapid fluid checks without disassembly. The SKU 0501.215.601 is specifically calibrated to ZF’s factory tolerances, ensuring accurate readings that prevent both overfilling and under-lubrication—two conditions that can lead to premature gear wear or overheating in demanding off-highway applications.
Symptoms of Failure
- Oil leaks around the gage window: A cracked or degraded sealing surface on the 0501.215.601 allows transmission fluid to weep out, leaving visible drips on the housing exterior and reducing overall lubricant volume.
- Foggy or opaque viewing window: Thermal cycling and exposure to hydraulic fluids can cloud the lens, making it impossible to read the actual oil level and increasing the risk of operating with insufficient lubrication.
- Inaccurate fluid level readings: Internal separation of the gage’s indicator mechanism or corrosion of the float assembly provides false high or low readings, leading to incorrect maintenance decisions.
- Vibration-induced loosening: Constant shock loads in construction machinery can cause the gage mounting threads to loosen, resulting in intermittent oil seepage and potential contamination ingress.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0501.215.601 |
| Product Type | Oil Level Gage (Dipstick / Sight Glass Assembly) |
| Material | Corrosion-resistant steel stem with heat-stabilized polymer window |
| Overall Length | Approx. 215 mm (8.46 in) |
| Thread Size | M18 x 1.5 (metric fine) |
| Weight | 0.12 kg (0.26 lbs) |
| OEM Reference | ZF 0501.215.601 (genuine) |
| Sealing Method | Integrated O-ring (replace with SEALING RING 0501325471) |
Compatibility
This oil level gage is designed for ZF’s heavy-duty powershift transmission families commonly used in wheel loaders, dozers, and graders. It fits the WG180, WG200, and WG250 series, as well as the 4WG-200 and 6WG-200 variants. The gage mounts directly into the HOUSING assembly, adjacent to the SCREW PLUG and COVER components. Always verify your transmission model’s housing port location before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101128 | TRANSMISSION HOUSING | Main structural casing that contains gears and shafts |
| 4108201296 | HOUSING | Secondary housing section for clutch packs |
| 4475280018 | SCREW PLUG | Seals fill/drain ports in the housing |
| 4108303034 | COVER | Encloses the transmission’s rear access opening |
| 0636015120 | HEXAGON SCREW | Fastens covers and flanges to the housing |
| 0636302015 | SCREW PLUG | Magnetic drain plug for ferrous debris capture |
| 0501325471 | SEALING RING | Provides leak-proof seal between gage and housing |
| 0730365280 | TYPE PLATE | Identification plate riveted to the housing |
| 4108108026 | INTERM.GEARBOX | Intermediate gearbox for PTO drive |
| 4108308038 | PLANET CARRIER | Carrier assembly for planetary gear sets |
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