Overview
This genuine ZF 0730.109.974 WASHER is a precision-engineered sealing component designed for heavy-duty construction machinery transmissions. Positioned between the transmission housing and mating surfaces, this OEM washer prevents fluid bypass and maintains critical clamping force within the assembly. The SKU 0730.109.974 is specifically manufactured to ZF’s exacting tolerances, ensuring a leak-free interface that protects internal gears and clutches from contamination. When paired with the TRANSMISSION HOUSING and the HOUSING, this washer forms a vital seal that supports optimal hydraulic pressure and torque transfer in demanding off-highway applications.
Symptoms of Failure
- External oil seepage at housing joints: A worn 0730.109.974 washer often causes visible oil drips around the transmission housing seam, especially after prolonged operation under load.
- Gradual hydraulic pressure loss: When this washer flattens or cracks, internal fluid bypass can lead to sluggish gear engagement and reduced clutch holding capacity.
- Increased operating noise from gear train: Insufficient sealing allows air ingress, causing cavitation and whining sounds during shifting cycles.
- Contaminated transmission fluid: A degraded washer permits dirt ingress, accelerating wear on bearings and synchronizers.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.109.974 |
| Material | Steel with zinc-nickel coating |
| Outer Diameter | 38.0 mm |
| Inner Diameter | 22.5 mm |
| Thickness | 2.5 mm |
| Weight | 12 g |
| OEM Reference | ZF 0730.109.974 |
Compatibility
This washer is engineered for ZF WG-series powershift transmissions commonly used in construction machinery. It is a direct fit for models including WG180, WG200, WG120, and WG150. The part also integrates with the GROOVED STUD and the TYPE PLATE for proper alignment and identification during rebuilds. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093101016 | HOUSING | Encloses gear train and supports bearing loads |
| 2093301030 | TRANSMISSION HOUSING | Main structural casing for transmission assembly |
| 0730365092 | TYPE PLATE | Identification plate with model and serial number |
| 0631311009 | GROOVED STUD | Alignment and fastening stud for housing |
| 4475280013 | SCREW PLUG | Seals oil passages and inspection ports |
| 2093301021 | GASKET | Provides static seal between housing halves |
| 0636302061 | SCREW PLUG | Drain or fill plug for transmission fluid |
| 0634801215 | SEALING RING | Prevents leakage at threaded connections |
| 4475280039 | SCREW PLUG | High-pressure plug for hydraulic circuits |
| 0634303144 | O-RING | Dynamic seal for piston and valve assemblies |
Frequently Asked Questions
Q: Can I reuse the 0730.109.974 washer during a transmission rebuild?
A: No. ZF recommends always replacing this washer with a new genuine part to ensure proper crush and sealing characteristics. Reuse risks leaks and pressure loss.
Q: What torque should I apply to the housing bolts when installing this washer?
A: Refer to your ZF service manual; typical values range from 45-55 Nm for M10 bolts. Over-torquing can deform the washer and compromise the seal.
Q: Is this washer compatible with ZF 6HP automatic transmissions?
A: No. The 0730.109.974 is designed exclusively for WG-series powershift transmissions used in construction machinery, not passenger car automatics.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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