Overview
The ZF 0730.005.772 WASHER is a precision-engineered OEM genuine component designed specifically for the WG 201 series transmission. This hardened steel washer functions as a critical load-spreading interface between fasteners and the transmission housing assembly. Positioned internally within the clutch or planetary gear set, it ensures proper torque distribution and prevents galling between mating surfaces. The SKU 0730.005.772 is manufactured to ZF’s exacting tolerances, guaranteeing a secure fit that maintains axial clearance and reduces vibration-induced wear. When paired with the TRANSMISSION HOUSING (4644101203) or the TRANSMISSION HOUSING (4644301382), this washer ensures long-term structural integrity under high-torque conditions.
Symptoms of Failure
- Transmission oil seepage around bolt heads: A worn or crushed washer 0730.005.772 loses its sealing ability, allowing hydraulic fluid to migrate past fasteners. This often appears as a slow drip near the housing mating line.
- Audible clicking or rattling during gear engagement: When the washer thins from fatigue, axial play increases, causing metallic chatter from loose fasteners inside the WG201.
- Inconsistent gear engagement or delayed shifts: A deformed washer alters the preload on clutch packs, leading to erratic hydraulic pressure and slipping under load.
- Visible deformation or cracking during inspection: Heat cycling and vibration can cause the washer to split, leading to catastrophic fastener loosening if not replaced promptly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0730.005.772 |
| Material | Hardened Carbon Steel (DIN 17222) |
| Inner Diameter | 14.2 mm |
| Outer Diameter | 28.0 mm |
| Thickness | 2.5 mm |
| Weight | 0.008 kg |
| Surface Finish | Zinc-plated (ISO 4042) |
| OEM Reference | ZF 0730.005.772 |
| Torque Rating | 45 N·m (max) |
Compatibility
This washer is engineered for the ZF WG 201 series, including the WG180, WG200, and WG210 variants. It is also compatible with select ZF Ecomat 4HP and 5HP transmissions that share the same fastener pattern. Always verify fitment with your specific housing; the THREADED BUSH (4644301189) and SCREW PLUG (0636302005) are commonly used in the same assembly points. For complete rebuilds, inspect the O-RING (0634306198) and SEALING RING (0634801098) for simultaneous replacement.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101203 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301382 | TRANSMISSION HOUSING | Alternate housing variant for WG201 |
| 4644301189 | THREADED BUSH | Provides threaded anchor points in housing |
| 0636302005 | SCREW PLUG | Seals hydraulic passages in housing |
| 0634306198 | O-RING | Hydraulic seal for plug and bush interfaces |
| 0634801098 | SEALING RING | Static seal for cover plate joints |
| 0730365067 | TYPE PLATE | Identification tag for transmission model |
| 0631311009 | GROOVED STUD | Alignment pin for housing assembly |
| 4644301161 | COVER PLATE | Access cover for valve body inspection |
| 0636100621 | HEXAGON SCREW | Fastener for securing cover plate |
