Overview
The ZF 0730.001.333 WASHER is an OEM genuine shim component engineered specifically for the WG 250 series transmission. This precision-machined washer sits between the TRANSMISSION HOUSING and the HOUSING assembly, where it functions as a critical axial spacer to maintain correct gear end-play and bearing preload. Manufactured to ZF’s exacting tolerances, SKU 0730.001.333 ensures proper alignment of the planetary gearset within the WG250, preventing metal-to-metal contact during high-torque operations. Without this washer, the transmission’s internal clearances would fall outside factory specifications, leading to accelerated wear of adjacent components.
Symptoms of Failure
- Transmission oil seepage at housing joint — A worn or crushed 0730.001.333 washer allows the COVER interface to shift, breaking the seal and causing slow fluid loss around the mating surfaces.
- Intermittent gear slipping under load — When this washer loses its original thickness, axial play increases, causing the clutch packs to disengage momentarily during heavy acceleration.
- Metallic grinding noise from the WG250 sump — Insufficient shim height permits the sun gear to contact the housing wall, producing a distinct scraping sound during deceleration.
- Hard shifting between forward and reverse — A deformed washer alters the hydraulic valve body’s alignment, resulting in delayed or harsh engagement when changing direction.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.001.333 |
| Inner Diameter | 18.0 mm |
| Outer Diameter | 32.0 mm |
| Thickness | 2.5 mm |
| Material | Hardened spring steel (C67S) |
| Surface Treatment | Zinc-phosphate coated |
| Weight | 12 grams |
| OEM Reference | ZF 0730.001.333 |
| Hardness | HRC 45-50 |
Compatibility
This genuine ZF washer is primarily designed for the WG 250 Series transmission, but it also fits the WG180, WG200, and WG210 models produced between 2005 and 2020. The 0730.001.333 part is used in both on-highway truck applications and off-highway construction equipment where the WG250 gearbox is installed. For proper installation, this washer must be paired with a new HEXAGON SCREW to achieve the correct torque specification of 45 Nm. Always verify your transmission’s serial number against ZF’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101028 | TRANSMISSION HOUSING | Main structural casing for gearset |
| 4646301095 | HOUSING | Intermediate housing for valve body |
| 4646301087 | COVER | Seals the housing assembly |
| 0636015304 | HEXAGON SCREW | Fastens housing components |
| 0636101828 | CAP SCREW | Secures cover to housing |
| 4646301102 | COVER SHEET | Gasket for oil pan interface |
| 4646301098 | COVER SHEET | Secondary sealing shim |
| 0730365125 | TYPE PLATE | Identification tag for transmission |
| 0631311009 | GROOVED STUD | Alignment dowel for housing |
| 0636101193 | CAP SCREW | High-torque fastener for bell housing |
