ZF 0630.001.027 WASHER for WG200 | OEM Genuine Part

Overview

The ZF 0630.001.027 WASHER is a precision-engineered OEM genuine component designed specifically for the WG 200 series transmission. This hardened steel washer functions as a critical load-spreading interface between fasteners and transmission housing surfaces, ensuring uniform clamping force during assembly. Positioned internally within the gear train assembly, it prevents galling and distortion on mating surfaces. The SKU 0630.001.027 is manufactured to ZF’s exacting tolerances, making it essential for maintaining proper gear alignment and torque retention in heavy-duty industrial applications.

Symptoms of Failure

• Transmission oil seepage at bolt interfaces: A worn or crushed 0630.001.027 washer can compromise the seal between the TRANSMISSION HOUSING and fasteners, leading to slow oil leaks that worsen under load.
• Gear engagement hesitation or slipping: When the washer deforms, clamping force on the GROOVED STUD diminishes, allowing axial play that disrupts gear mesh precision.
• Abnormal vibration during power take-off: Loss of washer thickness causes uneven load distribution across the TRANSMISSION HOUSING flange, generating low-frequency vibration in the driveline.
• Torque loss on retaining bolts: Repeated thermal cycling can embed the washer into softer housing materials, requiring constant retorquing to maintain assembly integrity.

Technical Specifications

Compatibility

This washer is validated for use in the ZF WG 200 series transmissions, including models WG180, WG200, and WG210. It also applies to select WG 150 variants with similar housing bolt patterns. The 0630.001.027 interfaces directly with the TYPE PLATE mounting points and should always be replaced when servicing the COVER PLATE or O-RING assemblies. For non-WG series transmissions, cross-reference the inner diameter and thickness before installation.

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