ZF 0501.311.020 ANGLE DISC for WG200/WG92/WG98 | OEM Genuine Part

Overview

The ZF 0501.311.020 ANGLE DISC is a precision-engineered component designed for the internal planetary gearset of heavy-duty ZF transmissions. This OEM genuine part, identified by SKU 0501.311.020, functions as a critical thrust washer and alignment interface within the clutch pack assembly. It ensures proper angular load distribution between rotating elements, directly influencing shift quality and torque transfer efficiency. Installed adjacent to the 4660198001 PERIPHERALS kit and the 0501209818 RANGE SELECTOR, this disc maintains axial clearance and prevents metal-on-metal contact under high-stress conditions.

Symptoms of Failure

• Erratic gear engagement during low-speed maneuvers: A worn angle disc causes uneven clutch pack pressure, leading to delayed or harsh shifting in WG200 and WG92 series transmissions.
• Metallic grinding noise from the transmission housing: When the disc surface degrades, debris contaminates the hydraulic circuit, producing audible friction sounds during acceleration.
• Intermittent loss of drive in reverse gear: Insufficient angular support from a failing disc allows the 4660101011 TRANSMISSION HOUSING to shift out of alignment, causing power interruption.
• Oil leaks near the range selector interface: Excessive play from a collapsed disc stresses the 4660301018 HOUSING seal, resulting in fluid seepage around the actuator bore.

Technical Specifications

Compatibility

This angle disc is engineered for ZF WG200, WG92, and WG98 series transmissions. It is also compatible with WG180 and WG210 models where the planetary carrier assembly uses a 120mm thrust interface. The part integrates directly with the 0631306174 CYLINDRICAL PIN for rotational indexing and requires the 0769123894 TYPE PLATE for correct installation orientation. Always verify clearance using the 0634100317 O-RING and 0636103273 CAP SCREW torque specifications from the service manual.

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