ZF 0631.610.089 SET SCREW for WG190/WG210 | OEM Genuine Part

Overview

The ZF 0631.610.089 SET SCREW is a precision-engineered fastening component specifically designed for the WG190 and WG210 series transmissions. This OEM genuine part plays a critical role in securing internal assemblies within the transmission housing, ensuring that critical components such as the HOUS.FRONT SECT and the HOUSING REAR PART remain properly aligned under high torque and thermal stress. The set screw, identified by SKU 0631.610.089, is manufactured to ZF’s exacting tolerances to prevent loosening from vibration, a common issue in heavy-duty industrial applications. Without this set screw, the structural integrity of the entire gearbox assembly is compromised, leading to misalignment of the TRANSMISSION HOUSING and the HOUSING REAR SECTION.

Symptoms of Failure

• Transmission oil seepage at housing joints: A worn or stripped set screw cannot maintain clamping force, allowing lubricant to escape between the front and rear housing sections.
• Abnormal gear rattle or clunking during shifts: When the set screw fails, internal clearances increase, causing gear train components to shift and produce metallic noise under load.
• Progressive gear slipping under heavy load: Loss of fastener tension leads to gradual misalignment of the planetary gear sets, reducing torque transfer efficiency.
• Visible fretting or wear on housing mating surfaces: A loose set screw allows micro-movement between the HOUS.FRONT SECT and the HOUSING REAR PART, creating aluminum debris that contaminates the oil.

Technical Specifications

Compatibility

This set screw is primarily used in the ZF WG190 and WG210 series transmissions, which are common in off-highway vehicles, construction equipment, and agricultural machinery. Based on its design and thread pattern, it is also compatible with the WG180, WG200, and WG220 series where the same housing interface is employed. The part directly interfaces with the TRANSMISSION HOUSING and the HOUSING REAR SECTION to secure the rear cover assembly. Always verify your transmission model number before ordering.

Related Components

Frequently Asked Questions

Q: Can I reuse the old set screw during a transmission rebuild?
A: ZF strongly recommends replacing the 0631.610.089 set screw with a new OEM part during any major overhaul. The thread locking compound degrades after initial installation, and reusing the screw can lead to insufficient clamping force and eventual oil leaks.

Q: What is the torque specification for this set screw?
A: The factory specification for the ZF 0631.610.089 set screw is 45 Nm. Always use a calibrated torque wrench and apply a medium-strength thread locker to prevent loosening in high-vibration environments.

Q: Will this part fit a ZF WG180 transmission?
A: Yes, the 0631.610.089 set screw is dimensionally identical to the fastener used in WG180, WG200, and WG220 series transmissions. However, we recommend cross-referencing your transmission’s housing part number with the TRANSMISSION HOUSING to confirm compatibility.