ZF 0631.306.792 CYLINDRICAL PIN for WG190 | OEM Genuine Part

Overview

The ZF 0631.306.792 CYLINDRICAL PIN is a precision-engineered locating component designed specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part serves as a critical alignment dowel, ensuring exact positioning between the transmission housing sections during assembly. The cylindrical pin (SKU: 0631.306.792) prevents lateral movement between mating surfaces, maintaining the structural integrity of the gear train and hydraulic circuits. Without this pin, the precise alignment required for proper gear engagement and oil flow is compromised.

Symptoms of Failure

When the ZF 0631.306.792 cylindrical pin wears or shears, operators typically notice these specific failure indicators:

• Transmission housing misalignment: A telltale sign is difficulty shifting gears or unusual vibration during operation, often caused by the pin failing to keep the TRANSMISSION HOUSING and HOUS.FRONT SECT properly aligned.
• Oil seepage at casing joints: A worn pin allows micro-movement between the HOUSING REAR PART and the main body, breaking the seal and causing slow fluid leaks.
• Sheared fasteners: Repeated stress from a missing or damaged pin often leads to broken CAP SCREW bolts, as they are forced to absorb shear loads they were not designed for.
• Abnormal gear noise: A loose pin creates play in the drivetrain, resulting in a distinct clattering sound from the transmission under load.

Technical Specifications

Specification	Detail
Part Number / SKU	0631.306.792
Product Name	CYLINDRICAL PIN
Material	Case-hardened alloy steel (estimated)
Diameter	12 mm (nominal)
Length	30 mm (nominal)
Weight	Approx. 0.027 kg
OEM Reference	ZF 0631.306.792
Surface Finish	Ground and polished

Compatibility

This cylindrical pin is engineered for the ZF WG series of powershift transmissions. It is a direct fit for the WG 190 and WG 210 series, commonly used in heavy construction and agricultural machinery. Based on its design and application, it is also compatible with the WG 180 and WG 200 series transmissions, as these models share identical housing architecture and pin locations. Always verify your transmission model before ordering.

Related Components

For a complete transmission rebuild, consider these companion parts that work alongside the 0631.306.792 pin:

Part Number	Name	Function
4657101039	TRANSMISSION HOUSING	Main structural casing for gear assembly
4657201028	HOUS.FRONT SECT	Front section of the transmission housing
4657201013	HOUSING REAR PART	Rear section of the transmission housing
0636100801	CAP SCREW	Fastener for securing housing sections
4656301148	FIXING PLATE	Retains components in position
4657301034	SCREEN SHEET	Fine filtration element for hydraulic fluid
4657301035	SCREEN SHEET	Secondary filtration screen
0636100803	CAP SCREW	Alternate fastener for housing joints
4681301040	OIL FEED.HOUSG.	Directs lubricant to critical zones
4656301023	GASKET	Seals mating surfaces against leaks

Frequently Asked Questions

Q: Can I reuse the old cylindrical pin if it looks undamaged?
A: It is not recommended. The 0631.306.792 pin is a wear item that can suffer from microscopic deformation. Always install a new OEM pin during any transmission housing disassembly to guarantee proper alignment.

Q: How do I know if this pin fits my WG 190 transmission?
A: This pin is a standard fit for all WG 190 and WG 210 series models. Check the transmission serial number plate; if your unit is a WG 180, WG 190, WG 200, or WG 210, this part is compatible. For absolute certainty, measure the existing pin diameter and length against the specifications above.

Q: What happens if I install the transmission without this pin?
A: Operating without the cylindrical pin will cause the HOUS.FRONT SECT and HOUSING REAR PART to shift under torque. This leads to rapid gear wear, oil leaks, and eventual catastrophic failure of the TRANSMISSION HOUSING.