Distributor Gear Installation Diagram - Shaft Dimensions & MSD FE PN 8594 Spec

This document is a technical line-drawing (blueprint style) showing how to correctly position a distributor drive gear on a distributor shaft, commonly referenced for cam/distributor gear installation. The illustration shows the distributor housing, shaft, thrust collar, and drive gear in cross-section. A callout labels the "Thrust Collar," and an arrow at the shaft end instructs the installer to "Press firmly to take out all end play before measuring." Two dimensional specifications are given: the distance from the thrust collar to the gear reference point is 1.750 inches, and the overall measurement from the housing/collar reference to the far side of the gear must fall between 3.996 inches minimum and 4.005 inches maximum. A note states that on the MSD FE Distributor, part number PN 8594, the specification differs: 3.045" - 3.050". A reader learns the exact gear placement dimensions needed when pressing a distributor gear onto a shaft, the importance of removing shaft end play before taking the measurement, and the alternate spec for the MSD FE distributor. The document itself gives no year, make, model, or engine applicability beyond the MSD FE distributor reference (FE typically indicating Ford FE-series applications).