Dillon Precision mainshaft grain set screw – 13789

Dillon Precision Set Screw – 13789

The 13789 set screw is, in Dillon nomenclature, the set screw that locks the main shaft pivot pin. It is one of the most versatile parts in the Dillon catalog: it appears in the exploded views of the RL550, XL650, XL750, and Square Deal B.

In the Frame & Lower Assy exploded views of the RL550 and XL750 and in the Machine Assy of the XL650, the set screw acts on the Main Shaft Pivot Pin 13830 together with the Lower Link Arm Pin 13700 and the connecting rod: if it loosens, the pin migrates laterally and the lever stroke develops play. The Square Deal B lists it in the same role on page 50 of the manual.

Main features

• Original Dillon Precision spare part
• Official designation: Set Screw
• Function: locking of the main shaft pivot pin
• Listed in the exploded views for RL550 (page 61), XL650 (page 48), XL750 (page 55), and Square Deal B (page 50)

Recommended use

Locking of the Main Shaft Pivot Pin 13830 on Dillon RL550, XL650, XL750, and Square Deal B presses, when overhauling the lever linkage.

Manufacturer code: 13789