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Taperlock Set Screws   SB 124.1

Service Bulletin: SB 124.1

Subject: Taperlock Set Screws


Replace the 1/2-13 x 1 inch oval point set screws in the taperlock/sprocket assembly with a 1/2-13 x 3/4 inch oval point set screw and a hollow lock set screw. Apply a spot of liquid thread lock on both set screws during the installation.

This bulletin applies to the silent chain drive sprocket on the right angle drive unit mounted underneath the Tamper lube station and the opposing taperlock/sprocket assembly on the main shaft.


The parts needed are:

4 pcs of SC-17106 oval point set screw
4 pcs of SC-17104 hollow lock set screw
1 bottle of liquid thread lock