This article will demonstrate how to time the reverse valve pinion, and piston pinion gears on the 315 and 315G straight line sanders. This procedure must be performed any time the drive board is removed to prevent damage to the pistons and/or heads.
Intended for service technicians and end users who have removed the drive board of a 315 series straight line pneumatic sander during service or repair.
Please see the PDF document demonstrating the procedure for setting the gear timing on the 315 and 315G straight line sanders.
The Parts Manual for 315 series sanders is available for download at the link below.