VALVE GP-SELECTOR & PRESS CONT 6I8723 - Caterpillar

Procedure to Install the 260-6822 Unloader Kit
Note: A separate 260-6822 Unloader Kit for the unloader is required for each unloader on the air compressor.
Illustration 1 g01514736
260-6822 Unloader Kit (1) Screws for the unloader cap (2) Splash shield for air compressors with a single cylinder (3) Unloader cap (4) Gasket for unloader cap (5) Balance piston (6) Spring (7) O-ring (8) Unloader piston (9) O-ring (10) O-ring (11) Cylinder bore for the Unloader (12) Air compressor
Remove any remaining contamination in the area of the air compressor. This will prevent any debris from entering the bore of the unloader.Note: Make sure in order to apply pressure to the unloader with your hand before proceeding to Step 2. The piston spring (6) under the unloader cap (3) is under pressure. This could force the unloader cap off the air compressor (12) .
Loosen the two screws (1) that secure the unloader cap (3) to the cylinder head of the air compressor (12). Again, remember to apply some pressure to the unloader cap (3) .
Carefully release the hold on the unloader cap until the tension of the spring is released. Then remove the unloader cap. Also remove the splash shield (2) on air compressors with a single cylinder.Note: Retain the original unloader cap (3) and the splash shield (2), if equipped. These parts will be reused.
Remove the cover gasket (4) for the unloader and discard the gasket.
Remove the balance piston (5) and the spring (6). Discard the piston and the spring from the cylinder head on the air compressor.
Remove the unloader piston (8) and discard the piston. Also remove the three O-rings (7), (9), and (10). Discard the O-rings as well.
Clean the bore (11) for the unloader piston (8) in the cylinder head of the air compressor.Note: Thoroughly lubricate the O-rings before installation. Also make sure that the O-rings are not twisted or pinched after the O-rings have been installed.
Lubricate the O-rings, and then install the O-rings (7), (9), and (10) on the unloader piston. Use the lubricant that was provided