How to Repair a Flow Style Piston Seal Using Kit #12386

Remove the first wear ring from the piston.

Remove the second wear ring from the piston.

Remove the first split ring from the middle groove of the piston.

Remove the second split ring from the middle groove of the piston.

Cut the cap seal from the middle groove of the piston with a pen knife.

Use a pick to remove the T-seal from the middle groove of the piston.

Wipe down the piston with the towel to remove excess hydraulic fluid.

Visually inspect the piston for any scratches or blemishes. If damaged, replace the piston.

Reapply the hydraulic fluid to the piston with a spray bottle.

Put the modified wear ring into the top groove of the piston.

To create the modified wear ring, shave one edge of a new wear ring (not included in kit) with a belt sander and have the wear ring facing up so there is an easier placement of the cap seal.

Put the piston assembly tool onto the piston to fit in the groove.

Apply hydraulic fluid to the piston assembly tool.

Slide the T-seal around the piston assembly tool, past the modified wear ring, and into the middle groove of the piston.

Slide the cap seal onto the piston assembly tool and push the cap seal down (using rigid cardboard) past the modified wear ring and over the T-seal to place in the middle groove.

Put the first split ring onto the middle groove with the rounded side facing inward towards the T-seal.

Put the second split ring onto the middle groove with the rounded side facing inward towards the T-seal.

The break in the split ring should be on the opposite side of the first split ring.

Put the first wear ring onto the bottom groove of the piston.

Put the second wear ring onto the top groove of the piston.

Apply hydraulic fluid to the entire piston with a spray bottle.

Proceed to the assembly of the intensifier.