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Piston Kit 41.81 $29.52

Coleman Sanborn Oil-Free Pumps Parts

Product Details
H436728 - Piston Kit

Found under the following brands: Master Tool Repair
Description:

Kit includes: Connecting Rod/Piston Assy, Piston Ring, Spacer, Conrod Screw, Nut, Piston Cap, Screw and Cylinder. Click the 'Extra Details' tab for important installation instructions!

Click on the Videos tab to view a helpful installation video!

Click HERE for installation instructions!

A piston is a disk or cylindrical part tightly fitting and moving within the cylinder, either to compress or move a fluid or air collected in the cylinder, or to transform energy imparted by a fluid (or air) entering or expanding inside the cylinder, into a rectilinear motion usually transformed into rotary motion by means of a connecting rod.

Extra Details

Important! Use the correct spacer gasket that are provided in the kit!

The spacers (gaskets) are used to control the proper clearance between the con-rod cap and the valve plate in the pump assembly. If your original pump had the spacer(s) in place then you will need to use the same color spacer from this service kit. Each kit comes with two spacers, one is green in color (approx. .013” thick) and the other one is gray in color (approx. .039” thick).

The spacers (when used) are intended to be placed between the pump casting and the cylinder sleeve (see below image). If the incorrect spacer is used or if you place them on top of the cylinder sleeve instead of under it, the con-rod cap could hit the valve plate assembly. It's always recommended to rotate the pump by hand after re-assembly (prior to plugging it in) to ensure that there is no binding (proper con-rod centering in the sleeve) or contact with the valve plate!

Video



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