<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">What sort of condition are the piston surfaces? If they have any slight roughness from corrosion they should be replaced. Also, they should have a lead in chamfer on the back edge. <div><br></div><div>Best,</div><div><br></div><div>Steven</div><div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Sent from a small screen, please excuse any typos. </div><div dir="ltr"><br><blockquote type="cite">On Jul 3, 2025, at 11:11, Jim Pile via Rovernet <rovernet@rovernet.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff<div class="yahoo-style-wrap" style="font-family:arial;font-size:16px;"><div dir="ltr" data-setdir="false">Folks,</div><div dir="ltr" data-setdir="false"> I'm at the rebuild point of pressing the pistons back into the housing. In spite of lubricating both housing and piston with brake fluid, I can't seem to get the piston past the sealing ring. It gets stuck there, in spite of using a goodly amount of pressure. The manual of course states that it should slide in without excessive pressure, but I'm way past that point. Grooves were cleaned out, and sealing rings look as they should. Pressure has been evenly applied. So how do I convince the pistons to slide into place?</div><div dir="ltr" data-setdir="false"> I performed this same task several decades ago, and don't recall this being a problem.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"> Helpful tips would be greatly appreciated.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"> Thanks,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"> Jim Pile</div></div><span>_______________________________________________</span><br><span>Rovernet mailing list</span><br><span>Rovernet@rovernet.org</span><br><span>http://rovernet.org/mailman/listinfo/rovernet_rovernet.org</span><br></div></blockquote></div></body></html>