2S5925 2S5926 Track Adjuster Relief Valve & Grease Check Fitting Set Fits CAT FiOne New Aftermarket Replacement Universal Track Adjuster Relief Valve & Grease Check Fitting Set. These Relief Valves fit most Dozers and Excavators out there. The Fittings are 2 1 2" long. Set Contains: 1 Relief Valve (2S5925) & 1 Grease Check Fitting (2S5926). ACTUAL PHOTOS. PLEASE NOTE: This Set is for ONE Track Adjuster side. If you need both sides, order 2 Sets. Both parts are also available separately through our Store. Search for each Part