Groundsmaster 4100--D/4110--D Hydraulic SystemPage 4 -- 1198. Remove and discard back--up gaskets and pressureseals from wear plates.9. Turn front flange over, with seal side up.IMPORTANT: Make sure not to damage the frontflange counter bore when removing the seals fromthe front flange.10.Carefully remove dust seal, retaining ring, flangewasher and shaft seal from the front flange (Fig. 83).Note orientation of seal lips during removal. Discard re-moved seals.Inspection1. Remove any nicks and burrs from all parts withemery cloth.CAUTIONUse eye protection such as goggles when usingcompressed air.2. Clean all parts with solvent. Dry all parts with com-pressed air.3. Inspect drive gears and idler gears for the following(Fig. 84):A. Gear shafts should be free of rough surfaces andexcessive wear at bushing points and sealing areas.Scoring, rough surfaces or wear on gear shafts indi-cates need for replacement.B. Gear teeth should be free of excessive scoringand wear. Any broken or nicked gear teeth must bereplaced.C. Inspect gear face edge for sharpness. Sharpedges of gears will mill into wear plates and, thus,must be replaced.4. Inspect wear plates for the following:A. Bearing areas should not have excessive wear orscoring.B. Face of wear plates that are in contact with gearsshould be free of wear, roughness or scoring.C. Thickness of wear plates should be equal.5. Inspect front flange and body for damage or wear.1. Dust seal2. Retaining ring3. Flange washer4. Shaft sealFigure 831 2 3 41. Gear shaft spline2. Gear shaft3. Gear teeth4. Gear face edgeFigure 841342342Assembly (Fig. 81)NOTE: When assembling the motor, check the markerline on each part to make sure the parts are properlyaligned during assembly.1. Lubricate O--rings, pressure seals, back--up gasketsand wear plate grooves with a thin coat of petroleum jel-ly. Lubricate all other internal parts freely with clean hy-draulic oil.2. Install new seals into front flange (Fig. 83). Note ori-entation of seal lips during installation:A. Press shaft seal into front flange until it reachesthe bottom of the bore.B. Install flange washer into front flange and theninstall retaining ring into the groove of the frontflange.C. Install new dust seal into front flange.HydraulicSystem