CRANKSHAFTS & CAM GEARSInstallingChecking Compression Release CamModel Series 111200, 111900This cam gear has Easy-Spin® plus a compressionrelease on the exhaust cam. In the starting position, theactuator cam moves the rocker cam so it will open theexhaust valve at the same time as the Easy-Spine lobe.When the engine starts, the actuator cam moves out andlets the rocker cam move down and the exhaust valveoperates normally.To check, move actuator cam to the running position,Fig. 10. Push rocker cam against the actuator cam.Release the actuator cam. Actuator cam spring shouldpull actuator cam against the shoulder pin causing rockercam to raise up to starting position. Fig. 11. Thereshould be no binding. Replace if binding exists.Fig. 10. Running PositionFig. 11. Start PositionBALL BEARINGSRemoveThe ball bearing is a press fit on the crankshaft. If eitherbearing or crankshaft is to be removed, use an arborpress, as shown in Fig. 12.Fig. 12. Removing Ball BearingInstallHeat bearing in hot oil [250°F max. (120°C)]; bearingmust not rest on the bottom of the pan in which it isheated. Place crankshaft in vise with bearing side up.When bearing is quite hot it will become a slip fit on thebearing journal. Grasp bearing with the shield down andthrust it down on the crankshaft, Fig. 13. The bearingwill tighten on the shaft while cooling. DO NOTQUENCH.NOTE: Bearing shield faces crankshaft crankpin.Fig. 13. Installing Ball Bearing5
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