4.1.Reverse one of the methods described for lowering the cam into the housing when lifting the cam. See section titled "Cam and/or Input Shaft Replacement" in this Service Manual.
INPUT SHAFT INSTALLATION:
1.Prepare the input shaft for installation by installing the locknuts and lockwasher on the side of the input shaft with the long shaft extension.
1.1.Just start the locknuts onto the thread- ed portion of the input shaft. They will be snugged up later and tightened after setting the cam.
2.Measure the overall (stack) height of the new bearing cones and bearing cups.
2.1.Compare the measured values to the same values as measured on used bear- ing cones and bearing cups.
2.2.Use this measurement to adjust the amount of input shim used when installing the new bearings.
3.Install a new bearing cone onto the long extension of the input shaft.
3.1.Coat the shaft with
3.2.Heat a new bearing cone in a commer- cial bearing oven that has been designed for this purpose. Heat evenly to about 250˚F.
3.3.Alternatively. heat the bearing with a heat gun.
WARNING
Use protective gloves while handling bearings after they have been heated in an oven.
3.4.Using a twisting motion of the hand, push the bearing cone against the shoul- der on the input shaft.
CAUTION
Make sure the bearing is seated against the shaft shoulder. Improper mounting of the bearing can cause premature failure.
3.5.If the bearing does not immediately seat against the shaft shoulder, use a piece of tubing over the shaft and against the bearing, and a soft hammer to drive the bearing against the shoulder.
4.Install the input shaft from the long exten- sion side of the shaft.
5.The input shaft should be a slip fit to slight press fit into the cam. Use a rocking hand motion and push the input shaft through the cam.
5.1.If the shaft becomes stuck, hit the end of the input shaft with a soft faced ham- mer and drive the input shaft through the cam.
5.2.In a worst case, use a hydraulic jack to push the input shaft through the cam. See section titled "Cam and/or Input Shaft Replacement" in this Service Manual for construction of a puller and installation of wood blocks between the cam and the housing to provide support (hold cam in position) while pushing the input shaft through the cam.
6.Install locknuts and lockwasher on the opposite side of the cam. Inspect and reuse existing locknuts and lockwashers if they are not damaged.
6.1.Just start the locknuts onto the thread- ed portion of the input shaft. They will be snugged up later and tightened after setting the cam.
7.Install a new Bearing Cone onto the short extension of the input shaft.
7.1.Coat the shaft with
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