Fig. 2-271
7. Place the PTO-side crankshaft bearing into position making sure the bearing dowel pin hole is positioned inward. NOTE: The dowel pin hole is the hole that doesn’t go entirely through the bearing case. Fig. 2-273
AN070
NOTE:The seal must be installed with its spring side towards the crankshaft.
2. Using a small screwdriver, apply a thin coat of grease to the inner seal lips. AN078
3. Using a pair of snap ring pliers, install the snap ring securing the inner seal in the crankcase. 4. Using the seal driver, carefully install the outer water pump seal. Gently tap the seal down into position until it seats itself against its flange. Fig. 2-272
8. Lubricate the inner lips of the crankshaft oil seals with grease; then slide the seals onto the crankshaft making sure the spring side of each seal faces the center of the crankshaft. NOTE: There is a MAG-side seal and a PTO-side seal.
9. Apply oil to the crankshaft bearings; then install the crankshaft into the upper crankcase half. Be sure the alignment hole in each bearing is positioned over its respective dowel pin in the crankcase; then seat the crankshaft. NOTE: To check the bearing for proper position, place the point of a sharp tool into the dimple found in the bearing race. Strike the tool with the palm of the hand in either direction. If the bearing moves, it isn’t positioned correctly and must be rotated until it drops onto the dowel pin. AN072
5. Apply a thin coat of grease to the sealing surface of the oil-injection pump driveshaft; then place the Oil Seal Installation Tool (p/n 0644-219) at the end of the shaft. Twist the driveshaft clockwise as it is pushed through the oil and water pump seals; then remove the tool. Position the shim on the oil-injection pump end of the driveshaft.
! CAUTION Be very careful not to damage the seals when installing the oil pump driveshaft. Be certain to use the seal installation tool. Twist the driveshaft clockwise as it enters the seal area and while it is being pushed through the seals.
6. Position the upper crankcase half upside-down on two wooden blocks; then install the C-ring and four dowel pins. 2-64
! CAUTION If the bearings are not properly seated during assembly, the crankcase halves will not seal tightly and engine damage will result.
10. Position the two center seal rings with their end gaps 180° apart (up on one and down on the other).