Removal
1. Obtain the CAMSHAFT NEEDLE BEARING REMOVER/INSTALLER (Part No. HD-42325-A).
2. See Figure 3-99. Remove four thumb screws (1) from threaded holes in support plate (2), if installed.
3. Sparingly apply clean engine oil (9) to threads of collet (3) to prolong service life and verify smooth operation.
4. Slide collet through support plate so that threaded end exits stamped side of plate.
5. Aligning two large holes in support plate with needle bearing bores, hang right side of plate on ring dowel in crankcase flange.
6. Install thumb screws to secure support plate to crankcase.
7. Center expandable end of collet in bearing bore and slide bearing (7) and flat washer (5) on threaded end. Start hex nut (8) on threaded end.
8. Push expandable end of collet through bearing bore into flywheel compartment. Feel for inside edge of needle bearing using end of collet and then back off slightly.
9. Holding collet to prevent lateral movement, finger tighten hex nut until bearing contacts support plate.
10. See Figure 3-103. Hold flat on collet to prevent rotation and expand collet by turning hex at end of shaft clockwise. Expandable end of collet makes contact with needle bearing ID.
11. See Figure 3-98. Turn hex nut clockwise until bearing is free. If necessary, hold flat on collet to prevent rotation.
12. Remove four thumb screws and pull support plate from crankcase.
13. Holding flat on collet, turn hex at end of shaft counterclockwise to close collet. Remove and discard needle bearing.
14. Repeat procedure to remove second needle bearing.
Installation
1. Obtain the CAMSHAFT NEEDLE BEARING REMOVER/INSTALLER (Part No. HD-42325-A).
NOTE
To avoid engine damage, install needle bearings to the correct depth.
2. See Figure 3-101. Using a dial caliper, measure thickness of support plate.
3. Determine the required distance from the top of the support plate to the edge of the installed needle bearing by adding support plate thickness to 3.10 in. (78.7 mm). Record this value.
NOTE
For example, if the support plate is 0.50 in. (12.7 mm) thick, then the measurement from the top of the support plate to the edge of the needle bearing should be 3.60 in. (91.4 mm).
4. See Figure 3-99. Sparingly apply clean engine oil to threads of installer forcing screw (4) to prolong service life and verify smooth operation.
5. Thread installer forcing screw into stamped side of support plate (2) until threads begin to emerge from opposite side.
6. Place installer (6) at end of installer forcing screw.
7. Place new needle bearing on installer with lettered side facing shoulder of installer.
8. See Figure 3-102. Aligning two large holes in support plate with needle bearing bores, hang right side of plate on ring dowel in crankcase flange.
9. Install thumb screws to secure support plate to crankcase.
10. Install first needle bearing as follows:
a. See Figure 3-103. Turn forcing screw clockwise to press needle bearing into bore.
b. Back out forcing screw and remove installer. Remove forcing screw from support plate.
c. See Figure 3-104. Insert dial caliper through forcing screw bore and measure distance from top of support plate to edge of needle bearing.
d. Repeat steps until bearing is at correct installed depth.
Temporarily leave tool in this position.
11. See Figure 3-105. Once the bearing is at correct depth, measure from head (top) of installer forcing screw to support plate. Record this measurement.
12. Remove forcing screw from support plate and install over second needle bearing bore. Place installer at end of forcing screw. Place new needle bearing on installer with lettered side facing shoulder of installer.
13. Turn forcing screw until distance from head (top) of forcing screw to support plate equals measurement obtained previously.
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