Figure 3-67. Oil pump fasteners
2. See Figure 3-68. Remove three fasteners holding oil pump in case.
Figure 3-68. Remove oil pump
3. See Figure 3-69. Remove bypass valve assembly. Examine valve piston and valve piston bore in pump housing. There should be no scoring and valve piston should move freely in the bore without sticking.
Figure 3-69. Bypass valve
4. See Figure 3-70. Examine gerotor. Replace parts showing scoring. Note assembly marks on the gerotor. Marks must be on the same side when assembling.
Figure 3-70. Oil pump gerotor
5. See Figure 3-71. Thoroughly lubricate during assembly. Pack pump housing with Lubriplate No.105 (NAPA Part # 765-2651) to insure oil pick-up is immediate.
Figure 3-71. Lubricate assembly
6. See Figure 3-72. Install new O-rings and lubricate with Harley-Davidson Motorcycle Oil 20W50.
Figure 3-72. Lubricate O-rings
7. See Figure 3-73. Install pump in engine. Tighten three fasteners to 9.7 Nm (85 in·lbs).
Figure 3-73. Oil pump installation @ 9.7 Nm (85 in·lbs)
8. See Figure 3-74. Using a crisscross pattern, tighten the oil pump cover fasteners to 9.7 Nm (85 in·lbs).
Figure 3-74. Oil pump cover @ 9.7 Nm (85 in·lbs)
9. Tighten bypass fastener to 35 Nm (25 ft·lbs).