Installing The Crankshaft

CRANKSHAFT

e. Install the crankshaft journal lower bearings       • If J1–J5 are the same, use the same size for all
   “3” into the lower crankcase and assemble             of the bearings.
   the crankcase halves.
NOTE:
• Align the projections “c” of the crankshaft jour-
  nal lower bearings with the notches “d” in the
  lower crankcase.
• Do not move the crankshaft until the clearance
  measurement has been completed.

                                                       A

f. Tighten the bolts to specification in the tight-
   ening sequence cast on the crankcase.
   Refer to “CRANKCASE” on page 5-94.                                                   J1 J2 J3 J4 J5
g. Remove the lower crankcase and the crank-
   shaft journal lower bearings.
h. Measure the compressed Plastigauge® width
   “e” on each crankshaft journal.
   If the crankshaft-journal-to-crankshaft-jour-
   nal-bearing clearance is out of specification,
   select replacement crankshaft journal bear-
   ings.

                                                             For example, if the lower crankcase J1 and
                                                             crankshaft web J1 numbers are 6 and 2 re-
            e                     11                         spectively, then the bearing size for J1 is:
                         2   11
                 22                                        J1 (crankcase) - J1 (crankshaft web) + 2
                                                           =
                                                           6 - 2 + 2 = 6 (pink)

▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲                                    Bearing color code
                                                                     2.Black 3.Brown 4.Green 5.Yel-
4. Select:
                                                                     low 6.Pink 7.Red 8.White
 • Crankshaft journal bearings (J1–J5)
NOTE:                                                  EAS26200

• The numbers “A” stamped into the lower crank-        INSTALLING THE CRANKSHAFT
  case and the numbers “B” stamped into the            1. Install:
  crankshaft web are used to determine the re-           • Crankshaft journal upper bearings
  placement crankshaft journal bearing sizes.              (into the upper crankcase)
• J1–J5 refer to the bearings shown in the lower         • Crankshaft journal lower bearings
  crankcase and crankshaft web illustration.               (into the lower crankcase)

                                                   5-114
                                                          CRANKSHAFT

NOTE:
• Align the projections “a” on the crankshaft jour-
  nal bearings “1” with the notches “b” in the
  crankcases.
• Be sure to install each crankshaft journal bear-
  ing in its original place.

                                                  5-115