Checking The Oil Nozzles

CRANKSHAFT

EAS26040

REMOVING THE CRANKSHAFT JOURNAL                                    Journal oil clearance (using plas-
BEARINGS                                                           tigauge®)
1. Remove:                                                           0.027–0.045 mm (0.0011–0.0018
 • Crankshaft journal upper bearings                                 in)
   (from the upper crankcase)
 • Crankshaft journal lower bearings                    ECA13920

   (from the lower crankcase)                           CAUTION:
NOTE:                                                   Do not interchange the crankshaft journal
Identify the position of each crankshaft journal        bearings. To obtain the correct crankshaft-
bearing so that it can be reinstalled in its original   journal-to-crankshaft-journal-bearing clear-
place.                                                  ance and prevent engine damage, the crank-
                                                        shaft journal bearings must be installed in
                                                        their original positions.
ET3P61029

CHECKING THE OIL NOZZLES                                ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
The following procedure applies to all of the oil       a. Clean the crankshaft journal bearings, crank-
nozzles.                                                   shaft journals, and bearing portions of the
1. Check:                                                  crankcase.
 • Oil nozzle                                           b. Place the upper crankcase upside down on a
   Damage/wear → Replace the oil nozzle.                   bench.
 • Oil passage                                          c. Install the crankshaft journal upper bearings
   Obstruction → Blow out with compressed air.             “1” and the crankshaft into the upper crank-
                                                           case.
EAS26070
                                                        NOTE:
CHECKING THE CRANKSHAFT
1. Measure:                                             Align the projections “a” on the crankshaft jour-
 • Crankshaft runout                                    nal upper bearings with the notches “b” in the up-
   Out of specification → Replace the crank-            per crankcase.
   shaft.

            Runout limit C
             0.030 mm (0.0012 in)

                                                        d. Put a piece of Plastigauge® “2” on each
                                                           crankshaft journal.
                                                        NOTE:
                                                        Do not put the Plastigauge® over the oil hole in
2. Check:                                               the crankshaft journal.
 • Crankshaft journal surfaces
 • Crankshaft pin surfaces
 • Bearing surfaces
   Scratches/wear → Replace the crankshaft.
3. Measure:                                                                                           2
 • Crankshaft-journal-to-crankshaft-journal-                                               1   11
                                                                                  2   22
   bearing clearance                                                           22
   Out of specification → Replace the crank-
   shaft journal bearings.

                                                    5-113