Selecting The Crankpin Bearing; Checking The Crankshaft Journal Oil Clearance - SELVA MARINE Kingfish 25 Service Manual

POWR
TIP:
• Make sure that the protrusions f on the
connecting rod a and connecting rod cap
b face towards the flywheel magnet end of
the crankshaft.
• Do not turn the connecting rod until the
crankpin oil clearance measurement has
been completed.
5. Remove the connecting rod cap, and
then measure the width of the com-
pressed Plastigauge (PG-1) on the
crankpin.
Crankpin oil clearance (reference data):
0.016–0.040 mm (0.0006–0.0016 in)

Selecting the crankpin bearing

When replacing the crankpin bearing, select
the bearing as follows.
1. Check the connecting rod mark a or
painted color b.
2. Select the bearing color c for the crank-
pin bearing from the table.
7-61
Power unit
b
a
Connecting rod
mark a/color b
I/Red
II/Blue
III/Yellow
Checking the crankshaft journal oil
clearance
1. Clean the crankshaft journal bearings,
crankshaft journal, and bearing portions
of the crankcase and cylinder block.
2. Place the cylinder block upside down.
3. Install the crankshaft journal bearings 1
and crankshaft 2 into the cylinder block
3.
2
TIP:
Install the crankshaft journal bearings 1 in
the original positions.
4. Place a piece of Plastigauge (PG-1) on
each crankshaft journal a parallel to the
crankshaft.
c
c
Bearing color c
Red
Pink
Green
1
3