Mercury MerCruiser Service Manual page 233

IMPORTANT: Position the Plastigauge on the crankshaft journal so that it will be centered as it lays across the bearing
shell.
4. Place a piece of gauging plastic parallel to the crankshaft on the middle of the open crankshaft connecting rod journal
surface as shown. Install the gauging plastic the full width of the journal.
5. Install the bearing cap.
6. Tighten the bearing cap screws in two steps to the specified torque.
Description
Bearing cap screws
IMPORTANT: Do not rotate the crankshaft while the gauging plastic is between the bearing and journal.
7. Without rotating the crankshaft, remove the bearing cap and use the scale on the gauging plastic envelope to measure the
Plastigauge width at the widest point.
b
Description
Journal clearance
8. If the clearance is not within specifications, select a new, correct size bearing and recheck the clearance.
90-8M0099748 eng DECEMBER 2015
Plastigauge placement
a
a - Compressed gauging
b - Scale
54229
Production
Engine Inspection and Assembly
54228
First torque
Final torque
6.2 Liter (377 cid)
0.047–0.110 mm (0.0019–0.0043 in.)
© 2016 Mercury Marine
Nm lb‑in.
25 – 18.4
+90°
Page 3B-31
lb‑ft