ENGINE
5-40
BY Service Manual
Pistons and Cylinders
IMPORTANT
Ensure the bearing inserts, and connecting
rod and cap mounting surfaces are
absolutely clean and oil-free.
2. Install one blue-marked bearing insert in each
connecting rod and one red-marked insert in
each rod cap.
3. Rotate the crankshaft so the journal for the
piston being installed is near BDC.
4. Apply a light coat of clean engine oil to the
bearing insert.
Figure 5-57
5. Install special tool OEM No. 11 6 330 on
connecting rod
(Figure 5-57)
.
6. Lubricate the piston, piston rings, cylinder bore,
and piston ring compressor with clean engine
oil.
Figure 5-58
7. Position the piston rings so that the ring gaps
are distributed evenly (approximately 120°
apart) around the piston and
not
in line with the
wrist pin. Install piston ring compressor
(Figure 5-58)
.
Figure 5-59
IMPORTANT
NEVER force piston or drive piston into
cylinder bore. Install using only finger
pressure.
8. Carefully install the connecting rod and piston
so that the arrow on the piston points toward
the front end of the engine
(Figure 5-59)
.
Figure 5-60
9. Remove special tool
(Figure 5-60)
.
10. Check bearing oil clearance before proceeding.
See Measuring Oil Clearance on page 5-63.
000
3
5
8
6
000
3
5
8
5
Summary of Contents for BY series
Page 1: ...BY series 4BY 6BY SERVICE MANUAL...
Page 2: ...BY Service Manual BY series SERVICE MANUAL 4BY 6BY P N 0BBY0 G00100 MARINE ENGINES...
Page 5: ...TABLE OF CONTENTS iv 4BY 6BY Service Manual This Page Intentionally Left Blank...
Page 7: ...INTRODUCTION 1 2 BY Service Manual This Page Intentionally Left Blank...
Page 21: ...SAFETY 2 14 BY Service Manual Safety Precautions This Page Intentionally Left Blank...
Page 131: ...FUEL SYSTEM 6 2 BY Service Manual This Page Intentionally Left Blank...
Page 159: ...FUEL SYSTEM 6 30 BY Service Manual Repair This Page Intentionally Left Blank...
Page 161: ...COOLING SYSTEM 7 2 BY Service Manual This Page Intentionally Left Blank...
Page 181: ...COOLING SYSTEM 7 22 BY Service Manual Repair This Page Intentionally Left Blank...
Page 183: ...LUBRICATION 8 2 BY Service Manual This Page Intentionally Left Blank...
Page 199: ...LUBRICATION 8 18 BY Service Manual Repair This Page Intentionally Left Blank...
Page 201: ...TURBOCHARGER 9 2 BY Service Manual This Page Intentionally Left Blank...
Page 211: ...TURBOCHARGER 9 12 BY Service Manual Repair This Page Intentionally Left Blank...
Page 213: ...STARTER MOTOR 10 2 BY Service Manual This Page Intentionally Left Blank...
Page 221: ...ALTERNATOR 11 2 BY Service Manual This Page Intentionally Left Blank...
Page 261: ...ELECTRICAL AND ECU 12 34 BY Service Manual Repair This Page Intentionally Left Blank...
Page 263: ...TROUBLESHOOTING 13 2 BY Service Manual This Page Intentionally Left Blank...