Westerbeke 9.0 BCG Technical Manual page 60

Specified Value
Allowable Limit
Connecting Rod
Bend of rod per 3.94 inches (100 mm)
BCG4.0KW
0.0031 (0.08 mm)
BCG 6.5KW and BTG 9.0KW
0.0020 (0.05 mm)
Twist of rod per 3.94 inches (100 mm)
BCG4.0KW
0.0039 (0.10 mm)
BCG 6.5KW and BTG 9.0KW
0.0020 (0.05 mm)
Connecting rod bearing oil clearance - inches (mm)
BCG4.0KW 0.0008 - 0.0017
0.0031 (0.08 mm)
(0.020 - 0.0444 mm)
BCG 6.5KW and BTG 9.0KW
0.0008 - 0.0017 0.0028 (0.07 mm)
(0.020 - 0.044 mm)
Big end thrust clearance - inches (mm)
BCG4.0KW 0.0059 - 0.0098
0.0118 (0.30 mm)
(0.150 - 0.250 mm)
BCG 6.5KW - BTG 9.0KW 0.0059 - 0.0087 0.0118 (0.30 mm)
(0.150 - 0.220 mm)
Crankshaft
Crankshaft run-out - inches (mm)
0.0012 (0.03 mm)
Uneven wear of journal section - inches (mm)
0.0008 (0.02 mm)
Crankshaft bearing oil clearance - inches (mm)
BCG4.0KW
0.0008 - 0.0017 0.0031 (0.08 mm)
(0.020 - 0.044 mm)
BCG 6.5KW - BTG 9.0KW 0.0008 - 0.0017 0.0028 (0.07 mm)
(0.020 - 0.044 mm)
Side clearance - inches (mm)
BCG4.0KW 0.0008 - 0.0087 0.0118 (0.30 mm)
(0.020 - 0.220 mm)
BCG 6.5KW - BTG 9.0KW 0.0004 - 0.0063
0.0118 (0.30 mm)
(0.010 - 0.160 mm)
Balance Shaft
Thrust clearance - inches (mm)
BCG4.0KW 0.0012 - 0.0047 0.0079 (0.20 mm)
(0.03 - 0.12 mm)
BCG 6.5KW and BTG 9.0KW 0.0012 - 0.0051
0.0039 (0.10 mm)
(0.03 - 0.13 mm)
Balance shaft bearing oil clearance - inches (mm) 0.0010 - 0.0026 0.0039 (0.10 mm)
(0.025 - 0.066 mm)
Westerbeke Generators 54