Bcg 4.0Kw, Bcg 6.5Kw And Btg 9.0Kw; Engine Service Specifications - Westerbeke 9.0 BCG Technical Manual

BCG 4.0KW, BCG 6.5KW AND BTG 9.0KW
ENGINE SERVICE SPECIFICATIONS
Cylinder Head
Lower gasket surface distortion - inches (mm)
BCG4.0KW
BCG 6.5KW and BTG 9.0KW
Grinding tolerance inches (mm)
BCG4.0KW
Manifold gasket surface distortion - inches (mm)
Valve seat width (I ntake and Exhaust)
BCG4.0KW
BCG 6.5KW and BTG 9.0KW
Valve seat angle
Valve seat recession allowable limit - inches (mm)
Valve Guide Bushing
Valve stem-to-bushing clearance - inches (mm)
Intake
BCG4.0KW
BCG 6.5KW and BTG 9.0KW
Exhaust
Valves
Valve seat width (Intake and Exhaust) - inches (mm)
Specified Value
0.0118 (0.3 mm)
0.0472 - 0.0629
(1.2 -1.6 mm)
0.039 - 0.071
(1.0 - 1.8 mm)
0.0016 - 0.0020
(0.040 - 0.070 mm)
0.0016 - 0.0028
(0.040 - 0.070 mm)
0.0018 - 0.0030
(0.045 - 0.075 mm)
BCG 4.0KW 0.0472 - 0.0629
(1.2 -1.6 mm)
BCG 6.5KW and BTG 9.0KW 0.039 - 0.071
(1.0 -1.8 mm)
Allowable Limit
0.0020 (0.05 mm)
0.0039 (0.10 mm)
4.949 ( Height)
(125.50 mm)
0.0039 (0.10 mm)
0.020 (0.5 mm)
0.0031 (0.08 mm)
0.0035 (0.09 mm)
0.0039
(0.10 mm)
51 Westerbeke Generators