Westerbeke 7.0 KW BGC -60Hz Technical Manual page 32

Specified Value Allowable Limit
Valves (continued)
Valve head stock thickness (IN) 0.0394 - 0.0551 0.0354
(1.0 -1.4 mm) (0.9 mm)
(EX)
0.0512 - 0.0669 0.0433
(1.3 -1.7 mm) (1.1 mm)
Valve stem outer diameter (IN) 0.2740 - 0.2746 0.2732
(6.96 - 6.975 mm) (6.94 mm)
(EX)
0.2738 - 0.2744 0.2730
(6.955 - 6.970 mm) (6.935 mm)
Overa" length
(IN) 4.3756
(111.14 mm)
(EX)
4.3480
(110.44 mm)
Stem head recession 0.008
(0.2 mm)
Valve Spring
Free length
1.7795 -1.8110 1.7441
(45.2 - 46.0 mm) (44.3 mm)
Length as installed 1.4961
(38.0 mm)
Tension as installed 58.2 - 64.8Ib SO.71b
(26.4 - 29.4 kg) (23.0 kg)
Squareness 0.0630
(1.6 mm)
Valve Rocker Shaft and Rocker Arm
Rocker arm inner diameter
0.6299 - 0.6306 0.6313
(16.000 -16.018 mm) (16.035 mm)
Valve rocker shaft outer diameter 0.6287 - 0.6294
0.6281
(15.968 - 15.988 mm) (15.955 mm)
Shaft to arm oil clearance 0.0005 - 0.0020 0.0031
(0.012 - 0.050 mm) (0.08 mm)
Westerbeke Generators
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