Detroit Diesel MBE 4000 Service Manual page 206

1.19 VALVES
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Valve seat diameter at the contact surface of the cylinder head (B)
Valve head diameter (C)
Valve seat height (D)
Valve seat width at the valve head (E)
Valve seat angle (F)
Valve length (G)
Figure 1-122
Description
Valve Stem Diameter (A)
Valve Seat Diameter, at Head
Contact Surface (B)
Valve Head Diameter (C)
Valve Seat Height-New (D)
Minimum Valve Seat Height-After
Grinding (D)
Valve Seat Width, at Valve Head (E)
Valve Seat Angle (F)
Valve Length (G)
Table 1-42 Valve Removal/Installation Specifications in mm (inches)
13. Check the condition of the valve seat insert. Repair the valves if necessary.
1-158
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Critical Dimensions, Valve Stem and Head
Intake
8.935-8.950 (0.3518-0.3524)
42.0 (1.65)
45.4-45.6 (1.79-1.80)
3.1-3.3 (0.12-0.13)
2.9 (0.11)
3.5-4.5 (0.14-0.18)
30 degrees
145.0 (5.71)
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Exhaust
8.925-8.940 (0.3514-0.3520)
39.0 (1.54)
40.9-41.3 (1.61-1.63)
2.8-3.1 (0.11-0.12)
2.3 (0.09)
3.5-4.5 (0.14-0.18)
45 degrees
145.0 (5.71)
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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