Detroit Diesel MBE 4000 Service Manual page 210

1.20 EGR VALVES
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Valve seat height (D)
Valve seat width at the valve head (E)
Valve seat angle (F)
Valve length (G)
Figure 1-125
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 1-44 Valve Removal/Installation Specifications in mm (in.) for non-EGR
and EGR engines
1-162
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Critical Dimensions, Valve Stem and Head for EGR Engines
Intake, mm (in.)
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-EPA 98,
mm (in.)
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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Exhaust-EPA 04,
mm (in.)
8.925-8.940 (0.3514-
0.3520)
39.0 (1.54)
41.9-42.3 (1.65-1.67)
3.0-3.3 (0.12-0.13)
2.9 (0.11)
min. 3.5 (0.14)
36 degrees
145.0 (5.71)
All information subject to change without notice.
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