Adjusting Valve Lash - Detroit Diesel MBE 4000 Service Manual

12.2

ADJUSTING VALVE LASH

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12.2 ADJUSTING VALVE LASH
Adjust the valve lash as follows:
1. If adjustment is needed, unscrew the locknut. See Figure 12-7. Turn the adjusting screw
until the valve lash is correct. Use the exact settings given in the "Adjust To" column
listed in Table 12-4.
1. Adjusting Screw
Figure 12-7
NOTE:
When adjusting the valves, adjust to the exact setting. Use the range only for checking
adjustment.
2. Tighten the locknut 50 N·m (37 lb·ft).
3. Check the valve lash again. Adjust again if necessary.
4. Install the cylinder head covers. Refer to section 1.1.2.
5. Remove the cranking tool (J 46167 or 407 589 00 63 00) from the inspection hole in the
flywheel housing.
6. Replace the end cover on the inspection hole and tighten the bolts 25 N·m (18 lb·ft).
12-10
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Valve Lash Adjustment
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2. Locknut
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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