Detroit Diesel MBE 4000 Service Manual page 532

12.1 VALVE LASH CHECKING
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4. Using the cranking tool (J 46167 or 407 589 00 63 00), turn the crankshaft until cylinder
#1 is at the ignition TDC position (all valves are closed) and cylinder #6 is at the valve
overlap position (all valves are open).
NOTE:
When the piston in cylinder #1 or #6 is at ignition TDC, there will be a small bevelled
alignment mark visible through the inspection hole. See Figure 12-6.
Figure 12-6
5. Check the valves in the "Ignition TDC" row listed in Table 12-3, and adjust them
(if necessary), using the procedures under the headings "Checking Valve Lash" and
"Adjusting Valve Lash."
Cylinder #1
Engine Crankshaft
Position
Ignition
MBE 4000
TDC
Valve
MBE 4000
Overlap
* I= Intake Valve and E= Exhaust Valve
Table 12-3 Valve Adjustment (Method Two)
12-8
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Flywheel Alignment Mark
Cylinder Cylinder
Valves/Types* Valves/Types*
1 2
I/E I
— E
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Cylinder Cylinder
Valves/Types* Valves/Types*
3 4
E I
I E
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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Cylinder Cylinder
Valves/Types* Valves/Types*
5 6
E —
I I/E
All information subject to change without notice.
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