MBE 900 OPERATOR'S GUIDE be repositioned after each cylinder is adjusted as listed in Table 26. 1. For each cylinder, use the cranking device to rotate the crankshaft until the piston is exactly at top dead center (TDC) in the compression stroke. The valves must be closed and it must be possible to turn the push rods without effort. NOTE: When the piston in cylinder #1 is at ignition TDC, the valves of cylinder #6 (cylinder #4 on the four-cylinder engine) will overlap, meaning that both intake and exhaust valves are partially open, and show no measurable play when tested with a feeler gauge. Figure 36 Cylinder and Valve Layout Method One:
Adjust Each Cylinder In Firing Order Method One allows you to adjust each cylinder in the order in which fuel is injected. The crankshaft must 2. Check each valve and adjust it (if necessary), using the procedures under the headings "Checking Valve Lash" and "Adjusting Valve Lash" in this section. Table 26 Valve Adjustment- Method One All information subject to change without notice. (Rev. 04/08) 81 DDC-SVC-MAN-0055 04/08 Copyright © 2008 DETROIT DIESEL CORPORATION Engine Crankshaft Position Cylinders 4-Cylinder Ignition Sequence 1 3 4 2 NA NA Valve Overlap 4 2 1 3 NA NA 6-Cylinder Ignition Sequence 1 5 3 6 2 4 Valve Overlap 6 2 4 1 5 3