MAINTENANCE Method Two: Adjust All Valves Using Two Crankshaft Positions Method two allows you to adjust all the valves using just two crankshaft positions. 3. Using the cranking device, turn the crankshaft until cylinder #6 (cylinder #4 on the four-cylinder engine) is at the ignition TDC position (all valves are closed) and cylinder #1 is at the valve overlap position (valves are open). 1. Using the cranking device, turn the crankshaft until cylinder #1 is at the ignition TDC position (all valves are closed) and cylinder #6 (cylinder #4 on the four-cylinder engine) is at the valve overlap position (all valves are open). 4.
Using the same procedure, check the valves listed in Table 27 in the "Valve Overlap" row and adjust them (if necessary), using the procedures under the headings "Checking Valve Lash" and "Adjusting Valve Lash." 2. Check the valves listed in Table 27 in the "Ignition TDC" row and adjust them (if necessary), using the procedures under the headings "Checking Valve Lash" and "Adjusting Valve Lash." * I = Intake Valve and E = Exhaust Valve Table 27 Valve Adjustment - Method Two 82 All information subject to change without notice. (Rev.
04/08) DDC-SVC-MAN-0055 04/08 Copyright © 2008 DETROIT DIESEL CORPORATION Engine Cylinder #1 Crankshaft Position Cylinders/Valve Types* 1 2 3 4 5 6 4-Cylinder Ignition TDC I/E I E — NA NA Valve Overlap — E I I/E NA NA 6-Cylinder Ignition TDC I/E I E I E — Valve Overlap — E I E I I/E