1.3 VALVE AND INJECTOR OPERATING MECHANISM 6. To remove the valve button or valve button retaining clip, the valve adjusting screw must be removed from the rocker arm as follows: NOTICE: To avoid possible component damage, the valve button retainer MUST NOT be expanded more than 15.5 mm (0.610 in.). An adjusting screw is provided on the expander tool to limit the amount of travel. [a] Spread the retaining clip with expander and remove the button. See Figure 1-57. Figure 1-57 Valve Button Retainer Clip Removal [b] Slide the retaining clip, open end first, down the adjusting screw.
It is necessary to spread the clip slightly so that the open end can pass over the ball head of the adjusting screw. [c] Insert the tips of the expander (J–36347) between the legs of the retaining clip and expand the clip. [d] Insert the groove on the valve button into the legs of the retaining clip. [e] Remove the expander and hold the legs of the retainer with the thumb and index finger. [f] Press the valve button towards the screw to seat both legs of the retainer completely in the groove. 7. If further disassembly is necessary, slide the rockers off the shafts, marking or segregating the parts so that they may be reinstalled in the same position from which they were removed. NOTE:
Front and rear rocker arm shaft sections look identical, but must not be reversed, and must be installed as removed, due to bolt hole center line distances. The DDC logo is (Rev. 2005) All information subject to change without notice. 1-70 6SE483 0507 Copyright © 2005 DETROIT DIESEL CORPORATION