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TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download

Page 160 of 779

Note. Valve rockers do not have to be removed to replace adjusting screws. Figure 4-158. Removing or installing valve adjusting screw. Figure 4-159. Removing or installing rocker arm shaft plugs. valve Figure 4-160. Removing valve rocker arm shafts and valve rocker arms. 1. Position valve rocker arms in reeker arm cover. Insert valve rocker arm shaft ( A ) through bore in rocker arm cover and rocker arm. 2. Use one rocker arm cover bolt (B) to a line hole in shaft with bolt hole in cover. Push shaft into position, without twisting, to retain alinement. Note. Under normal circumstances, if rocker arm cover is damaged, the entire cylinder and cover must be replaced. In cases of emergency. the rocker arm covers can be changed hut it will require special attention to insure alinement of the two halves of the camshaft base. Figure 4-161. Installing valve rocker arms and valve rocker arm shafts. 4-78