TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
Page 534 of 779
Figure 7-30 c. Install Rocker Arm Covers. The camshaft lobes (cams) for cylinder No. 1R must be down towards crankshaft, so valve rocker arm rollers are on base circle of camshaft as shown in figures 7-27 and 7-28 before installing rocker arm cover. The identification number stamped on rocker arm cover must match the number stamped on cylinder assembly (fig. 5-105). Rocker arm covers must always be installed on their mating cylinder assemblies. Note. For instructional purposes. installation of rocker arm cover for cylinder No. 1R is used. Remaining covers are installed in the same manner. (1) Remove protective cover from fuel injector nozzle and holder opening in cylinder assembly. Apply a light film of sealing com- pound (MIL-C-10523 Ord.) to valve rocker arm cover and install cover. Refer to figure 5-109 and torque tighten four bolts to 275 to 325 pound- inches. Refer to figure 5-108 and torque tighten all bolts and cap screws to 100 pound-inches. (2) Set valve clearance of No. 1R intake valve to 0.010-inch using thickness gage blade - 5210-793-7898 as shown in figure 7-22. (3) Set valve clearance of No. 1R exhaust valve to 0.025-inch using thickness gage blade - 5210-793-7899 as shown in figure 7-23. (4) Rotate crankshaft as necessary to position camshaft lobes (cams) in downward position (figs. 7-27 and 7-28) as each of the remaining valve rocker arm covers are installed. 7-22