TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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(3) Check valve crankshaft clockwise as timing by rotating viewed from rear, ap- proximately 1 / 8 turn to remove gear backlash, then turn counterclockwise until the valve is just closed. Stop rotating the crankshaft the instant the swivel pad becomes free. Observe position of flywheel timing mark. When timing mark on flywheel is alined within 1 / 8-inch of the timing pointer, the valve timing is correct. When timing mark is not alined, withdraw camshaft drive shaft, and repeat timing procedure ((2) above) and again check valve timing. When correct valve timing is obtained, install right oil transfer plug following instructions in figure 7-26. Note. When correct timing cannot be obtained as described in (3), above, it may be necessary to set timing mark 1 / 8 to 1 / 4-inch out of alinement before installing drive shaft. (4) Set cylinder No. 6 intake valve clearance by rotating crankshaft counterclockwise ap- proximately 1 / 4 turn in order to have No. 6R intake valve rocker arm roller on base circle of camshaft. Set intake valve clearance to final 0.010-inch setting, using thickness gage blade - 5120-793-7897 as shown in figure 7-22. Torque tighten adjusting screw lock nut to 175 pound- inches after adjustment. (5) Rotate the crankshaft counterclockwise approximately 270 degrees from “6L INT CLOSE .100 CLR” until flywheel timing mark “6R INT CLOSE .100 CLR” is alined with timing pointer. Install the left camshaft and No. 6L valve rocker cover following same procedure as outlined for right camshaft and No. 6R valve rocker cover. (6) Refer to figure 5-111 and install the camshaft gear housing covers, using new mounting gaskets. b. Fuel Injection Pump and Timing. Refer to figures 4-63 and 4-64 to install coupler half on fuel injection pump. Torque tighten nut to 900 pound-inches. Refer to figures 4-71, 4-72, 4-65 through 4-68, and 4-75 through 4-81. Additional pertinent instructions are listed below. Figure 7-27. Correct position of cylinder 1R camshaft lobes (cams) for fuel injection pump installation-installed view. 1. Install right oil transfer plug using mechanical puller- 5120-678-5282. 2. Refer to figure 5-112 and install retaining ring. Figure 7-26. Installing right camshaft oil transfer plug. 7-20