TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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TM 9·281220 edges of scratches. Minute pieces of metal and dirt particles embedded in bearing surfaces are not cause for rejection. l High oil pressure transmitter 2 Tee S Π פelw 4 Auxiliary generator high oil pressure switch 5 Po פelw 6 Bushing 7 Nipple Figure 3-150.1. Preuttre tranamitter and preaaure Bwitch - up/ed view, model AVDS-1790-tDR e11gi11e. I I I I \ 4 l Pipe plug 2 Inse screw thread S Inse screw thread I NOTE Do not attempt to remove such particles. However, if a concentration of embedded particles affects five percent of the sur- face, replace the bearings. d. Stud (Tie Rod) Torque and Main Beatng Bore Inspection. NOTE Main bearing sleeve halves should be in- stalled in their original location when they are to be reused. Use new bearings when a visual inspection indicates bear- ings are unserviceable. Use only new or serviceable bearings for main bearing bore check. (1) Install crankcase on engine overhaul stand using a rope sling (fig. 3-147) and secure with four bolts and flat washers. (2) Check main bearing cap stud torque using a torque wrench as shown i n figure 3-152. Torque on studs must be 460 pound-inches. Studs that do not tighten to specified torque must be removed for further inspection. Refer to table 3-2 when replac- ing studs. NOTE Never tighten main bearing studs above recommended torque. I I ,/ 3 4 Π פplug 5 Inse screw thread 6 Insrt screw th read TA021745 Figure 3·151. Crankcase a+d associated pai'ts -explotle<l ·view. 3·70 ange 1 ) )