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

Section IX. OVERHAUL OF REAR FAN DRIVE HOUSING AND CLUTCH ASSEMBLY AND ACCESSORY DRIVE HOUSING 6-41. General the fan drive housing oil passage. The housing a. This section covers the overhaul of the rear fan drive housing and clutch assembly and accessory drive housing. Specific instructions on disassembly, cleaning, inspection, repair, and as- sembly accompany the overhaul operations. Overhaul standards of individual components follow the inspection procedures. Stud iden- tification information is included in the repair procedures. Refer to the following table (table 6- 29 for applicable illustrations and instructions for overhaul operations. b. The rear fan drive housings on original production engines required an oil restrictor in was redesigned to eliminate the need for restrictors on improved design engines. It cannot be determined whether a housing has an oil restrictor unless the housing is completely disassembled, as the exposed end of the restrictor has the appearance of a hexagon socket head pipe plug. c. The clutch assembly used in the rear fan drive housing is the same as that used in the front fan drive housing. Refer to paragraph 6-39c for differences between piston actuated and mechanical clutch assemblies. Table 6-29. Rear Fan Drive Housing and Clutch Assembly Component Rear Fan and Accessory Drive Housing Assembly Rear Fan and Accessory Drive Housing Piston Actuated Clutch Assembly Mechanical Clutch Assembly Fuel Injection Pump Advance Assembly Para 6-42a Figs. 6-156 through 6-158 Para 6-42a Figs. 6-116 through 6-118, 6- 159 through 6- 172, 6-124 through 6-126 Para 6-40a Figs. 6-128, 6-130 through 6-132, 6- 134 through 6- 137, 6-146 Para 6-40a Figs. 6-129 through 6-131, 6- 133, 6-135,6-136, 6-138, 6-144, 6- 147 Figs. 6-173 through 6-186 and Accessory Drive Housing Cleaning Para 6-2 Para 6-2 Para 6-2 Para 6-2 Para 6-2 Inspection Repair Para 6-42c Table 6-30 Para 6-42c Table 6-30 Para 6-40c Table 6-26 Para 6-40c Table 6-27 Para 6-40c Table 6-31 Para 6-42c Table 6-32 Para 6-42c Table 6-32 Fig. 6-187 Para 6-40c Para 6-40c Para 6-42c Assembly Para 6-42d Figs. 6-158, 6- 157, 6-206, 6-156 Para 6-42d Figs. 6-205 through 6-202, 6- 190 through 6- 188, 6-206, 6-170 through 6-168, 6- 167 or 6-166, 6- 172, 6-164,6-162, 6-161, 6-159, 6- 155, 6-154; 6-153 through 6-151, 6- 157,6-156, 6-115, 6-114 Para 6-40d Figs. 6-149, 6-146 through 6-137, 6- 134, 6-132 through 6-130, 6- 128 Para 6-40d Figs. 6-147, 6- 145, 6-144, 6-138, 6-135, 6-133, 6- 1-31 through 6-129 Figs. 6-191, 6- 192, 6-181, 6-193 through 6-198 6-134