TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 ACCESSORY DRIVE HOUSING REPLACE/REPAIR 0158 00 CLEANING 1. See Work Package 0028 for Standard Cleaning Procedures. INSPECTION All parts must be inspected with care. Replace parts if damage or wear exceeds allowable limits. 1. See Work Package 0028 for Standard Inspection Procedures. 2. Measure inside diameter of accessory drive (9) bearing bore. a. Install bearing cap (20) and secure using two nuts (18) with flat washers (19). b. Tighten two nuts (18) to 275-300 inch-pounds. c. Measure inside diameter (A). d. Replace housing and bearing cap if not within specifications in the following table. 3. Measure inside diameter (B) of liner in rear fan drive housing (8). Replace housing if not within specifications in the following table. 4. Measure inside diameter (C) of small upper liner in housing (8). Replace housing if not within specifications in the following table. 5. Measure inside diameter (D) of large upper bearing bore in housing (8). Replace housing if not within specifications in the following table. Location Sizes and Fit of New Parts inches (mm) Wear Limits A (accessory housing bore) 2.3770 (60.3758) 2.3780 (60.4012) 2.3790 (60.4266) B (liner, rear fan housing) 2.4409 (61.9989) 2.4416 (62.0166) 2.4419 (62.0243) C (upper liner, rear fan housing) 1.1440 (29.0576) 1.1460 (29.1084) 1.1465 (29.1211) D (bearing bore) 2.9528 (75.0011) 2.9535 (75.0189) 2.9538 (75.0265) 20 19 18 9 8 C D B A WP 0158 00-10