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

c. Inspection. Refer to paragraph 6-3, and to the limits specified in overhaul standards (table (1) through (3), below. 6-22). (1) Inspect the oil temperature gage (3) Inspect the main oil filter elements for transmitter and high oil pressure warning light plugged, coated, cracked, or damaged screens. switch for damaged threads or deformity. Check Inspect main oil filter cover handle and spring electrical circuit for continuity. for damage. Inspect auxiliary oil filter cover (2) Inspect oil presure regulator plunger, handle and support for damage. spring, and sleeve and bypass valve springs to Table 6-22. Crankshaft Damper and Oil Filter Housing Control Valves - Overhaul Standards Component Fig. No. — Oil pressure B-6 regulator plunger B-6 B-6 B-6 B-6 B-6 B-6 Oil filter and oil B-6 cooler pressure relief bypass valve springs Auxiliary oil B-6 filter bypass pressure relief valve spring Ref. letter B E B-E F C F-C D A G Point of measurement Inside diameter of sleeve (small) Outside diameter of plunger (small) Fit of plunger in sleeve (small) Inside diameter of sleeve (large) Outside diameter of plunger (large) Fit of plunger in sleeve (large) Valve spring: Approximate free length of spring Scale reading at 1.825 inch length Maximum solid height Bypass valve spring: Approximate free length of spring Scale reading at 2.81 inch length Maximum solid height Approximate free length of spring Scale reading at 1.75 inch length Maximum solid height Note. Refer to paragraph 6-3b for explanation of symbols. d. Repair. (1) To replace main oil filter cover handle (63, fig. B-6), remove spring (66), spread handle, and remove handle from cover. Spread new handle and install on cover with spring. To replace auxiliary oil filter cover handle (20) or support, spread handle and remove from cover. Remove rivet (22) and remove support from cover. Position new support in cover and install rivet. Spread new handle and install on cover. (2) Refer to paragraph 6-4e, table 6-23, and figure 6-113 when replacing studs. (3) Refer to paragraph 6-4c for general re- pair and welding instructions and (2) and (b), below, for specific information on welding repair of the crankshaft damper and oil filter housing. Sizes and fits of new parts 0.8125 0.8135 0.8095 0.8105 0.0020L 0.0040L 1.1865 1.1885 1.1840 1.1850 0.0015L 0.0045L 2.83 inch 29.3 lb ± 3 lb 1.284 inch 4.28 inch 52.3 lb ± 5 lb 2.261 inch 2.40 inch 9.12 lb ± 1.0 lb 0.988 inch Wear limits 0.8145 0.8085 0.0060L 1.1905 1.1830 0.0075L * * * * * * * * * * (a) Repair of housing is permissible to include replacement of metal cracks, or chips. Repair shall be accomplished to prevent oil leakage between compartments, cast in passages, and drilled passages. Repair shall not impair the normal oil flow pattern (fig. 6-112) or be re- strictive to the oil flow and shall not impair the normal functions of control valves and filtering functions. (b) After welding repair of the housing, visually inspect passages and compartments for obstructions and foreign material. Flow test passages to assure proper functioning and oil control. Leak test compartments and drilled passages and pressure check to 20 psi. 6-106