TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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M 9-2815-220-34 b. fnst a ll ncw f ue l pu mp adaplc r gasket (20) and fuel pump a d a p te r Cl I) and secure with six self-locking nuts and llat washers. Install fuel check valve bracket and secure with two self-locking nuts and Oat washers. Install two oil filler element. upporcs (37). compression s p r in gs (36), s p ring scats (35), gnskcts (34), retainers (33) and secure with retainer rings (32). fnstall two new oil filler c le me nts (31). Install new oil filter cover gasket (30). Install oil filler cover (29) and secure with ten self-locking nuts (26) and fl a t washers (25). Install new oil filter pack i ng (28) and c;1pscrcw (27). c. Install new prermed packing (22, fig. 3-206) on damper housing oil drnin valve (23) ancl install I valve i n a d a p ter . Install new drain valve a d a p ter gasket (24) on oil drain valve adapter (25) and install adapter. d. Install valve plunger sleeve (l.2),valve plunger (13), sp1g (14) and stop (15). Install flat washers (16) a n d new gasket (17), cover (18) and secure with two self-loking nuts (20) anci flat washers (19). Install oil cool�r bypass valve plunger (4). Position bypass valve spring (3), on valve plunger and in- stall plug,(l) using new gasket (2). Install oil filter bypass aive plunger (7). Position bypass valve spring (8) on valve plunger (7) and install plug (10) using new gasket (9). Section XIII. REPAIR OF FRONT FAN DRIVE HOUSING AND CLUTCH ASSEMBLY 3-90. General This section covers the repair of the front fan drive housing and clutch assembly. Specific instrnctions on disassembly, cleaning, inspection, repair and assembly accompany the repair operations. Repair standards of individual components follow the in- spection procedures. Stud identification tables are included where applicable. 3-91. Disassembly a. Front Dri-ve Housing ancl Cove». (1) Cut locking wire (1, fig. 3-211) and remove six drilled head bolts and flat washers (2) attaching fan drive oil seal hous1g (3) to fan drive housing cover (4). Install two mechanical pullers, Part No. 5739997, in puller screw holes (5) and turn screws alternately to remove housing. Remove and dis- card gasket (6). NOTE Remove eight slotted nuts from front fan drive housing cover, four nuts were re- moved dm;ng removal of two fuel injector tube brackets. Remove four slotted nuts from rear fan drive housing cover, eight nuts were removed during removal of four injector tube brackets. (2) Remove slotted nuts (7) attaching fan drive housing cover (4) to fan drive housing assembly. Install three ddlled head bolts (), used to secure fan drive oil seal housing, and using bolts as puller screws, remove fan drive clutch and cover from front n drive housing assembly. (3) Using a suitable puller, separate clutch cover and bearing assembly from clutch assembly (fig. 3-213) and remove and discard preformed packing (7, fig. 3-212). 3· 122 Change 2 (4) Use a suitable arbor and an arbor press to remove clutch upper ball bearing from housing cover as shown in figure 3-214. (5) Remove vertical drive shaft oil seal (fig. 3-2 . 15) from fan drive oil seal housing. (6) Remove fout· cotter pins (18, fig. 3-216) and slotted nuts ( and remove the assembled fan drive bevel gearshaft, bearings and supports from fan drive h'��sing (2). Remove bearing support (16) from fron� g�arshaft ball bearing (19) and bearing support (35) from rear gearshaft ball bearing (22). 6 1 1 Locking wire 2 Drilled head bolt and nal washer 3 Fan drive oil seal housing 2 TA 1262251 4 Fan dve housing cover 5 Puller scr ew hole 6Gasket 7 Slotted nut Fi gure 3-!U J. Removing or in+talli+g fan drive oil seal housing and/cm dve clutch and coue. ) )