TB-9-2300-378-14 Technical Bulletin for Air Induction System M48 M60 Download
Page 98 of 296
TB 9-2300-378-14 (5) Install armored air cleaner as follows (fig. 4-24): CAUTION Armored air cleaner weighs approximately 600 pounds. NOTES This procedure is to be used for installation of the armored top loading air cleaner when it is moved from a workbench or skid to its mounting position on tank. Perform steps a thru g to both left and right sides of tank. (a) Install new gasket 8762779 and outlet elbow 8762789 (lt) or (rt) or 8762789-1 (rt) on new armored air cleaner (view A). Secure with 14 new locknuts MS21044-N6 following proper tightening sequence (view B) (same for left and right sides). Torque locknuts to 20-25 lb ft (27-34 N·m). (b) Install new gasket 8762775 and inlet elbow 10863871 (lt) or 10863874 (rt) on new armored air cleaner (view A). Secure with ten nuts MS21044-N6. Tighten nuts evenly in a cross pattern (view C). (c) Attach lifting sling 11658914 to three lifting eyes of armored air cleaner assembly 12251922-1 (lt) or 12231922-2 (rt) (view D). (d) Lift and guide air cleaner to vehicle and carefully guide air intake and outlet elbows through hull openings, ensuring that blower motor electrical lead is properly inserted through opening. NOTE On some tanks it will be difficult to properly position air cleaner on outriggers due to an interference with hull inlet elbow opening. If this occurs, grind away excess metal around hull inlet elbow opening until proper alignment of air cleaner mounting holes and outrigger holes exists. (e) Check for gap between air cleaner base plate and the outriggers. If a gap exists between the armored air cleaner base plate and the outriggers, use up to 3 washers MS20002-10 per bolt as shims to eliminate gap (view E). (f) Secure air cleaner to outriggers with six new bolts MS90728-165, six new washers MS21206-10, six new washers 10910174-18, and six new nuts MS51967-20 (view E). Before installation, apply primer MIL-S-46163, Grade F, and sealing compound MIL-S-46163 Type 1, Grade L to bolt and nut threads. Use two to three drops of sealing compound per bolt. Torque air cleaner mounting bolts to 195 lb-ft (265 N·m). (g) Remove lifting sling 11658914 from armored air cleaner. 4-38