TM 10-3930-660-34 3-6. CYLINDER BLOCK - REPLACE (Cont’d) NOTE When installing cup plugs (5),apply Loctite #277. 5. INSTALL THREE NEW CUP PLUGS (5) IN OIL PASSAGES. a. Apply a bead of Loctite #277 to entire circumference of each new cup plug (5). b. Using a drift and a hammer, install new cup plugs (5) with convex side out and until outer edges are flush with countersink in block. 6. INSTALL TWO PIPE PLUGS (3) AND ONE PIPE PLUG (4). a. Apply small amount of Loctite #59241 to threads of all three pipe plugs (3 and 4). b. Install pipe plugs (3 and 4) and tighten to 120 lb. in. 7. INSTALL CAMSHAFT EXPANSION PLUG (2). a. Apply a bead of Loctite #277 to entire circumference of each expansion plug (2). b. Place expansion plug (2) in bore with convex side out. c. Drive against convex side of expansion plug (2) using a large drift and a hammer to expand plug. Continue to drive against convex side of plug until convex side of plug is flush with face of cylinder block. 3-34