TM 9-6115-604-34NAVFAC P-8-633-34(4)Position the crankshaft (32) at BDC for the connecting rod being removed. If Wi connecting rods are beingremoved, start at No. 1 cylinder.NOTEOriginal equipment connecting rods, caps, and pistons are marked 1L through 6L for the leftbank and 1R through 6R for the right bank The numbered side of the piston and rodassemblies face the inspection holes. A replacement connecting rod or piston could,however, be unmarked. Be sure all assemblies are properly marked before removal.Figure 9-25. Inspection of Connecting Rods(5)Check for identifying marks on the connecting rod (4) and cap (3). If unmarked, steel-stamp the cylinder numberand bank location on the inspection hole side of both connecting rod (4) and cap (3). Be sure all connecting rodsand caps are marked before removal.(6)Loosen the connecting rod bolts (1) approximately 0.5 inch (13 mm) and tap the ends of the bolts alternately witha plastic mallet until connecting rod cap (3) is free of the dowels (12).CAUTIONDuring removal, be careful that the crankshaft journals and cylinder liners are not nicked bysharp edges on the connecting rod. Because of insufficient clearance between the crankshaftcounter weights, the crankshaft must be turned to allow clearance for removal of theconnecting rod assembles, To avoid crankshaft damage Install nylon guide pins In theconnecting rod and adhere to the following steps carefully.NOTEIf the connecting rod bearing shells (11) come out of the connecting rod and cap, remove thebearing shells and tape them together. Mark the bearing shells with a felt pen as to top andbottom, rod number, and bank location .(7)Remove the connecting rod bolts (1), washers (2), and cap (3). Install nylon guide pins 3375098 in theconnecting rod bolt holes.9-47
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