ENGINEAIR COMPRESSOR PISTONModels 950BNS and 950BSINSTALL PISTON AND ROD12-10651. The gap for oil ring (1) and the gap for rings(2) is measured with the rings near the bot-tom in cylinder (12). The gap for each ringis .003 to .009 in. (0.08 to 0.23 mm).2. Install rings (1) and (2) on piston (3). Thegap for each ring must not be near thepiston pin bore and each gap must beapproximately 120° from the gap in thenext ring.3. Install pin (4) in piston (3) and rod (6).Install pin lock (7). The mark put on thepiston shows if the location of the piston onthe rod is correct.4. Put rod (6) and piston (3) into crankcase(11). Install rod cap (5). The marks put onthe rod cap and rod show the correct loca-tion of the rod in crankcase (11).5. Tighten bolts (9) to a torque of 35 to 40lb.in. (40.6 to 46.1 cm.kg). Bend lock (10)over bolt heads.6. Put a new gasket on both end cover (13)and cover (15) and install the covers andgaskets on crankcase (11).7. Put a new gasket (14) on cylinder (12) andput the gasket and cylinder on crankcase(11). The marks put on the cylinder andcrankcase, before the head assembly was re-moved, must be together.end by:TM 5-3805-258-24-2DISASSEMBLY AND ASSEMBLYAND RODa) install head assembly5-17
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