ARMY *TM 9-6115-464-34 AIR FORCE TO-35C2-3 ... - Igor Chudov

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ARMY TM 9-6115-464-34AIR FORCE 35C2-3-445-2NAVY NAVFAC P-8-624-34(7) If necessary, regrind crankshaft bearing journals to accept undersized bearings in accordance withTable 3–3.(8) inspect crankshaft gear for cracks and chipped, broken or excessive worn teeth.(9) lf replacement of crankshaft gear is necessary, proceed as follows:(a) Support crankshaft gear in arbor press and press crankshaft and woodruff key from gear.(b) Heat replacement gear in an oven at 450°F. (232.2 °C.) for approximately one hour.(c) Install woodruff key into crankshaft.CAUTIONWear heavy heat resistive asbestos gloves to avoid serious burns when handlingheated gear. Failure to observe this caution could result in equipment damage.(d) Remove gear from oven and assemble onto crankshaft.(e) Using a driver with an inside diameter of 2 inches, quickly drive gear into position,(f) Allow crankshaft and gear to cool.(10) Inspect connecting rod for cracks, breaks and excessively worn or damaged bushing.(11) Check piston pin for nicks, burrs, cracks, and excessive wear.(12) Remove minor nicks and burrs from piston by polishing with crocus cloth. Clean to remove abrasiveresidue.(13) If necessary, replace both piston pin and bushing.NOTEIf new piston pin and bushing are used, check connecting rod alignment on a standardaligning fixture.(14) Inspect piston for deep scores and scratches and other damage.(15) Insert each piston into its cylinder bore with a piece of 1/2 x 0.0050 feeler ribbon. A force of 5 to 8pounds should be required to remove each ribbon. Replace all pistons if any are not within therequired limits.NOTECylinder bores may be rebored to accept oversized pistons (paragraph 3-55).(16) Fit each piston ring into place into its cylinder bore and using a feeler gauge, measure gapdimension. Gap shall be 0.0100 to 0.0200 inch. If gap is under 0.0100 inch, file as follows:(a) Hold a file in a vise.(b) Grasp piston ring in both hands.(c) Insert file into ring gap and move ring down the entire length of the file. Be sure to apply equalpressure on the ring.(17) Roll each ring all the way around its piston groove to check clearance. If clearance is insufficient, lapthe sides of the ring on a piece of No. 000 grit emery cloth laid on a flat surface.3-124
ARMY TM 9-6115-464-34AIR FORCE TO 35C2-3-445-2NAVY NAVFAC P-8-624-34d. AssembIy.(1) Using a piston ring expander install oil control ring (23, figure 3-52), scraper ring (22) andcompression rings (21 ) onto pistons (24).NOTEIf replacement piston rings have dots on the rings, the rings should be installed with thedots toward the piston head.(2) Apply a light coat of engine oil to the bushing (19) and connecting rod (18) and press the bushinginto the connecting rod.(3) Fit piston assemblies (17) onto connecting rods (18) and insert piston pins (16). Install retaining rings(15).e. Installation.NOTEPrior to installation of piston assemblies inspect cylinder block (paragraph 3-57),camshaft (paragraph 3–55) and cylinder head (paragraph 3-54) prior to installation ofthe piston, connecting rods and crankshaft.(1) Install upper half of main bearings (7 and 11, figure 3-52) into cylinder block.(2) Carefully place crankshaft (12) into position.NOTESome of the bearings partially cover oil holes.(3) Place a short strip of plastic gauge on each main bearing journal.(4) Install lower half of main bearings, main bearing caps (6 and 10), Iockwashers (5 and 9) and screws(4 and 8).(5) lighten screws (4) to 100 ft.-lbs. torque. Tighten screws (8) to 130 ft.-lbs. torque.(6) Remove main bearing cap and lower half of main bearings. Check plastic gauge against standard todetermine main bearing clearance. Clearance shall be 0.0009 to 0.0034 inch.(7) If clearance is not within specified limits, grind crankshaft and install with undersized bearings(paragraph c (7) above).(8) When bearing clearances have been established, install lower half of main bearings and mainbearing caps ((5) above).NOTEApply a liberal coating of engine lubricating oil to inner surface of main bearings prior toinstallation.(9) Use a feeler gauge to check crankshaft end thrust clearance on center main bearing. End thrustclearance shall be 0.0050 to 0.0100 inch.(10) If end thrust clearance is not as specified, remove center main bearing and polish sides on a piece ofcrocus cloth. Clean to remove abrasive residue and apply a liberal coating of engine lubricating oilbefore installation.3-125
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(c)(d)(e)Pull all slack from the le
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ARMY *TM 9-6115-464-34 AIR FORCE TO-35C2-3 ... - Igor Chudov

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