TM 5-4310-386-145-44. Engine Connecting Rod (Cont).b.Repair. (figure 5-67)(1)Remove connecting rod (para. a. above).WARNINGDry cleaning solvent PD-680 used to clean parts is potentially dangerous to personnel andproperty. Avoid repeated and prolonged skin contact. Do not use near open flame or excessiveheat. Flash point of solvent is 138°F (60°C).(2)Clean all items with dry cleaning solvent, and dry thoroughly.(3)Inspect bushing (1) and bearing shell (2) for excessive wear or damage.(4)Measure inside diameter of piston pin bushing (1) (small end of connecting rod) with insidemicrometer. Measure at points 1 and 2 in planes a and b. Should measure maximum 1.3835 inches(35.19 mm). If measurement is greater than specified, replace bushing.(5)Pull out piston pin bushing (1) with fixture.(6)Pull in piston pin bushing with same fixture making sure oil bores in bushing and connecting rod areperfectly aligned.(7)Position big-end bearing cap (2) on connecting rod (3) making sure they bear same identificationnumber.(8)Install two bolts (4) and tighten per Appendix F.(9)Measure inside diameter of big-end bore at points 1 and 2 in planes a and b using inside micrometer.(10)If measurement is less than 2.3047 inches (58.539 mm) replace connecting rod (3) and big-end caps(2).NOTEThe big-end bearings are available in six sizes (in increments of .0098 inches (0.25 mm) andcannot be reconditioned.(11)If measurement is between 2.3046 to 2.3538 inches (58.539 to 59.789 mm) install new big-endbearings.(12)Remove bearing cap, install new big-end bearings and retighten per Appendix F.(13)Remeasure inside diameter of big-end bore with inside micrometer. Should measure not greater than2.3637 inches (60. 039 mm).(14)Remove big-end caps and bearings.5-186
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
