TM 9-2320-289-343-14. CHECKING MAIN BEARING CLEARANCE (Con’t).7.Usingsoft-faced hammer,forcecrankshaft (5) to extreme rearwardposition, then to extreme forwardposition.Using feeler gage (9),measure end play at front end ofmain bearing #3 (4). Maximum endplayshouldbe0.015 in.(0.381 mm).If end play exceedsspecifications, and main bearing #3was replaced in step 6, replace mainbearing #3 and retest. If end play stillexceedsspecifications,replacecrankshaft. (See paragraph 3-1 5)8.Repeat steps 1-6 for other mainbearings (4).9.Rotate crankshaft (5) to ensure thatmain bearings (4) are not dragging.FOLLOW-ON TASKS:l Install engine oil pump. (See paragraph 3-33)l Replace rear main seal. (See paragraph 3-34)l Install engine. (See paragraph 3-29)TA506573 - 4 6
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