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 TM 55-1905-223-24-5
(13) Tighten the capscrews on a main bearing cap on engines built with 3/4- diameter main bearing
capscrews to the following torque values:
(a) Tighten both to 90 ft-lb.
(b) Tighten both to 170 ft-lb.
(c) Tighten both to 255 ft-lb.
(d) Loosen both completely.
(e) Tighten again as described above.
(14) Replace the main bearing shells No. 1 through No. 6. (Repeat step (3) in this procedure to install each
bearing.)
NOTE
Main bearings No.
1 through No. 6 do not have thrust
(15) Measure the end clearance of the crankshaft as follows:
(a) Install a dial indicator to the oil pan flange.
(b) Put the tip of the gauge against the crankshaft counter weight.
(c) Push the crankshaft toward the rear of the cylinder block.
(d) Set the dial indicator at "0" (zero).
(e) Push the crankshaft toward the front of the cylinder block.
(16) If the end clearance is less than 0.007 inch (0.18 mm), do the following:
(a) Loosen the main bearing capscrew one turn.
(b) Push the crankshaft toward the front and then toward the rear of the cylinder block.
(c) Tighten the main bearing capscrews in the sequence shown in FIGURE 4-53 to the torque values
listed in step (1) or step (m) of this procedure.
4-96
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