TM 104320-318-14
6-9. MAINTENANCE OF CONNECTING ROD - (Cont)
(10) Check connecting rod bearing clearance as follows:
(a)
(b)
(c)
(d)
(e)
(9
(9)
(h)
(i)
(j)
Measure crankshaft journals. Record reading. Correct measurement is 1.6512-1.6508 in. (41.93-
42.0 mm). Maximum out-of-round is 0.0002 in. (0.005 mm). Maximum taper is 0.00012 in. (0.003
mm).
Install bearing shell (12) into bore of connecting rod (11).
Install bearing shell (10) into rod cap (7).
Install rod cap (7) on connecting rod (11) with bolts (6).
Apply oil to threads and contact surfaces of bolts (6).
Torque capscrews to 30 ft·lbs (40 N·m).
Using micrometer, measure inside diameter of connecting rod. Record reading.
Subtract reading in step (g) from reading in step (a) to determine bearing clearance.
Replace bearing shells (10 and 12) if correct clearance (0.0018-0.009 in. (0.046-0.229 mm)) is not
obtained.
Remove connecting rod bolts (6) and rod cap (7). Remove bearing shells (10 and 12).
(11) Inspect dipstick for damage. Replace if damaged.
c.
INSTALL.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
CAUTION
Ensure connecting rod cap has alignment mark to the connecting rod prior to
removal. Uneven wear will occur if connecting rod cap is reinstalled opposite from
original installation.
Install upper bearing shell (12) into bore of connecting rod (11 ) making sure alignment marks are aligned.
Lightly coat bearing shell (12) and crankshaft journal with oil.
Install connecting rod (11) onto crankshaft journal.
Insert bearing shell (10) into rod cap (7) making sure alignment marks are aligned.
Lightly coat bearing shell half (10) with oil.
Install rod cap (7) with new bolts (6) onto connecting rod (11).
Torque rod capscrews to 30 ft·lbs (40 N·m).
6-24
