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Page Title:
REMOVAL OF MAIN BEARING CAPS, CRANKSHAFT ASSEMBLY, AND MAIN BEARINGS |
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 (B) Remove and discard cap seals from
149. REMOVAL OF MAIN BEARING CAPS,
each side of rear main bearing cap.
CRANKSHAFT ASSEMBLY, AND MAIN
(C) Remove the remaining six main
BEARINGS
bearing cap screws and washers and
remove the caps and bearings in the
a. General. Three of the seven main bearing
same manner.
caps are marked for identification and proper
installation in cylinder and crankcase assembly.
The three marked caps are identical in appear-
Note. Keep bearing halves with their
ance and marked only for that reason. The caps
are marked 3, 5, and 6 starting with the bearing
respective caps as shown in figure 306.
cap third from front. No. 5 and 6 caps are
Check to see if bearings are identified.
between the center thrust and rear bearing caps.
If not, use grease pencil and mark
The front main bearing cap can be identified
bearing tab for installation purposes.
by the oil pump idler gear shaft and oil pump
The thrust bearing is distinctive and
positioning dowel pins. The front intermediate
i s not normally numbered as it is
main bearing cap can be identified by the oil
always installed in the No. 4 (center)
pump mounting surface. The center main bear-
bearing position.
ing cap is identified by its width and shoulder
for thrust bearing. The rear main bearing cap
can be identified by oil pan gasket surface and
two seals positioned on each side of cap.
b . Removal. Remove main bearing caps,
crankshaft assembly, and main bearings as
follows.
(1) Refer to figure 304 and remove the
rear main bearing cap screws.
(2) Figure 305. (A) Remove rear main
bearing cap and lower bearing half.
HALF FOR IDENTIFICATION.
(3) Figure 307. (A) Wrap a rope sling around
crankshaft journals as shown to balance
(B) Remove
assembly.
crankshaft
crankshaft assembly from cylinder and
crankcase assembly.
(4) Refer to figure 308 and remove the
REAR MAIN BEARING CAP AND
seven main bearing upper halves.
CAP SEALS.
182
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