Engine Assembly (Rev 1/97)
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8. Place a piece of plastigauge on each main bearing jour-
nal and install the main bearing caps in their proper
positions. The cast arrows on the main bearing caps are
labeled FW and should point to the rear (flywheel end)
of the engine. The main bearing cap with the thrust
bearings goes to the rear end of the engine. The main
bearing caps with numbers stamped on them go to the
middle of the engine with the main bearing cap marked
number one closest to the rear main bearing. The main
bearing cap with no number goes to the front end of the
engine.
9. Install and properly torque the main bearing cap bolts
(refer to Specifications).
Torque Main Bearing Cap Bolts
10. Remove the main bearing caps and check the plasti-
gauge to determine the clearance of each main bearing.
Refer to Specifications for the recommended main
bearing clearance.
11. Lubricate the main bearings, the main journals, and the
thrust bearings with engine assembly compound or
engine oil. Replace and torque the main bearing caps.
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Check Plastigauge
12. Use a dial indicator to check the crankshaft end play.
The wear limit is .0130 in. (0.330 mm). If the end play
is larger than the wear limit, the thrust bearings must be
replaced.
Check End Play
13. Install each piston on its respective connecting rod by
heating the piston in hot water and then pressing the
wrist pin into the piston and through the rod bushing.
Install the circlips. The swirl chamber on the top of the
piston must point toward the identification marks on
the connecting rod.
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