CHECKING MAIN BEARING CLEARANCE.
This task covers:
a. Checking Main Bearing Clearance
l Engine removed. (See paragraph 3-3)
Gaging plastic (Item 35, Appendix B)
l Engine oil pump removed.
Lubricating oil (Item 49, Appendix B)
(See paragraph 3-33)
l Torque wrench
CHECKING MAIN BEARING CLEARANCE
DO NOT remove main bearings (4) from main bearing caps (1) until
main bearing clearancence has been checked.
l Ensure that main bearing caps (1) are marked for installation.
Ensure that crankshaft (5) is facing up for this task.
Remove 2 inner bolts (3), 2 outer bolts (2), and main bearing #3 cap (1). Wipe oil from
crankshaft (5) journal and main bearing #3 cap.
Cut a piece of gaging plastic (6) the width of main bearing (4). Install gaging plastic parallel to
crankshaft (5) on crankshaft journal.
3 - 44