TM 9-2320-289-34
3-14.
CHECKING MAIN BEARING CLEARANCE.
This task covers:
a. Checking Main Bearing Clearance
INITIAL SETUP:
Equipment Condition
Materials/Parts
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)
Tools/Test Equipment
l Torque wrench
a.
CHECKING MAIN BEARING CLEARANCE
NOTE
• 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.
1.
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.
2.
Cut a piece of gaging plastic (6) the width of main bearing (4). Install gaging plastic parallel to
crankshaft (5) on crankshaft journal.
TA60655
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