ARMY TM9-2805-262-14
AIR FORCE TO 38G2-90-1
NAVY NAVFAC P-8-613-14E
6-13. Crankshaft and Center Main Bearing.
This task covers:
a. Removal
b. Inspection
c. Installation
INITIAL SETUP
Tools
Materials/Parts
General Mechanic’s Tool Kit (Item 1, Appendix B)
Lockwasher, Tab (P/N 9786E113-2)
Snap Ring Pliers
Screw with Washer Main Bearing
Wrench, Torque (NSN 6110-00-853-4538) (Item 5,
(P/N 13218E0504-70)
Appendix B)
Equipment Condition
Materials/Patts
Oil pan removed (para.5-20).
Rags, Wiping (Item 7, Appendix D)
End cover removed (para.6-9).
Solvent, Drycleaning (Item 8, Appendix D)
NOTE
Engine is upside down for these procedures.
a. Removal. (figure 6-8)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
Bend tangs on Iockwasher (1), and remove two bolts (2) and connecting rod bearing cap (3).
Push piston and connecting rod (4) into top of cylinder (5).
Repeat steps 1 and 2 for remaining pistons.
Using suitable snap ring pliers, remove two retaining rings (6).
Remove camshaft gear (7).
Remove screw (8) and washer (9) securing center main bearing (10).
Remove crankshaft (11) with center main bearing (10).
Remove two screws (12) and washers (13) and remove center main bearing (10).
b. Inspection.
Drycleaning solvent PD-680 used to clean parls is potentially dangerous to personnel and
property, Avoid repeated and prolonged skin contact. Do not use near open flame or
excessive heat. Flash point of solvent is 100°F-138°F (38°C-60°C).
6 - 18
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