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TM 5-2420-222-34
3-8.
CRANKSHAFT MAINTENANCE.
This Task Covers:
a.
Removal
d.
Assembly
b.
Disassembly
e.
Installation
c. Cleaning and Inspection
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Engine assembly removed (see paragraph 3-3).
•
Engine oil (Item 25, Appendix B)
•
Flywheel housing removed (see paragraph 3-10).
•
Rags (Item 28, Appendix B)
•
Engine oil pan removed (see paragraph 3-20).
•
Dry cleaning solvent (Item 31, Appendix B)
•
Fuel injection nozzles removed (see TM 5-2420-
•
Marker tags (Item 32, Appendix B)
•
Cylinder block plate removed (see paragraph 3-7).
222-20).
General Safety Instructions:
•
Cylinder block plate removed (see paragraph 3-7).
Dry cleaning solvent is flammable and must not be used
Tools/Test Equipment:
near open flame. Use only in a well-ventilated area.
•
General mechanic's tool kit
•
Compressed air used for cleaning purposes should
•
Field automotive shop set
never exceed 30 psi (207 kPa).
•
Hot oil gives off highly flammable fumes and must not
Personnel Required: Two
be used near open flame.
a.
REMOVAL
1.
Using pry bar and dial indicator, pry crankshaft (14) forward in engine block (3) and measure end play. End play
must be 0.0020-0.0230 in. (0.0508-0.5842 mm).
NOTE
•
The engine has four connecting rod bearing caps. Removal of all four is the
same. One Is shown. Repeat steps 2 through 9 for remaining connecting rod
bearing caps.
•
In step 2, use screw removed from crankshaft pulley.
2.
Install screw (15) in end of crankshaft (14).
3.
Using screw (15), rotate crankshaft (14) until desired connecting rod bearing cap (5) is accessible.
4.
Using cylinder ridge reamer, remove carbon ridge from cylinder sleeve (13).
5.
Remove two bolts (7) and washers (6) from connecting rod bearing cap (5) and connecting rod (11).
CAUTION
Lift connecting rod bearing cap out carefully. Careless removal may allow lower
sleeve bearing half to fall from bearing cap causing damage to lower sleeve
bearing half and crankshaft journal.
NOTE
Note location of stampings on connecting rod bearing cap to ensure proper
Installation.
6.
Remove connecting rod bearing cap (5) with assembled lower sleeve bearing half (4) from connecting rod (11)
and crankshaft (14).
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