TM 5-1940-322-24
0156 00
CRANKSHAFT AND CRANKSHAFT GEAR REPLACEMENT (Contd)
NOTE
Both crankshafts and crankshaft gears are replaced the same
way. This procedure covers the replacement of one crankshaft and
one crankshaft gear.
REMOVAL
NOTE
Rotate engine so crankshaft faces up.
The main bearing caps should be numbered. If they are not, mark
them beginning with number one at the front of the engine, and
with number seven at the rear of the engine.
1.
Remove fourteen bolts (1) from main bearing caps (2).
CAUTION
Do not pry on the main caps to free them from the cylinder block.
Failure to comply may result in damage to equipment.
2.
Using two main cap bolts (1), remove main caps (2) from cylinder block (3).
WARNING
Do not detach lifting device from crankshaft until all crankshaft
weight is equally distributed and stable. An improperly supported
crankshaft may cause injury to personnel.
3.
Using lifting device, remove crankshaft (4) and crankshaft gear (8) from cylinder block (3).
4.
Remove upper main bearing halves (9) and lower main bearing halves (7) from cylinder block (3) and
main bearing caps (2).
5.
Using mechanical puller, remove crankshaft gear (8) from crankshaft (4).
6.
Using 3/16-in. pin, remove piston cooling nozzles (5) from cylinder block (3).
7.
Remove ring dowels (6) from main bearing caps (2).
CLEANING AND INSPECTION
1.
For general cleaning and inspection instructions, refer to WP 0013 00.
2.
Using nylon brush, clean crankshaft oil galley holes (10).
WARNING
Skysol 100 solvent is combustible; DO NOT use or store near
heat, sparks, flame, or other ignition sources. Use mechanical
ventilation whenever product is used in a confined space, heated
above ambient temperatures, or agitated. Keep container sealed
when not in use.
Contact with Skysol 100 may cause skin irritation. Use chemical-
resistant gloves. In case of skin contact, remove any contaminated
clothing and wash skin thoroughly with soap and water. Wash
contaminated clothing before reuse. Eye contact may cause
irritation, tearing, or blurring of vision. Use face shield or goggles
when eye contact may occur. In case of eye contact, flush eyes
with large amounts of water for at least 15 minutes or until
irritation subsides. Inhalation may cause irritation to upper
respiratory passages. DO NOT have food or drink in the vicinity.
Failure to comply may result in injury to personnel.
Compressed air source must not exceed 30 psi (207 kPa). Wear
eyeshields when cleaning with compressed air. Failure to comply
may result in injury to personnel.
3.
Rinse crankshaft (4) in Skysol 100 and dry with compressed air.
0156 00-2
