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TM 9-2320-386-24-1-2
0364 00
CRANKSHAFT AND BEARING SLEEVES MAINTENANCE (Contd)
CLEANING AND INSPECTION
.WARNING.
Skysol-100 mixture is combustible. Use mechanical ventilation whenever
product is used in a confined space, is heated above ambient
temperatures, or is agitated. DO NOT use or store near heat, sparks,
flame, or other ignition sources. 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 fifteen
(15) minutes or until irritation subsides. Inhalation may cause irritation
to upper respiratory passages. DO NOT have food or drink in the vicinity.
1.
Clean crankshaft (5), main bearing caps (1), and cylinder block journals (8) with Skysol-100.
2.
Inspect crankshaft (5) for scratches, nicks, bends, cracks, and breaks. Replace or repair crankshaft
(5) if scratched, nicked, bent, cracked, or broken.
3.
Measure connecting rod journals on crankshaft (5). Journal diameter should be 2.7559.0008 in.
(70.0000.020 mm). Repair or replace as necessary.
4.
Measure main bearing journals on crankshaft (5). Journal diameter should be 3.5433.0008 in.
(90.0000.020 mm). Repair or replace as necessary.
5.
Check crankshaft (5) for out-of-round condition. Replace or repair crankshaft (5) if condition exceeds
0.002 in. (0.0508 mm).
6.
Inspect main bearing caps (1) for scratches, nicks, bends, cracks, and breaks. Replace main bearing
cap(s) (1) if scratched, nicked, bent, cracked, or broken.
7.
Install main bearing caps (1) on cylinder block (7) with fourteen washers (3) and screws (2). Tighten
screws (2) 35-45 lb-ft (48-61 Nm).
8.
Measure inside diameter of main bearing cap bore. Inside diameter should be 3.7397-3.7407 in.
(94.987-95.013 mm). Replace main bearing cap(s) (1) if not within limits.
NOTE
Repeat steps 7 and 8 for new main bearing caps. If inside
diameter fails inspection, replace cylinder block.
9.
Remove fourteen screws (2), washers (3), and main bearing caps (1) from cylinder block (7).
INSTALLATION
1.
Install seven new lower bearing sleeves (6) on cylinder block journals (8).
2.
Install seven new upper bearing sleeves (4) on main bearing caps (1).
3.
Install lifting straps around crankshaft (5) and on lifting device.
4.
Raise crankshaft (5) from supports and position crankshaft (5) into cylinder block (7).
5.
Install seven main bearing caps (1) on crankshaft (5) and cylinder block (7) with fourteen
washers (3) and screws (2). Tighten screws (2) 35-45 lb-ft (48-61 Nm) from front of block to rear.
6.
Tighten screws (2) an additional 1/4-turn (85-95).
0364 00-4

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