TM 5-4320-300-14
6-12. BEARINGS (CONT)
Location/Item
Action
Remarks
CLEANING OF
BEARING SHELLS
WARNING
Severe burns, illness, or death may result if personnel fail to handle diesel fuel properly. Observe
the following precautions:
* Do not inhale vapor.
* Work in a well-ventilated area.
* Do not use near open flame, sparks, or excessive heat.
Compressed air used for cleaning shall not exceed 100 psi (690 kPa). Use goggles or face shield
for eye protection. Do not direct airstream against skin.
3.
All main
Wash in clean VV-F-800 diesel fuel and dry with
bearing shells
compressed air.
INSPECTION OF
BEARING SHELLS
4.
Bearing shells
Inspect for scoring, pitting, flaking, etching, loss
Bright spots indi-
of babbit, signs of overheating, and bright spots
cate that shells
on backs of shells. Replace bearings that are
have been moving
damaged, show excessive wear, or have bright
in caps.
spots.
5.
Bearing shell
If bearing shells are free of
thickness
excessive wear, bright spots,
and damage, measure shell
thickness. Shells should not
be less than 0.1230 inch
(3.1242 mm) thick. If any
bearing shell measures less
than 0.1230 inch (3.1242
mm), replace all bearing
shells.
6.
Bearing shell
Position upper main bearing shells in bearing
and crankshaft
supports. Lubricate crankshaft main bearing
journal prepa-
journals with MI L-L-2104 oil.
ration
6-116
