TM 9-2320-366-34-4
e. Installation.
CAUTION
• Ensure main bearing tabs engage grooves in block and cap. Permanent damage to engine could occur
if bearings are not properly installed. Failure to comply may result in damage to equipment.
• Ensure new bearings are installed as a matched set to each corresponding journal and cap. Permanent
damage could occur if bearings are not from same set. Failure to comply may result in damage to
equipment.
NOTE
Number six bearing is crankshaft thrust bearing. Upper (or block) half of main bearings two, three, five,
and six are slotted for oil flow to connecting rod bearings. Ensure no oil is allowed on back of bearings.
(1) Install thrust bearing (1) in No. 6 journal of cylinder block
(2).
(2) Install other half of thrust bearing (1) in No. 6 crankshaft
main bearing cap (3).
(3) Perform step (1) for six remaining main bearing halves
in journals of cylinder block (2).
(4) Perform step (2) for six remaining main bearing halves
in corresponding crankshaft main bearing caps (3).
CAUTION
Do not get oil on backs of main bearing
halves. Failure to comply may result in
damage to equipment.
(5) Lubricate face of all main bearing halves (1) in cylinder
block (2).
(6) Lubricate face of main bearings (1) in crankshaft main
bearing caps (3).
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