Crankshaft and Connecting Rods
Connecting Rod Removal
Split the crankcase (see Crankcase Splitting in this chap-
Remove the connecting rod nuts [A] and big end caps [B].
Mark and record the locations of the connecting rods
and their big end caps so that they can be reassembled
in their original positions.
Camshaft Chain [C]
Pistons [E] (see Piston Removal)
Discard the connecting rod bolts. To prevent dam-
age to the crankpin surfaces, do not allow the con-
necting rod bolts to bump against the crankpins.
Connecting Rod Installation
To minimize vibration, the connecting rods should
have the same weight mark.
Big End Cap [A]
Connecting Rod [B]
Weight Mark, Alphabet [C]
Diameter Mark [D]: "
If the connecting rods, big end bearing inserts, or
crankshaft are replaced with new ones, select the
bearing insert and check clearance with a plasti-
gage (press gauge) before assembling engine to be
sure the correct bearing inserts are installed.
Apply molybdenum disulfide oil solution to the inner sur-
face of the upper and lower bearing inserts [A].
Apply molybdenum disulfide oil solution to the threads [B]
and seating surface [C] of the connecting rod nuts.
Install the inserts so that their nails [D] are on the same
side and fit them into the recess of the connecting rod and
Wrong application of oil and grease could cause
" mark or no mark