Checking The Crankshaft And Connecting Rods - Yamaha XVZ13TF 1999 Service Manual

CONNECTING RODS AND PISTONS
4-93
EAS00395
CHECKING THE CRANKSHAFT AND CON-
NECTING RODS
1. Measure:
S crankshaft-pin-to-big-end-bearing
ance
Out of specification ! Replace the big end
bearings.
Crankshaft-pin-to-big-end-
bearing clearance
0.021 X 0.039 mm
The following procedure applies to all of the
connecting rods.
CAUTION:
Do not interchange the big end bearings and
connecting rods. To obtain the correct
crankshaft-pin-to-big-end-bearing
ance and prevent engine damage, the big
end bearings must be installed in their origi-
nal positions.
a. Clean the big end bearings, crankshaft pins,
and bearing portions of the connecting rods.
b. Install the big end upper bearing into the con-
necting rod and the big end lower bearing
into the connecting rod cap.
NOTE:
Align the projections a on the big end bearings
with the notches b in the connecting rod and
connecting rod cap.
c. Put a piece of Plastigauge on the crank-
shaft pin.
d. Assemble the connecting rod halves.
NOTE:
S Do not move the connecting rod or crankshaft
until the clearance measurement has been
completed.
S Apply molybdenum disulfide grease onto the
bolts, threads, and nut seats.
S Make sure that the "Y" mark 1 on the connect-
ing rod faces towards the left side of the crank-
shaft at #1, #3 cylinder.
S Make sure that the "Y" mark 1 on the connect-
ing rod faces towards the right side of the
crankshaft at #2, #4 cylinder.
S Make sure that the characters 2 on both the
connecting rod and connecting rod cap are
aligned.
ENG
clear-
clear-