Connecting Rod Inspection - Yamaha V star 1100 Owner's Manual

164
tab (B) on the bearing insert locks into the
cutout in the rod cap or connecting rod.
CAUTION
Each connecting rod has a Y em
bossed on one side (Figure 100). The
connecting rod must be installed so
this side faces the left crankshaft end
(the tapered end).
b. Apply engine oil to the connecting rod bear-
ing inserts.
c. If new bearings are going being installed,
check the connecting rod oil clearance as de-
scribed in this chapter.
d. Install the bearing caps so the numbers on the
rod and cap align with each other (Figure
99).
e. Apply a light-grade molybdenum disulfide
grease to the threads of the connecting rod
studs.
f. Tighten the connecting rod nuts evenly.
CAUTION
When torquing a connecting rod nut
to specification, once 43 N•m (32
ft. lb.) of torque is applied,tightening
cannot be stopped until the final
torque value is achieved. If tightening
is interrupted between 43 48 N•m
(32 35 ft. lb.), loosen the nut to less
than 43 N•m (32 ft. lb.), then tighten it
to 48 N•m (35 ft. lb.) in one continu
ous motion.
g. Using a beam-type torque wrench, tighten
each connecting rod nut to 48 N•m (35
ft.-lb.). Apply continuous torque when tight-
ening the nut from 43 N•m (32 ft-lb.) to 48
N•m (35 ft.-lb.). Do not stop tightening the
nut until the final torque specification is
reached.

Connecting Rod Inspection

When inspecting the connecting rods, compare
any measurements to the specifications in Table 1.
Replace any connecting rods that are damaged or
out of specification.
1. Check each connecting rod for obvious damage.
2. Check the small end bore (A, Figure 101) for
wear or scoring.
100
101
102
3. If necessary, take the connecting rod to a ma-
chine shop and check for straightness.
4. Inspect the bearing inserts (A, Figure 98) for ex-
cessive wear, scoring or burning. The inserts can be
reused if they are in good condition. If the bearing
will be discarded, note its color code.
5. Check the connecting rod studs (B, Figure 101)
for cracks or twisting.
6. Oil the piston pin and install it in the connecting
rod. Slowly rotate the piston pin and check for ra-
CHAPTER FIVE