Crankshaft and Connecting Rods
Install new bolts and nuts in reused connecting rods.
If the connecting rod assy was replaced, use the bolts and
nuts attached to the new connecting rod assy.
Apply a small amount of molybdenum disulfide oil solution
to the following portions.
Threads [A] of Bolts and Nuts
Seating Surfaces [B] of Nuts and Connecting Rod Caps
First, tighten the nuts to the specified torque. See the
Next, tighten the nuts 120° ±5° .
Mark [A] the connecting rod big end caps and nuts so that
nuts can be turned 120° [B] properly.
Tighten the hexagon nut by 2 corners.
Use the bolts
bolts with new
Crankshaft/Connecting Rod Cleaning
After removing the connecting rods from the crankshaft,
clean them with a high flash-point solvent.
Blow the crankshaft oil passages with compressed air to
remove any foreign particles or residue that may have
accumulated in the passages.
Connecting Rod Bend Inspection
Remove the connecting rod big end bearing inserts, and
reinstall the connecting rod big end cap.
Select an arbor [A] of the same diameter as the connect-
ing rod big end, and insert the arbor through the connect-
ing rod big end.
Select an arbor of the same diameter as the piston pin
and at least 100 mm (3.94 in.) long, and insert the arbor
[B] through the connecting rod small end.
On a surface plate, set the big-end arbor on V block [C].
With the connecting rod held vertically, use a height
gauge to measure the difference in the height of the
arbor above the surface plate over a 100 mm (3.94 in.)
length to determine the amount of connecting rod bend.
If connecting rod bend exceeds the service limit, the con-
necting rod must be replaced.
Connecting Rod Bend
Service Limit: TIR 0.2/100 mm (0.008/3.94 in.)
Torque + Angle
N·m (kgf·m, ft·lb)
22 (2.2, 16)
new con-rod + 120°
20 (2.0, 15)
26 (2.7, 19)
26 (2.7, 19)