Nanni T4.155 seriers, Workshop Manual

Page: 189 / 191

60300140 (
indice A
) 4 CYLINDERS WORKSHOP MANUAL 189/191
8. REINSTALL CRANKSHAFT BEARING CAPS
A. Reinstall the connecting rod cap on the crankshaft.
a. Match the numbered caps with numbered connecting rods
b. Make the front mark correspond to the front and reinstall
the connecting rod cap.
B. Reinstall the connecting rod cap bolts.
ADVICE:
* The connecting rod cap assembly bolts are tightened in
two gradual steps (step (b) and step (d)).
* Replace the connecting rod cap bolts, which are broken
or deformed.
a. Lightly coat the thread on the top of the connecting rod cap
bolt heads with engine oil.
b. Reinstall and alternately tighten the connecting rod cap
assembly bolts to the tightening torque indicated and work
in several steps.
Recommended tightening torque: 29 N.m (300 kgf.cm)
All connecting rod cap bolts that do not comply with torque
specifications must be replaced.
c. Identify the front of the connecting rod cap bolt with paint.
d. Retighten the connecting rod cap bolts 90° working in the
numbered order indicated opposite.
e. Check that the paint mark is now oriented 90° forward.
f.
Verify that the crankshaft rotates normally.
g. Measure the connecting rod thrust clearance.