Mitsubishi 4G9 User Manual

E

"

A

(1) Mate the correct bearing cap with the correct connecting

rod by checking with the alignment marks marked during
disassembly. If a new connecting rod has no alignment
mark, position the notches for locking the bearing on
the same side.

(2) Check if the thrust clearance in the connecting rod big

end is correct.

"

A

(1) Since the connecting rod cap bolts and nuts are torqued

using the plastic area tightening method, the bolts should
be examined BEFORE reuse. If the bolt threads are
“necked down”, the bolt should be replaced.
Necking can be checked by running a nut with fingers
to the full length of the bolt threads. If the nut does not
run down smoothly, the bolt should be replaced.

(2) Before installation of each nut, apply engine oil to the

thread portion and bearing surface of the nut.

(3) Install each nut to the bolt and tighten it with fingers.

Then tighten the nuts alternately to install the cap properly.

(4) Tighten the nuts to a torque of 20 Nm.
(5) Make a paint mark on the head of each nut.
(6) Make a paint mark on the bolt end at the position 90

_

to 100

_

 from the paint mark made on the nut in the direction

of tightening the nut.

(7) Give a 90

_

 to 100

_

 turn to the nut and make sure that

the paint mark on the nut and that on the bolt are in
alignment.

_

_

Cylinder No.

Notches

E

Paint
mark

Paint mark

Nut

Bolt

90

_

 – 100

_