G424 Service Manual Base Engine Service Procedure161
G Connecting rod cap nut installation
(1) Since the connecting rod bolts and nuts are torque using
a plastic area tightening method, they should be
examined BEFORE reuse. If the bolt threads are
“necked down”, the bolts should be replaced.
Necking can be checked by running a nut with fingers to
the full length of the bolt’s thread. If the nut does not run
down smoothly, the bolt should replaced.
(2) Before installing the nuts, the threads should be oiled
with engine oil.
(3) Install both nuts on the bolts finger tight, then alternately
torque each nut to assemble the cap properly.
(4) Tighten the nuts to 2.0 kg•m (14.5 lb•ft) [20 N•m] and
plus 1/4 (90°) turn.
Caution:
1) If the nut is turned less than 90°, proper fastening
performance may not be expected. When tightening the
nut, therefore, be careful to give a sufficient turn to it.
2) If the nut is over tightened (exceeding 100°), loosen the
nut completely and then retighten it by repeating the
tightening procedure from step (1).
To Next Page
Loading...
Need help?
General
