Repair manual

To obtain the required assembly clearances, th e main bearing and big end bearing sh ells have to be selected as described
hereunder.
This operation makes it possible t o identify th e most suited bearing shells for each of the journals of the shaft (the bearing shells
may even have different classes for different pins).
red
red/black
green
green/black
STD
1.965 to 1.975
1.976 to 1.985
+0.127
2.028 to 2.038
2.039 to 2.048
+0.254
2.092 to 2.102
2.103 to 2.112
+0.508
2.219 to 2.229
2.230 to 2.239
Depending on the thickness, the bearing shells are selected
in classes of tolerance marked by a colour (red-green -
red/black - green/black).
Figure 25 gives the specifications of the main bearing and big
end bearing shells available as spare parts in the standard sizes
(STD) and in the permissible oversizes (+0.127, +0.254,
+0.508).
Figure 25
red
red/black
green
green/black
STD
3.110 to 3.120
3.121 to 3.130
+0.127
3.173 to 3.183
3.184 to 3.193
+0.254
3.237 to 3.247
+0.508
3.364 to 3.374
Big end bearing shells
Main bearing shells
Selecting the main bearing and big end bearing shells
18
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F3C CURSOR ENGINES
Base - May 2007 Print P2D32C005 E