Engines Iveco C10,C13, Cursor 10, Cursor 13. Manual — part 64
Selecting the main bearing shells (Journals with nominal diameter)
After reading off the data, for each of the main journals, on the crankcase and crankshaft, you choose the type of bearing shells
to use according to the following table:
STD.
1
2
3
1
2
3
green
green
red
red
red
red
green
green
green
green
red
red
green
green
green
green
green
green
Figure 27
20
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F3B CURSOR ENGINES
Base - May 2007
green/black
SELECTING THE MAIN BEARING SHELLS (GROUND JOURNALS)
If the journals have been ground, the procedure described so far cannot be applied.
In this case, it is necessary to check that the new diameter of the journals is as shown in the table and to mount the only type
of bearing shell envisaged for the relevant undersizing.
-0.127
1
2
3
99.843
99.852
green/black
green/black
green/black
green/black
green/black
green/black
red/black
red/black
green/black
green/black
green/black
red/black
red/black
red/black
red/black
green/black
green/black
99.853
99.862
99.863
99.873
1
2
3
red/black =
3.173 to 3183 mm
green/black =
3.184 to 3.193 mm
-0.254
1
2
3
99.726
99.746
red
red
red
red
red
red
red =
3.237 to 3.247 mm
-0.508
1
2
3
99.468
99.508
red
red
red
red
red
red
red =
3.364 to 3.374 mm
Figure 28
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
21
F3B CURSOR ENGINES
Figure 29
SELECTING THE BIG END BEARING SHELLS
(JOURNALS WITH NOMINAL DIAMETER)
There are three markings on the body of the connecting rod
in the position indicated as ”A”:
Letter indicating the class of weight:
A
=
4756 to 4795 g.
B
=
4796 to 4835 g.
C
=
4830 to 4875 g.
Number indicating the selection of the diameter of the
big end bearing seat:
1
=
94.000 to 94.010 mm
2
=
94.011 to 94.020 mm
3
=
94.021 to 94.030 mm
Numbers identifying the cap-connecting rod coupling.
1
2
3
The number, indicating the class of diameter of the bearing
shell seat may be 1, 2 o 3.
Determine the type of big end bearing to fit on each journal
by following the indications in the table (Figure 30).
47557
VIEW FROM “A”
STD.
1
2
3
1
2
3
green
green
red
red
red
red
red
red
green
green
green
green
green
green
green
green
green
green
CLASS
Figure 30
22
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F3B CURSOR ENGINES
Base - May 2007
Figure 31
green/black
Selecting big end bearing shells (ground journals)
If the journals have been ground, the procedure described so far cannot be applied.
In this case, it is necessary to check (for each of the undersizings) which field of tolerance includes the new diameter of the
crankpins and to mount the bearing shells identified with the relevant table.
-0.127
1
2
3
89.843
89.852
green/black
green/black
green/black
green/black
green/black
green/black
red/black
red/black
green/black
green/black
green/black
red/black
red/black
red/black
red/black
green/black
green/black
89.853
89.862
89.863
89.873
1
2
3
red/black =
2.028 to 2.038 mm
green/black =
2.039 to 2.048 mm
-0.254
1
2
3
89.726
89.735
red
green
green
red
green
green
red
=
2.092 to 2.102 mm
green =
2.103 to 2.112 mm
-0.508
1
2
3
89.472
89.481
red
green
green
red
green
green
red
red
green
red
red
green
89.482
89.492
red
red
green
red
red
green
red
=
2.219 to 2.229 mm
green =
2.230 to 2.239 mm
89.736
89.746
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
23
F3B CURSOR ENGINES
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст