Honda BF40D Manuel D'utilisation page 198

b. CRANKSHAFT MAIN BEARING
When replacing the main bearing, check the crankshaft main
journal code number and the cylinder block I.D. code letter, and
1
select the correct bearing by referring to the bearing selection
table.
2
• If the code letter and/or number is not clear, clean the area
with a cleaning solvent and check again. Do not scrub with a
3
stiff wire brush or screwdriver to clean.
4
1) Check each crankshaft main journal code number in the
position shown, and record them.
5
Crankshaft main journal O.D.: 40 mm (1.6 in)
6
Code
7
number
4 -0.018 - -0.012 mm (-0.0007 - -0.0005 in)
8
3 -0.012 - -0.006 mm (-0.0005 - -0.0002 in)
2 -0.006 -
9
1 0.000 - +0.006 mm ( 0.0000 - +0.0002 in)
10
11
12
2) Check each cylinder block I.D. code letter in the position
13
shown, and record it.
14
Main bearing I.D.: 44 mm (1.7 in)
Code
15
letter
A 0.000 - +0.006 mm ( 0.0000 - +0.0002 in)
16
B +0.006 - +0.012 mm (+0.0002 - +0.0005 in)
17
C +0.012 - +0.018 mm (+0.0005 - +0.0007 in)
D +0.018 - +0.024 mm (+0.0007 - +0.0009 in)
18
3) Select the correct bearing by referring to the crankshaft
main journal code number and the cylinder block I.D. code
19
letter.
20
10-18
Tolerance
0.000 mm (-0.0002 - 0.0000 in)
Tolerance
[1]
No.1 journal and the subsequent numbers
viewed from the alternator rotor side.
[2] No.4 [3] No.3
[6]
CRANKSHAFT MAIN JOURNAL CODE NUMBER
(No.1 journal and the subsequent numbers
viewed from the left side)
[8]
No.1
MAIN
JOURNAL
[1]
[2]
CYLINDER
CYLINDER BLOCK CODE LETTER
BLOCK
(No.1 journal and the subsequent
letters viewed from the right side)
[6]
No.4 MAIN
JOURNAL
[5]
No.3 MAIN
JOURNAL
[4]
No.2 MAIN
JOURNAL
198
[4] No.2 [5] No.1
[7]
No.4
MAIN
JOURNAL
[3]
No.1 MAIN
JOURNAL