TOHATSU BFT75A Service Manual page 428

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CONNECTING ROD BEARING
When replacing the connecting rod bearing, check the
crank pin code letter and the connecting rod code
number, and select the correct bearing by referring to
the bearing selection table.
• 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 stiff brush or screwdriver to
clean.
Check each crank pin code letter [1] in the position
shown and record them.
• The crank pins are the No.1 and the subsequent
number crank pins when viewed from the alternator
rotor side.
• The crank pin code letters are for the No.1 and the
subsequent number journals when viewed from the
right side.
Crank pin O.D.: 40 mm (1.6 in)
Code
letter
D
C
B
A
Check each connecting rod code number [1] in the
position shown and record them.
• The connecting rod code numbers are for the No.1
and the subsequent number journals when viewed
from the alternator rotor side.
Connecting rod big end I.D.: 43 mm (1.7 in)
Code
number
1
2
3
4
Tolerance
–0.024 – –0.018 mm (–0.0009 – –0.0007 in)
–0.018 – –0.012 mm (–0.0007 – –0.0005 in)
–0.012 – –0.006 mm (–0.0005 – –0.0002 in)
–0.006 – ±0.000 mm (–0.0002 – ±0.0000 in)
Tolerance
±0.000 – +0.006 mm (±0.0000 – +0.0002 in)
+0.006 – +0.012 mm (+0.0002 – +0.0005 in)
+0.012 – +0.018 mm (+0.0005 – +0.0007 in)
+0.018 – +0.024 mm (+0.0007 – +0.0009 in)
CYLINDER BLOCK
No.1 No.3
No.2
(No.1 journal and subsequent numbers
viewed from the alternator side)
[1]
No.4
[1]
No.4
No.1
15-27