TOHATSU BFT115A Service Manual page 485

CRANKSHAFT MAIN JOURNAL O.D.
Measure the crankshaft main journal O.D.
STANDARD:
No. 1, 2, 4, 5 (1): 54.984 – 55.008 mm
(2.1647 – 2.1657 in)
No. 3 (2): 54.976 – 55.000 mm
(2.1644 – 2.1654 in)
CRANK PIN O.D.
Measure the crank pin (1) O.D.
STANDARD:
47.976 – 48.000 mm (1.8888 – 1.8898 in)
CRANKSHAFT JOURNAL (MAIN/
CRANK PIN JOURNALS)
ROUNDNESS/TAPER
Measure and record the crank pin journal and
crankshaft main journal O.D. in both A and B axis.
Calculate the difference between the measurements to
determine the roundness.
STANDARD:
0.005 mm (0.0002 in) Max
SERVICE LIMIT:
0.010 mm (0.0004 in)
Measure and record the crank pin journal and
crankshaft main journal O.D. in A and B points.
Calculate the difference between the measurements to
determine the taper.
STANDARD:
0.005 mm (0.0002 in) Max
SERVICE LIMIT:
0.010 mm (0.0004 in)
CYLINDER BLOCK
(2)
(1)
(1)
(1)
ROUNDNESS TAPER
(Measure at the (Measure at the both
center of the journal.) ends of the journal.)
A
B
ROUNDNESS:
(1)
A B
TAPER:
15-37