1D-64 Engine Mechanical:
Crankshaft Journal Bearing Inspection and
Selection
B649G11406062
Refer to “Engine Bottom Side Disassembly: ”.
Refer to “Engine Bottom Side Assembly: ”.
Inspection
1) Inspect each upper and lower crankcase bearing for
any damage.
2) Install the plastigauge onto each crankshaft journal
as shown.
Special tool
(A): 09900–22301 (Plastigauge (0.025 -
0.076 mm))
NOTE
Do not place the plastigauge on the oil hole.
3) Mate the lower crankcase with the upper crankcase
and tighten the crankcase bolts (crankshaft
tightening bolts) to the specified torque and in the
proper tightening sequence.
NOTE
Do not rotate the crankshaft when a piece of
plastigauge is installed.
Tightening torque
Crankcase bolt (M8) (Initial): 13 N·m (1.3 kgf-m,
9.5 lb-ft)
Crankcase bolt (M8) (Final): 22 N·m (2.2 kgf-m,
16.0 lb-ft)
4) Remove the lower crankcase and measure the width
of compressed plastigauge using the envelope
scale. This measurement should be taken at the
widest part of the compressed plastigauge. If the oil
clearance exceeds the service limit, select the
specified bearings from the bearing selection table.
Crankshaft journal oil clearance
Standard: 0.020 – 0.044 mm (0.0008 – 0.0017 in)
Crankshaft journal oil clearance
Service limit: 0.080 mm (0.0031 in)
Selection
1) Check the corresponding crankcase journal I.D.
codes ([A] or [B]) “A”, which are stamped on the rear
of the upper crankcase.
Crankcase journal I.D. specification
I649G1140286-01
(A)
(A)
(A)
I649G1140337-01
Code “A” I.D. specification
A
39.000 – 39.008 mm
(1.5354 – 1.5357 in)
B
39.008 – 39.016 mm
(1.5357 – 1.5361 in)
“10”
“9”
“5”
“1” “3”
“7”
“8”
“12”
“11”
“4”“2”
“6”
I649G1140288-02
(A)
I649G1140338-01
“A”
I649G1140290-01
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