Yamaha RX10K, Supplementary Service Manual

Page: 319 / 523

5-52
CRANKCASE
ENG
NOTE:
NOTE:
S
Install the crankshaft journal lower bearings 1
into the lower crankcase and assemble the
crankcase halves.
S
Align the projections
a
of the crankshaft jour-
nal lower bearings with the notches b in the
crankcase.
S
Do not move the crankshaft until the clearance
measurement has been completed.
S
Tighten the bolts to specification in the tighten-
ing sequence cast on the crankcase.
Crankcase bolt:
Bolt 1
X
10
1st: 15 Nm
(1.5 m
S
kg, 11 ft
S
lb)
2nd: 15 Nm
(1.5 m
S
kg, 11 ft
S
lb) +
45
X
50
_
Bolt 11
X
26
12Nm (1.2 m
S
kg, 8.7 ft
S
lb)
M9 105 mm bolts: 1
X
10
M8 65 mm bolts:
16
,
20
M5 90 mm bolts: 26
M5 80 mm bolts:
25
M5 55 mm bolts: 11
X
15
M5 45 mm bolts:
17
,
19
,
21
X
24
M5 25 mm bolts:
18
Lubricate the crankcase bolt threads with en-
gine oil.
S
Remove the lower crankcase and the crank-
shaft journal lower bearings.
S
Measure the compressed Plastigauge

width
c
on each crankshaft journal.
If the clearance is out of specification, select
replacement crankshaft journal bearings.