Honda NC700XA Service Manual page 512

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MAINSHAFT BEARING
Turn the inner race of the left mainshaft bearing [1] with
your finger.
The bearing should turn smoothly and quietly.
Also check that the outer race of the bearing fits tightly
in the upper crankcase.
Replace the bearing (page 14-21) if the inner race does
not turn smoothly, quietly, or if the outer race fits loosely
in the crankcase.
COUNTERSHAFT BEARING
Turn the outer race of countershaft bearing [1] with your
finger.
The bearing should turn smoothly and quietly.
Also check that the bearing inner race fits tightly on the
countershaft.
Replace the countershaft, collar, and bearing as an
assembly, if the outer race does not turn smoothly,
quietly, or if the inner race fits loosely on the
countershaft.
LEFT MAINSHAFT BEARING
REPLACEMENT
Remove the following:
– Crankshaft (page 15-5)
– Pistons/connecting rods (page 15-14)
To avoid burns, wear heavy gloves when handling the
heated upper crankcase.
Heat the upper crankcase to 80°C (176°F) evenly using
Do not use a torch
a heat gun.
to heat the upper
crankcase; it may
Tap the upper crankcase lightly and remove the left
cause warping.
mainshaft bearing [1].
Apply engine oil to a new left mainshaft bearing [1].
Drive the left mainshaft bearing into the upper
Drive in a new
crankcase until it is fully seated using the special tools.
bearing squarely
with the marking
TOOLS:
side facing toward
Driver, 15 x 280L [2]
the inside of the
Attachment, 42 x 47 mm [3]
crankcase.
Pilot, 20 mm [4]
Install the following:
– Pistons/connecting rods (page 15-20)
– Crankshaft (page 15-6)
CRANKCASE/TRANSMISSION/BALANCER
07949-3710001
07746-0010300
[3]/[4]
07746-0040500
[1]
[1]
[1]
[1]
[2]
14-21