Yamaha 2002 TDM900, Service Manual

Page: 328 / 475

5-79
CRANKSHAFT
ENG
NOTE:
g. Measure the compressed Plastigauge

width
a
on the crankshaft pin.
If the crankshaft-pin-to-big-end-bearing
clearance is out of specification, select re-
placement big end bearings.
6. Select:
S
big end bearings (P1
X
P2)
S
The numbers
A
stamped into the crankshaft
web and the numbers 1 on the connecting
rods are used to determine the replacement
big end bearing sizes.
S
“P1”
X
“P2” refer to the bearings shown in the
crankshaft illustration.
For example, if the connecting rod “P1” and the
crankshaft web “P1” numbers are “4” and “1” re-
spectively, then the bearing size for “P1” is:
“P1” (connecting rod) – “P1”
(crankshaft) =
4 – 1 = 3 (brown)
BIG END BEARING COLOR CODE
1 blue
2 black
3 brown
4 green
EAS00399
CHECKING THE CRANKCASE
1. Thoroughly wash the crankcase halves in a
mild solvent.
2. Thoroughly clean all the gasket surfaces and
crankcase mating surfaces.
3. Check:
S
crankcase
Cracks / damage
!
Replace.
S
oil delivery passages
Obstruction
!
Blow out with compressed air.
EAS00401
CHECKING THE BEARINGS
1. Check:
S
bearings
Clean and lubricate the bearings, then rotate
the inner race with your finger.
Rough movement
!
Replace.