Checking The Crankcase; Checking The Bearings And Oil Seals; Assembling The Crankcase - Yamaha YZF-R1S Service Manual

CRANKCASE
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 AND OIL
SEALS
1. Check:
S bearings
Clean and lubricate the bearings, then rotate
the inner race with your finger.
Rough movement ! Replace.
2. Check:
S oil seals
Damage/wear ! Replace.

ASSEMBLING THE CRANKCASE

1. Lubricate:
S crankshaft journal bearings
(with the recommended lubricant)
Recommended lubricant
Engine oil
2. Apply:
S sealant
Yamaha bond No. 1215
90890-85505, ACC-1109-05-01
NOTE:
Do not allow any sealant to come into contact
with the oil gallery or crankshaft journal bear-
ings. Do not apply sealant to within 2 X 3 mm
(0.08 X 0.12 in) of the crankshaft journal bear-
ings.
5-75
ENG