Checking The Crankcase; Checking The Bearings And Oil Seal; Checking The Oil Pipe; Checking The Oil Pump Drive - Yamaha MT-01 T 2005 Service Manual

• Tap on one side of the crankcase with a
soft-face hammer. Tap only on reinforced
portions of the crankcase, not on the crank-
case mating surfaces. Work slowly and
carefully and make sure the crankcase
halves separate evenly.
EAS25580

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:
• Crankcase
Cracks/damage → Replace.
• Oil delivery passages
Obstruction → Blow out with compressed air.
ET5YU1022

CHECKING THE BEARINGS AND OIL SEAL

1. Check:
• Bearings
Clean and lubricate the bearings, then rotate
the inner race with your finger.
Rough movement → Replace.
• Oil seal
Damage/wear → Replace.
EAS25590

CHECKING THE OIL PIPE

1. Check:
• Oil pipe
Damage → Replace.
Obstruction → Wash and blow out with com-
pressed air.
EAS25610

CHECKING THE OIL PUMP DRIVE

1. Check:
• Oil pump drive gear
• Oil pump driven gear
Chips/pitting/roughness/wear → Replace the
defective part(s).
ET5YU1023

INSTALLING THE BEARING RETAINER

1. Install:
• Bearing retainer "1"
NOTE:
• Install the bearing retainer "1" with its "OUT"
mark "a" facing outward.
• Apply locking agent (LOCTITE
of the bearing retainer bolt.
EAS25690

ASSEMBLING THE CRANKCASE

1. Apply:
• Sealant
(onto the crankcase mating surfaces)
Yamaha bond No. 1215
90890-85505
NOTE:
Do not allow any sealant to come into contact
with the oil gallery.
2. Install:
• Dowel pins "1"
• Joint pipe "2"
3. Install:
• Left crankcase
(onto the right crankcase)
NOTE:
• Turn the shift drum segment "1" to the position
shown in the illustration. In this position, the
shift drum segment's teeth will not contact the
crankcase during crankcase installation.
5-78
CRANKCASE
®
) to the threads
a
1