Removing The Middle Driven Shaft; Checking The Middle Drive; Checking The Oil Strainer; Checking The Transfer Gear Oil Pump - Yamaha XV19SX(C) Service Manual

EAS25470

REMOVING THE MIDDLE DRIVEN SHAFT

NOTE:
Loosen the middle drive gear nut before remove
the drive pulley.
1. Install:
• Right rider footrest assembly
Refer to "ENGINE REMOVAL" on page 5-1.
2. Loosen:
• Middle drive gear nut "1"
NOTE:
When loosening the middle drive gear nut, press
down on the brake pedal so the middle drive
gear does not move.
3. Remove:
• Primary chain "1"
• Middle drive gear "2"
• Middle driven shaft "3"
NOTE:
Remove the primary chain, middle drive gear
and middle driven shaft at the same time.
3
EAS25480

CHECKING THE MIDDLE DRIVE

1. Check:
• Middle drive gear
• Middle driven gear
Damage/wear → Replace the middle drive
gear, middle driven shaft and primary chain
as a set.
1
1
2
5-91
TRANSFER GEAR CASE
2. Check:
• Primary chain
Damage/stiffness → Replace the primary
chain, middle drive gear and middle driven
shaft as a set.
EAS25490

CHECKING THE OIL STRAINER

1. Check:
• Oil strainer
Damage → Replace.
Contaminants → Clean with engine oil.
EAS25500
CHECKING THE TRANSFER GEAR OIL
PUMP
1. Check:
• Transfer gear oil pump housing
• Transfer gear oil pump cover
Cracks/damage/wear → Replace the defec-
tive part(s).
2. Measure:
• Inner-rotor-to-outer-rotor-tip clearance "a"
• Outer-rotor-to-oil-pump-housing clearance
"b"
• Oil-pump-housing-to-inner-rotor-and-outer-
rotor clearance "c"
Out of specification → Replace the transfer
gear oil pump.
1. Transfer gear oil pump inner rotor
2. Transfer gear oil pump outer rotor
3. Transfer gear oil pump housing