Measuring The Middle Gear Backlash; Adjusting The Middle Gear Backlash - Yamaha Vmax VMX17C 2009 Service Manual

2
L LLL L LLL L L LLL L L LLL L
2. Check:
• Universal joint operation
Rough operation → Replace the universal
joint or bearing.
TIP
Lift the universal joint "1" and make sure that it
falls freely when released.
EAS25880
MEASURING THE MIDDLE GEAR
BACKLASH
1. Remove:
• Universal joint (middle gear side)
• Middle gear side cover
2. Measure:
• Middle gear backlash
Out of specification → Refer to "ADJUSTING
THE MIDDLE GEAR BACKLASH" on page
5-113.
Middle gear backlash
0.05–0.10 mm (0.002–0.004 in)
M MMM M MMM M M MMM M M MMM M
a. Hold the middle drive pinion gear "1" with the
middle gear backlash tool "2".
TIP
Finger tighten the middle gear backlash tool
bolts.
Middle gear backlash tool
90890-04080
L LLL L L LLL L LLL
1
M MMM M M MMM M MMM
5-113
b. Make sure the dial gauge plunger contacts
the measuring point on the centerline of the
yoke bearing hole as shown.
1
2
c. While gently turning the universal joint yoke
back and forth, measure the middle gear
backlash.
TIP
Measure the middle gear backlash at four posi-
tions. Rotate the universal joint yoke 90° each
time and observe the reading on the dial gauge.
L LLL L LLL L L LLL L L LLL L
EAS25900

ADJUSTING THE MIDDLE GEAR BACKLASH

1. Loosen:
• Middle driven pinion gear bearing housing
bolts
2. Remove:
• Middle driven pinion gear shim(s)
3. Tighten:
• Middle driven pinion gear bearing housing
bolts
Middle driven pinion gear bearing
housing bolt
30 Nm (3.0 m·kgf, 22 ft·lbf)
ECA2S31049
NOTICE
Do not overtighten the middle driven pinion
gear bearing housing bolts or you may ob-
tain too little middle gear backlash and dam-
age the middle gears. If the bolts are
overtightened, loosen them until the crank-
case-to-middle-driven-pinion gear-bearing-
housing clearance is within specification, as
stated below. Then, repeat all of the previous
steps.
MIDDLE GEAR
L LLL L L LLL L LLL