
'61HN252' by American Honda Motor Co. - Page 395 of 540
http://services.honda.com/ServiceManual/SVC_MNL/61HN253/61HN2...
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3/9/2008 11:17 PM
[2005-2008] [TRX500 FA/FGA]
REAR DRIVING MECHANISM
Install the case cover and tighten the bolts in several
It is important to
steps until the cover evenly touches the gear case.
10 mm BOLTS
turn the pinion
8 mm BOLTS
Then, while rotating the pinion gear, tighten the
while tightening the
bolts to the specified torque in a crisscross pattern
bolts. If the ring
in several steps.
gear shim is too
thick, the gears will
lock after only light
TORQUE: 10 mm bolt: 49 N·m (5.0 kgf·m, 36 lbf·ft)
tightening.
8 mm bolt: 25 N·m (2.6 kgf·m, 19 lbf·ft)
COVER
Remove the oil filler cap.
NORMAL
Rotate the ring gear several times in both directions
of rotation.
Check the gear tooth contact pattern through the oil
HEEL
filler hole.
The pattern is indicated by the Prussian Blue
TOE
applied to the pinion.
Contact is normal if the Prussian Blue is transferred
FACE
FACE
to the approximate center of each tooth, but slightly
to the heel side and to the flank side.
FLANK
FLANK
If the patterns are not correct, remove and change
DRIVE
COAST
the pinion gear shim with a suitable one.
SIDE
SIDE
Replace the pinion gear shim with a thicker one if
TOO HIGH:
the contact pattern is too high, toward the face.
PINION SHIM
FACE
FACE
COAST SIDE
DRIVE SIDE
Replace the pinion gear shim with a thinner one if
TOO LOW:
the contact pattern is too low, toward the flank.
The pattern will shift about 0.5 1.0 mm (0.02
0.04 in) when the thickness of the shim is changed
by 0.12 mm (0.005 in).
Ring gear shims:
A: (thinnest): 1.64 mm (0.064 in)
D: (standard): 2.00 mm (0.079 in)
PINION SHIM
I: (thickest): 2.18 mm (0.086 in)
For pinion shim replacement, see
page 18-15.
FLANK
FLANK
COAST SIDE
DRIVE SIDE
18-13