Installation Kit
contents:
Two aluminum spacers
Two 0.093" shims
Four 0.047" shims
Two 3/8" washers
One 3/16" Allen wrench
One 1/2 ml. tube of Loctite (RC/609)
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Replacement Parts:
Two sealed bearings, type 6903RK (or equivalent)
Two collars (mountain bikes only)
One spindle (optional)
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Tools Needed:
Two 14-mm open-end wrenches
Cleaning solvent (denatured alcohol, acetone)
3/8-inch (approx.) aluminum dowel or drift
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Remove the old spindle, using the drift to drive
it out one side. Some force may be required to
break the bonds of the Locktite between the
spindle and bearings. If the spindle is to be
re-used, be careful not to damage the spindle
threads.
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Remove the bearings with the drift. Tap the
bearings from the shell in a uniform fashion
around the inside face. Some force will be
required to break the Loctite bond.
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Inspect the bottom bracker shell to confirm that
the breather holes in the seat and down tubes are
still sealed. If not, cover them with plastic
tape and seal the tape and surrounding area with
silicone sealant.
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Measure the spindle, end to end, in millimeters.
Select the appropriate shims and spacers for
bearing and spindle installation from the
following table.
Bearing
Installation Table
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Spindle
Length
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Shims
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113 mm
120 mm
122.5 mm
125 mm |
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No shims
One 0.093" per side
One 0.093" and one
0.047" shim per side
One 0.093" and two
0.047" shims per side |
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For 113 mm spindles, the stepped sides of the
spacers should face the bottom bracket shell.
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For all other spindle lengths, the stepped sides
of the spacers should face away from the bottom
bracket shell.
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In accordance with the Loctite application
instructions, clean all tools and parts of grease
and dust. Clean the inner and outer races of the
bearings. Be careful not to get solvent in the
bearings themselves. Also, thoroughly clean the
spindle and theinterior of the bottom bracket
shell.
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Apply a light film of Loctite around the stepped
areas inside the bottom bracket shell on both
sides.
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Apply one drop of Loctite to the spindle,
1/2-inch from the end flats. Smear the drop
evenly around the circumference of the spindle.
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Slide a bearing and the appropriate spacer and
shim(s) (see table above) onto the end of the
spindle with the Loctite. Thread a bolt and
washer into this end of the spindle until it is
tight.
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Apply Loctite to the other end of the spindle in
the same manner.
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Hold the assembly by the bolt and slide the
spindle through the bottom bracket shell until
the bearing abuts the shell.
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Slide the second bearing, spacer, and shim(s)
onto the other end of the spindle. Install the
bolt and washer into the spindle. If the bolt
will not reach the spindle, remove the shimes
from that side to get the bolt started. Once the
bearings are partially seated, stop and
re-install the shims.
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Tighten the second bolt while holding the first.
Check that the bearings remain straight as they
are pressed into the shell. Continue to tighten
the bolt until the spacers are flush with the
shell.
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Remove the bolts, washers, spacers, and shims. If
the second bolt is difficult to remove, hold the
flats of the spindle with a wrench while
unthreading the bolt. Be careful not to move the
spindle out of position.
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Measure the spindle on each side to confirm
proper alignment. If incorrect, use a spacer and
extra shims on hte short side of the spindle.
Hold the long side with a wrench on hte spindle
flats. Tighten the bolt until the spindle
alignment is correct.
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For mountain bikes only: Install both
collars and tighten the set screws.
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Let the bike stand for one hour to allow the
Loctite to cure.
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