NoThreadset™ - Amazon Web Services

NoThreadset™ - Amazon Web Services
Congratulations! You have just purchased what many people regard as the
finest headset in the world. Since 1976
Chris King has been supplying cyclists
with the best made, most reliable headsets you can buy. With proper installation
and maintenance you can expect to
enjoy the many years of the legendary
quality and performance built into each
and every component we make.
Headset installation requires specialized tools.
We recommend the procedure be performed
by a professional bicycle mechanic.
To ensure proper installation, the use
of headset cup press adapter kits are
recommended. Our press adapters help
to correctly align the bearing cups with
the head tube and prevent damage to
the bearings by directing pressure only
and evenly over the bearing cups. The
baseplate installation adapter prevents
damage to the baseplate by protecting
the conical bearing contact surface
from the crown race setting tool. Sizes
are available to fit all popular headset
pressing and setting tools.
Reaming and Facing of Head
Proper preparation of the head tube is
essential for best headset performance.
Every head tube must be reamed and
faced, even if the frame is new and appears to be prepared at the factory.
1.Ream the head tube to ensure that
the head tube bore is the proper
diameter, depth and roundness. Be
sure that the head tube bore (inner
diameter) is correct (see table below)
to ensure proper press fit. Minimum
ream depth is 10.0 mm into all head
tubes except 1.5, which requires a
20.0 mm ream depth.
2.Face the head tube to ensure that the
ends are square and parallel to each
other, and that all paint and anodization
material is removed from the frameheadset interface.
3.Using a small file or sand paper,
carefully remove any sharp edges or
burrs and slightly round, or chamfer,
the inside edges of the head tube
at the top and bottom to prevent
scraping any metal from the cups
during installation.
4.Clean to remove any chips, shavings,
and/or cutting oil.
5.The proper press fit should be with
no more than .1 mm (.004”) of
interference. See table below for head
tube bore specifications. Do not file or
otherwise remove material from the
cups to make them fit.
Head tube
bore (ID)
seat OD
30.1 mm
26.5 mm
1” BMX
32.7 mm
26.5 mm
33.9 mm
30.1 mm
36.9 mm
33.1 mm
49.6 mm
39.8 mm
Installation of Bearing Cups
1.Be sure that surfaces of headset cup
press adaptors are clean and free
of burrs to minimize risk of marring
headset cup finish during installation.
2.Press in both bearing cups using a
headset cup installation press fitted
with Chris King headset cup press
adapters. Check to assure the cups
are seated flatly against the ends of
the head tube.
Preparation of Fork and
Installation of Baseplate
Proper preparation of the fork is essential
for best headset performance.
1.Ream and face the crown race seat
to ensure that the crown race seat
face is square with the steerer tube.
See table above for crown seat outer
diameter (OD) specifications. The
proper base plate press fit should be
with no more than .1 mm (.004”) of
2.Clean to remove any chips, shavings,
and/or cutting oil.
3.Slide the baseplate, conical side
up, onto the steerer tube. Use a
crown race setting tool to set the
baseplate with the beveled side of the
baseplate installation adapter against
the baseplate.
Cutting of Steerer Tube
Use extreme caution when cutting
steerer tube to avoid injury.
1.Insert fork, with baseplate installed,
into frame.
2.Slide GripLock cap assembly, then
spacers (if needed), and then the stem
over steerer tube. Scribe a line flush
with top of stem.
3.Remove items from steerer tube
and mark another line 3 mm below
the first. Cut on the lower line using a
hacksaw and saw guide.
4.Remove all sharp edges from inside
and outside of steerer tube. With a file
or sandpaper, round outside edge of
tube to avoid shearing GripLock cap
O-ring upon installation.
Installation of Star Nut
1.Thread star nut onto installation tool. (If
installation tool is not available, thread
bolt well into star nut and use it to drive
the star nut 15 mm below the top of
the steerer tube).
2.With a soft hammer or mallet, drive
star nut straight into steerer tube
until tool contacts top of steerer tube.
Unscrew tool from star nut.
Note: A star nut is not included with
headsets that require a straight 1.5
steerer tube. We recommend using a
Chris King PreLoader to provide a secure
bearing preload interface when using a
straight 1.5 steerer tube.
stem cap screw
stem cap
star nut
scuff washer
GripLock assembly
GripLock cap
cap O-ring
split ring
bearing ring
bearing ring O-ring
upper bearing cup assy.
lower bearing cup assy.
GripLock™ Assembly
The GripLock is shipped pre-assembled.
If it has been disassembled, fit assembly
together as shown in diagram. Follow the
procedure below.
1.Place thin bearing ring O-ring into outer
groove of bearing ring.
2.Place split ring into bearing ring.
3.Snap the bearing ring and split ring
into the GripLock cap.
4.Feed cap O-ring into the groove
created by the assembled parts.
GripLock™ Installation, Final
Assembly and Adjustment
1.Remove all sharp edges from inside
and outside edges of the cut steerer
tube with a file or sand paper to
avoid shearing the cap O-ring during
2.Apply thin layer of grease onto cap
3.Insert fork into frame.
4.Place assembled GripLock onto
steerer tube. In most cases, the
assembly will easily slide onto steerer.
If cap O-ring hangs up on the top
edge of the steerer tube, take care not
to shear the O-ring. Gently push the
cap O-ring to the side and push the
GripLock assembly onto the steerer
using steady downward pressure and
a slight twisting or rocking motion.
5.Note: If GripLock assembly comes
apart during installation, go back to
“GripLock Assembly” section and then
repeat the installation steps.
6.Slide scuff washer, then any spacers
and stem onto steerer tube. Thread
stem cap screw through stem cap
and into star nut. Tighten to 15 in.lbs.
(1.7 Nm) of torque using 5 mm
hex wrench.
7.A d j u s t a l i g n m e n t o f s t e m a n d
then secure stem according to the
manufacturer’s specifications.
8.Check headset for proper adjustment.
When properly adjusted, the fork
will rotate smoothly without play
or restriction. Some settling may
occur after a few rides; readjust as
New seals will produce some resistance
in rotation for the first 50-100 hours
of use. Avoid confusing this with rubbing or binding that may result from
improper installation or stems that are
not properly faced.
Chris King headsets are designed to
provide the maximum life of any headset with a minimum of maintenance.
Besides an occasional adjustment, the
only service necessary is an occasional
cleaning and regreasing of the bearings.
Riding conditions will dictate how often to
service your headset. In wet conditions,
service may be necessary as often as
every 6 months; in dry conditions, up to
every 5 years.
Service of Bearings
Do not at any time attempt to remove
headset bearings from bearing cups.
Chris King sealed bearings have removable snap rings that hold the rubber
seals in place.
1.Carefully, using a small screwdriver,
pick, or penknife, remove the snap
ring by inserting tool into split of snap
ring. Gently work pointed end of the
snap ring toward bearing center until
it is out of its groove. Follow the ring
around with the tool until the snap ring
is completely dislodged.
2.Lift and remove exposed black rubber
seal to access the interior of the
3.Thoroughly flush the bearing with a
light spray lubricant (e.g., WD-40™)
and blow dry.
4.Wipe dirt and other contaminants
from the seals and snap rings.
Used snap rings and seals can be
reinstalled unless warped, punctured,
or otherwise damaged. If damaged,
replacement seals and snap rings are
available from any authorized Chris
King dealer or directly from Chris King
Precision Components.
Some solvents, synthetic lubricants, and
greases with high-pressure additives
may attack and damage seals and
other nonmetallic materials. Minimize
exposure to these substances and
thoroughly dry bearing assembly after
5.Lay a bead of waterproof grease
a ro u n d t h e t o p o f t h e b e a r i n g .
Rotate the inner race to work grease
throughout the ball area.
6.Reinstall rubber seal between inner
and outer bearing race.
7.Insert one edge of snap ring into
groove of outer bearing race. Press
along entire groove until snap ring
is fully seated; a small gap should
be visible between both ends of the
snap ring.
8.Turn inner race of bearing by hand to
test for binding. If bearings do not run
smooth, repeat steps 1-8. Binding is
often a result of improperly seated
seals and/or snap rings.
Used snap rings and seals can be
reinstalled unless warped, punctured,
or otherwise damaged. If damaged,
replacement seals and snap rings are
available from any authorized Chris King
dealers or directly from Chris King Precision Components.
GripLock™ Removal
1.Remove stem cap, stem and spacers
from steerer tube. Release GripLock
“lock” by tapping side of steerer tube
with palm of hand or rubber mallet. Do
not hit steerer tube from top, as this
may damage the headset bearings.
Headset Removal
1.Remove cups from head tube with a
standard cup removal tool, taking care
that tool contacts the inside edges of
the cup skirt, not the bearing.
2.To remove baseplate from fork, we
recommend using a crown race
removal tool to lessen the possibility
of warping or deforming the baseplate.
If necessary, a 1/4” or 3/8” drift punch
can be used instead. Be sure to
alternate strikes on either side of
fork crown to lessen the possibility of
warping or bending.
3.After removing the baseplate from the
fork, check for deformities by placing
it on a level surface. If the baseplate
does not sit level on the surface and
in any way appears to be warped or
deformed, it must be replaced for
optimal bearing performance.
Baseplates and other headset parts
are available from any authorized Chris
King dealer or directly from Chris King
Precision Components by calling our
Customer Service number.
Chris King Precision Components warrants
its bicycle headsets to be free from defects
in materials or workmanship for a period of
10 years from the original date of purchase.
Any Chris King product that is found by Chris
King Precision Components to be defective
in materials or workmanship will be repaired
or replaced at the sole discretion of Chris
King Precision Components providing it is
returned to the factory freight prepaid. This
warranty does not cover damage or failure
resulting from misuse, abuse, alteration,
neglect, normal and reasonable wear and
tear, crash or impact, failure to perform
routine maintenance as instructed, or
use other than that for which the product
was intended.
If a defect is found, our entire liability and
your sole remedy shall be, at our option, free
repair or replacement of the Chris King product. Chris King Precision Components shall
not be held liable for any indirect, special,
or consequential damages. The warranty
does not cover any Chris King Precision
Components product where the serial
number has been altered or removed. This
written express warranty is in lieu of all other
warranties, implied or expressed, and does
not cover any representation or warranty
made by dealers beyond the provisions
of this warranty. This warranty gives you
specific legal rights, and you may also have
other rights which vary state to state.
Thank you for your purchase!
Made in the USA
All Chris King Precision Components
products are manufactured in the USA
using industry leading environmental
and quality control standards.
Printed with soy ink. Contains 100%
post-consumer recycled paper fiber.
Chris King Precision Components
2801 NW Nela Street
Portland, Oregon 97210
[email protected]
Rev. 2/11-A
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