Gary Fisher Cronos - Manual (Page 7)

7 | GARY FISHER SERVICE INFORMATION
Headset Installation
The headset of the Cronus uses a 1.5” lower bearing and 1 1/8 ” upper bearing (Figure 5).
The bearings are slip-fit into the frame. There are many benefits to this design, and one is
that the Cronus headset is a tool-less installation. The bearings are slip fit, so a headset
press or fork race setting tool are not needed.
special care information
The fork on the Cronus frame has several unique features that require special care to
avoid frame damage:
+ With a carbon steerer, do not use a star-fangled nut; use only the compression nut
assembly supplied with the fork.
+ Do not cut or machine the fork crown or head tube; never use facing tools.
+ Do not use a hammer to install the bearings.
+ Make sure the stem clamp is designed correctly and is free of burrs.
+ If you choose to cut the steerer, follow all normal procedures and cautions
regarding carbon fiber composite parts. If you are not familiar with these
procedures, consult your dealer.
Tools and materials required
+ Top cap assembly
For carbon steerer: Compression nut assembly PN 408118
+ Stem
+ Optional headset spacers, maximum of 40 mm including bearing cover (Figure 18)
+ Bearing cover, conical
Aluminum 5 mm PN 404691 15 mm PN 404689
Carbon 5 mm PN 404690 15 mm PN 404687
+ Shims, 1mm
+ Centering washer
+ Upper bearing, 1 1/8 ”
Steel PN 271111
Stainless steel PN 271112
+ Lower bearing, 1.5” PN 290413
+ Fork
+ Rock “N” Roll Super Coat grease
+ 4 and 5 mm allen wrenches
+ Torque wrench
figure 5. cronus headset parts and spacers
Headset spacers
Bearing cover
shims
centering washer
upper bearing
Lower bearing