Park Tool Co.
www.parktool.com
• Accurately aligns and presses 1-inch, 1-1/8
inch, and 1.5-inch headset cups and races.
• Presses bearing cups and cartridge bottom
bracket bearings into one-piece (also called
“Ashtabula”) bottom bracket shells.
• Holds fixed cup wrenches firmly in place when
removing or installing drive side (fixed) cups
from threaded, adjustable-type bottom brackets.
Assembly
Thread and fully tighten handle knobs #526-2
onto handle ends of handle weldment #526.
Pressing headset cups into frame
1. Determine the acceptability of the press fit
between the headset cup and the head tube.
Using a caliper, measure outside diameter
(OD) of pressed portion of headset cup. Next,
measure inside diameter (ID) of frame head
tube. Due to possibility of ID being out of
round, measure in at least two places and
average the dimensions. Subtract inside
diameter from outside diameter to determine
amount of pressing interference. Normal
interference is between 0.1mm - 0.2mm. If
the press fit is more than 0.2mm, damage to
frame and/or tool may occur. In this case, it is
recommended to ream the head tube or find
a headset with a different press interference.
If the difference is between 0.0 - 0.1mm, a
Loctite-type adhesive is recommended. If the
difference is negative, a different headset is
recommended. Check with headset manufac-
turer for interference specifications unique to
their headset.
2. Optional cup guides #530-2 are used to main-
tain cup alignment while pressing. Cup guides
fit most 1-inch and 1-1/8 inch standard head-
set cups. Before using cup guide, insert guide
into cup. If guide appears to jam or is a tight
fit, DO NOT use cup guides for that particular
headset cup. Simply press using threaded
press plate and sliding press plate (to insure
alignment when not using cup guides, press-
ing one cup at a time is recommended). Use
care when pressing aluminum head cups;
pressure on the outer rim of the cups may re-
sult in damage. Note: Do not use cup guides if
guides press on any pre-installed cup-bearing
unit (ex. Chris King
®
headsets).
3. Assemble HHP-2 and headset parts as seen in
Figure 1.
4. Turn handles clockwise slowly and inspect
alignment of cups as they enter head tube.
Press cups until fully seated into head tube.
5. To remove HHP-2, unthread handles and press
lever of sliding press plate.
Pressing bearing cups into one-piece
bottom bracket shells
1. Engage sliding press plate to highest notch
on hex shaft.
2. Assemble parts as seen in Figure 2. (#530-2
Cup Guides are not used in pressing “one-
piece crank” bearing cups).
3. Turn handle clockwise and press cups until
fully seated into bottom bracket shell.
Removing and installing bottom bracket
fixed cups
The HHP-2 can be used to hold bottom bracket
wrenches firmly to drive side (fixed) bottom
bracket cups. This prevents wrench from slip-
ping on cups due to shallow engagement.
Remove spindle from bottom bracket and as-
semble HHP-2, fixed cup, and wrench as seen in
Figure 3.
HHP-2
Bearing Cup Press
Figure 1
Figure 2
Figure 3
