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ButterCup Removal - Air Spring Shaft
Clamp the air shaft into the 10 mm slot of the RockShox Reverb Vise Clamp the air shaft into the 10 mm slot of the RockShox Reverb Vise
Blocks or RockShox Rear Shock Vise Blocks with the air piston oriented Blocks or RockShox Rear Shock Vise Blocks with the air piston oriented
downward.downward.
Clamp the air spring shaft only tight enough so it does not spin when Clamp the air spring shaft only tight enough so it does not spin when
the ButterCup shaft end plate is removed.the ButterCup shaft end plate is removed.
NOTICE
Scratches on the air spring shaft can cause air to leak. If a scratch is
visible the air spring assembly may need to be replaced.
Unthread and remove the ButterCup shaft end plate from the air spring Unthread and remove the ButterCup shaft end plate from the air spring
shaft.shaft.
Remove the ButterCup shaft end plate o-ring (large) and discard it.Remove the ButterCup shaft end plate o-ring (large) and discard it.
The small o-ring does not need to be removed or replaced.The small o-ring does not need to be removed or replaced.
Remove the air spring shaft from the vise and vise blocks.Remove the air spring shaft from the vise and vise blocks.
Remove the upper ButterCup housing and bushing assembly from the Remove the upper ButterCup housing and bushing assembly from the
air spring shaft and set it aside.air spring shaft and set it aside.
5
T25 RockShox Vise Blocks 10 mm
6
7