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Application Note
Brake Piston Readjusting Set
with thrust bearing
General Information and Safety
Precautions
The Brake Piston Readjusting Set is
suitable for all common vehicle types.
It may be used for the readjustment
(pushing or turning) of brake pistons on
floating calliper systems with or without
locking device for hand brakes.
Operating Instructions for Calliper
Systems with locking device for hand brakes
• Please make sure that there is enough space in the
fluid reservoir for the admission of the brake fluid
flowing back into the fluid reservoir when pushing or
turning back the brake piston.
• Loosen the brake calliper and swivel it to the side.
• Remove the brake pads.
• Please make sure that there is enough space in the
fluid reservoir for the admission of the brake fluid
flowing back into the fluid reservoir when pushing or
turning back the brake piston.
• Loosen the brake calliper and swivel it to the side.
• Remove the brake pads.
• Insert the basic appliance with the suitable adapter
into the brake calliper and lock it in the brake piston.
• Use a combination wrench (HAZET-No. 600 N-13)
in order to turn the adapter to the right or left until
the piston is in its original position. At the same time,
turn the spindle in order to prevent the adapter from
slipping out of the piston guide (fig. 2).
• Turn back the spindle and remove the brake piston
readjusting tool.
• It is absolutely necessary to consider the regulations
of the manufacturer.
Operating Instructions for Calliper Systems without
locking device for hand brakes
• Fix the suitable adapter to the basic appliance and insert
the tool into the brake calliper.
• Turn the spindle in order to push back the piston into its
original position. The built-in thrust bearing prevents the
piston from turning and thus the damage of the piston
sealing elements, reducing the expenditure of energy.
• Remove the tool, install the brake calliper with the brake
pads and check the brake fluid level as well as the brak-
ing effect.
Brake pistons on calliper systems with locking device for hand brakes must not be
pushed back but turned back. Brake pistons on calliper systems without locking
device for hand brakes must not be turned back but pushed back.
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Figure 1
Figure 2
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