Derbi GP1 125-250 c.c. Workshop Manual page 212

Gp1 125-250 c.c.
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The pump can be services using the special tool and a press.
The special tool is designed to be used with the presses most
commonly found in workshops. For those presses equipped
with a 35-mm piston and protective cap with fixing screw, it
is sufficient to remove the cap and install the components of
the special tool in its place. The special tool can be prepared
in advance depending on its use on presses equipped with
piston with a threaded type of coaxial coupling tang or cylin-
drical with stop groove. Then prepare the threaded ring with
the adapter suitable for the coupling of the press used.
- Position the flywheel cover in the hydraulic press by inser-
ting the impeller in the ring that is part of the special tool, as
shown in the photo
N.B.
POSITION THE BASE WITH THE SURFACE PROVIDED WITH
BETTER FINISH TURNED TOWARDS THE FLYWHEEL COVER.
FAILURE TO COMPLY WITH THIS INSTRUCTION MAY RE-
SULT IN DETERIORATION OF THE SURFACE INTENDED FOR
THE COOLANT'S SEAL.
Specific tooling
020628Y Water pump overhaul kit - quasar 250
Install the pin that is part of the special tool on the press
piston.
Turn the flywheel cover until it permits insertion of the pin
inside the joint and eject the pump shaft from the joint and
bearings.
Specific tooling
020628Y Water pump overhaul kit - quasar 250
211

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Gp1 125 c.c.Gp1 250 c.c.

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