Fluid Management 53PD Blendorama User Manual - Manual (Page 34)

32 | Blendorama Dispenser
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1
Replacement of the inner piston
a. Loosen both grubscrews in the cylinder of the
end cap (use Allen key) and remove the plunger
assembly from the cylinder. Remove the gauges
from the plunger assembly, then withdraw the
inner plunger assembly from the hollow outer
plunger shaft. Clean all colorant from both
plunger assemblies.
b. Using two pairs of pliers, grip the inner end of
the piston with one and the piston shaft with the
other. Unscrew the piston (using a little heat if
difficult) and discard.
c. Apply Loctite 262 to the internal thread of
the piston shaft, then screw the new piston
assembly in fully. Slide sleeve up onto the shaft,
tighten the piston with pliers and replace the
sleeve over the piston.
2
Replacement of Outer Piston
a. Using two wrenches, carefully undo the lower
piston nut. Discard the piston, but retain the nut.
b. Remove the new piston from retainer and fit
to the shaft curved end face up (see picture).
Replace the front nut using a small drop of
Loctite 262 on thread. Tighten the nut only until
the piston can no longer be rotated by hand.
General Maintenance
Piston seals replacement - Model 25 PD