Fluid Management 22CW Blendorama - Manual (Page 21)

FAST & FLUID MANAGEMENT
PAGE NO. 21 of 27
CW - V1.2 – 10- 05- 2012 (36609) – rev, B
VI GENERAL MAINTENANCE
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VII GENERAL MAINTENANCE
A - Replacement of Piston Seals
Models 22 CW
Step 1 Replacement of the inner piston
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A
(1) Loosen both grubscrews in the cylinder of the
end cap (use Allen key provided) 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 colourant from both plunger
assemblies. (2) Using two pairs of pliers, grip the inner end of
the piston (A) with one and the piston shaft with
the other. Unscrew the piston (using a little heat if
difficult) and discard.
(3) 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.
Step 2 Replacement of the outer piston
B
PLEASE NOTE
THE EXTRA
WASHER USED IN
PLUNGERS
PRODUCED
AFTER SEPT 2004
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A
(1) Using two spanners,
carefully undo the lower piston
nut. Discard the piston but
retain the nut. (2) 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. (3) Holding the end cap (A) in
one hand, pull the outer pump
handle (B) until the piston is
fully withdrawn inside the end
cap.