REPAIR
27080 Issue 1 Sept 98 8--7
(4) Tracethewirestotheircableglandsinthebulkheadseal. Carefully
push the cable glands out of the bulkhead seal in the direction of
the drop generator.
(5) Remove the unions on each side of the drop generator.
(6) At the rear of the print head, unscrew the two screws securing the
dropgenerator. These screwsarecaptiveand will remain in place.
When the drop generator is free, remove it from the print head.
(7) Onthedropgenerator,removethefour screwssecuringthenozzle
plate. Pull the nozzle plate off its locating pins and remove to a
clean, safe place.
(8) Cut off the connector on the drive rod wire. Pull the wire back
through the cable gland (which it shares with other wires) to the
drive rod.
CAUTION The following steps should be carried out using a
drive rod spanner and a gunbody spanner (see pg.
9--2).
(9) Carefully pull off the drive rod cap and, using drive rod and
gunbody spanners, remove the drive rod nut from the gunbody
and pull out the drive rod. Retrieve the cap and clamp nut for
future use.
(10)Fitthedriverodclampnut andcapoverthedriverodwire. Fitthe
drive rod into the replacement drop generator and tighten the
clamp nut firmly but not excessively, to ensure metal--to--metal
contact between the drive rod flange and the gunbody. Refit the
drive rod cap.
(11) Pass the drive rod wire through the cable gland and fit a new
connector.
(12)Fit the drop generator into the print head (but do not secure with
thefixingscrews)andpassthe wiresupthroughthebulkheadseal
intotheupperpartofthehead. Carefullypushthecable glandson
the wiring into the bulkhead seal.
(13)Clean and refitthe unions to the drop generator, ensuring that the
’O’ rings are fitted correctly.
(14)Fit the drop generator into position and secure with the fixing
screws.
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