36
6.6
Disconnect the cords (26) from the adjusters (27) noting the way in which the cords are secured
in the adjusters.
6.7
remove two screws (18) securing each of the four top track clamps (19) and
remove the clamps.
6.8
Withdraw the bottom tube, complete with the centre tube and the top tube, from the flange end of
the fixed tube. Secure the free ends of the tracks to the bottom tube.
6.9
remove four screws (17) which secure the centre tube cover plate (16) and
remove the plate.
remove the screws (32) which have been used to secure the first stage ram
plate (31) to the bottom tube (33).
6.11 Remove joining links (37) to disconnect the chains (38) from the adjusters (28) in the ram plate.
Withdraw the cords which pass through the plate.
remove two screws (25) which secure each of the bottom pulley shafts (26)
to the bottom tube and remove the pulley assemblies. Draw the ends of the cords back into the bore of
the bottom tube.
6.13 Withdraw the centre tube, complete with the top tube, from the lower end of the bottom tube.
Secure the free ends of the tracks to the centre tube.
remove four screws (32) which secure the second stage ram plate (34) to the
centre tube (35).
remove two screws (2) securing each of the four top track clamps (3) and
remove the clamps.
6.16 Withdraw the top tube from the lower end of the centre tube, allowing the chains to run over the
sprockets inside the centre tube. Secure the free ends of the tracks to the top tube.
Ram
7
To remove the ram assembly without removing the column:
7.1
Remove any load from the head mounting platform.
7.2
Connect nitrogen charging equipment to the charging point and completely depressurize the
pedestal.
NOTE:
Cords which have been disconnected from the adjusters must be replaced with new cords
on reassembly.
NOTE:
Access to all parts of the column at this point is possible. The replacement procedure for
piece parts is self-evident.
NOTE:
The ram assembly consists of a first stage piston inside a first stage cylinder which is, in
turn, inside a second stage cylinder.
Содержание 3702
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