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14.10 Stand column assembly on face of tank tube top plate.
fit spacer (18), new 'O' ring (21), washer (23) and filter (22).
14.12 Install retaining plate (20) and secure with four screws (19).
14.13 Slacken bottom clamp and lift outer tube about 50mm (2in.). Retighten bottom clamp.
14.14 Fit one snap ring (17) to inner groove of outer tube (11). Degrease inner face of snap ring after
installation.
14.15 Cut 'O' ring (19) to fit in bore of outer tube and degrease.
14.16 Use Loctite 409 to adhere 'O' ring (19) to inner face of snap ring (17).
14.17 Install outer tube lower cover (18) and retain with second snap ring (17).
14.18 Assemble column to skid (
) and apply skid brakes.
degrease grub screws (10) and threaded holes in roller housings (7).
14.20 Fit grub screws to roller housings (7).
14.21 Ensure that top tube clamp lever is released and release safety catch.
14.22 Adjust grub screws (10) in four roller housings (7) adjacent to bottom clamp knob to centralize
tank assembly in elevation tube.
14.23 Adjust grub screws (10) in two roller housings (7) opposite to clamp knob to take up all radial play
between tank tube and rollers. When correctly adjusted the tank tube can be moved freely over the
whole length of travel in the elevation tube without rotational or side play. Secure each grub screw with
Loctite 222E.
14.24 Refit roller housing covers (24).
14.25 Adjust top tube clamp lever (
14.26 Carry out leak test (
Outer tube
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To assemble the outer tube (
15.1 Install a spring (26) on the left-hand boss in each top housing cover (25) so that the bent end of
the spring points inwards. Clip each cover into position on the top housing, ensuring that the straight
end of the spring engages with the lug in the cover and the bent end of the spring rests in the notch in
the housing.
15.2 Degrease six grub screws (24), apply Loctite 222E and install in top housing to form pivots for
two leg ties (10) and leg tie (with strap) (20). Install leg ties with open side of foot moulding facing
downwards. Ensure leg tie (with strap) (20) is in the position noted during disassembly. Tighten each
pair of grub screws (24) until the leg tie will hold its own weight when extended horizontally from the
outer tube.
15.3 Slide skid clamp (13) onto the outer tube (11) to the position marked during disassembly. Ensure
that skid clamp is correctly positioned to allow engagement of leg ties and tighten retaining screw (15).