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13.9 Stand pedestal upright and mount on blocks positioned immediately inboard of the wheels.
13.10 Connect nitrogen supply to the charging point on the pedestal. A recommended charging kit for
this pedestal is the charging valve assembly, Vinten Part No. 3702-32. Note that this piece of equipment
is NOT a pressure reducing valve.
13.11 Apply nitrogen pressure slowly and use only sufficient to cause the column to extend to its full
extent. Do not exceed 50psi (3.45bar). Maintain tension in cords as column extends.
13.12 When column is fully extended pull cords taut, secure ends of cords as noted in Para 5.9 and
secure using clamp (19) and screw (17).
13.13 Adjust bearings in column (Section 4).
13.14 Exercise the column by raising and lowering to full extent at least twice, ensuring that smooth
action is available over the complete range.
13.15 Referring to Fig 6.6, tighten screws in manifold commencing with the three screws holding the
ram to the manifold (7), followed by the eight screws holding the manifold to the tank (10).
13.16 Exercise the column by raising and lowering to full extent at least twice, ensuring that smooth
action is available over the complete range.
13.17 Repeat Para 13.14. If sticking is noted slacken off then retighten screws in manifold. Repeat until
smooth action is available over the complete range.
13.18 Remove pedestal from blocks.
13.19 Charge pedestal to working pressure (Section 2).
13.20 Carry out leak check (Section 4).
Steering assembly
14 To install the steering assembly (Fig 6.9):
14.1 Position steering box so as to allow shaft (20) to be inserted into bearing on base.
14.2 Install retained shims (45, 46) and gear bracket (21) and secure to fixed tube with four screws
(44).
14.3 Install bracket cover (13) and secure with four screws (10).
14.4 Extend upper drive shaft (3) and install washer (2). Insert shaft in coupling (1), ensuring that the
reference marks are aligned and secure with new spring pin (61).
14.5 Referring to Fig 6.4, secure tube bracket (34) to bottom tube with two screws (23). Secure cover
plate (15) to column with six screws (16).
WARNING!: This pedestal must be charged only with clean dry air or nitrogen. A
pressure reducing valve must be fitted to the pressure line between the nitrogen
cylinder and the outlet connection of the hose. The reducing valve must be screwed
into the nitrogen cylinder outlet. The maximum pressure on the outlet side of the
reducing valve when charging this pedestal must not exceed 280psi (19.31bar)
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