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Refit
15 The top cover is refitted by a reversal of the procedure detailed at Para 14, ensuring the left-hand end is
flush with the main casting (61) (Fig 6.3).
Front cover
Remove
16 The front cover (32) is removed as follows (Fig 6.2):
16.1 Remove top cover as detailed in Para 14.
16.2 Unscrew and remove four M4 socket cap head screws (33).
16.3 Remove front cover (32).
Refit
17 The front cover is refitted by a reversal of the procedure detailed at Para 16, ensuring the left-hand end
is flush with the main casting (61) (Fig 6.3).
End plate/adjustment thread assembly
Remove
18 The end plate/adjustment thread assembly (29) is removed as follows (Fig 6.7 and Fig 6.2):
18.1 Position tilt assembly horizontally and engage CENTRE LOCK.
18.2 Rotate BALANCE adjustment knob (186) fully counter-clockwise.
18.3 Unscrew and remove single M6 button head screw (31) below adjustment knob (186).
18.4 Unscrew and remove six M6 button head screws (30), three from each side of adjustment knob
(186).
18.5 Withdraw end plate/adjustment thread assembly (29) from main casting (61) (Fig 6.3).
18.6 Withdraw main spring (28) from within mechanism block assembly (12).
WARNING!: There is risk of serious injury if any attempt is made to remove the end
plate/adjustment thread assembly while the main spring is compressed, i.e. when the
platform is tilted or when adjustment knob is not turned fully counter-clockwise.
NOTE: Complete dismantling of the assembly is not recommended. Should the needle thrust
bearing (193) require regreasing this can be accomplished with the bearing in situ after
screwing the main spring adjustment shaft (191) out of the adjustment nut (201). If it
becomes necessary to remove bearing (193) a procedure for its removal is detailed at Para
61.
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