Vinten Vision 30 - Page 31

31
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Mechanism block and secondary spring assemblies
Remove
24 The mechanism block assembly (12) is removed as follows (Fig 6.6):
24.1 Remove platform assembly as detailed at Para 9.
24.2 Remove top cover as detailed at Para 14.
24.3 Remove front cover as detailed atPara 16.
24.4 Remove end plate/adjustment thread assembly and main spring as detailed at Para 18.
24.5 Remove cross members as detailed at Para 20.5 and Para 20.6.
24.6 Unscrew and remove two M5 button head screws (14) from each end of load beam (174).
24.7 Remove two spring plugs (27), springs (26) and plunger-carriage assembly (25) from mechanism
block (Fig 6.2)
24.8 Lift out mechanism block assembly (12).
24.9 Retain shims (13) from tops of loading bars (119) and (130) noting their orientation for
replacement.
Dismantle
25 To dismantle the mechanism block assembly (12) continue as follows (Fig 6.6):
25.1 Unscrew and remove secondary spring adjustment plug (181) and inspect buffer pad-lower end
(182) for deterioration.
25.2 Unscrew and remove two M4 socket countersunk head screws (179) securing first stop plate-
secondary spring (178). Remove stop plate and inspect buffer pad-stop plate (180) for deterioration.
25.3 Repeat Para 25.2 for second stop plate-secondary spring.
25.4 Lift out secondary spring assembly (171).
25.5 Inspect rubber buffer-spring carriage (170) for deterioration.
25.6 Inspect vertical and horizontal track faces for scoring.
26 To dismantle the secondary spring assembly (171) continue as follows:
26.1 Remove spring guide-lower (177) and remove spring (176).
26.2 Withdraw screw (172) and separate guide-top (175) and load beam (174).
26.3 Degrease screw shank and spring guide-top.
26.4 Inspect buffer pads (173), on underside of screw (172) head and underside of load beam (174),
for deterioration.