General; Disassembly; Base; Mechanism Housing Cover/Right-Hand Side Plate - Vinten Vision 250 Service Manual

Contents

General

1 This section details procedures for disassembly and assembly of the Vision 250 pan and tilt head.
Reference is made in the procedures to figures in the Illustrated Parts List
2 The head is constructed from precision components, many of which are of aluminium or magnesium
alloy. Several of the assembly procedures require the use of specific sealants, adhesives or lubricants. It is
advised that only experienced and properly equipped personnel with access to all necessary materials and
tools should attempt to overhaul, repair or replace components on these heads. The special tools and
consumable materials required for work on Vision 250 heads are listed in Section 3.
WARNING!: To prevent damage to socket screw heads, use the correct hexagonal
wrenches and ensure that they are in good condition.
The use of ball-ended hexagonal wrenches will facilitate dismantling and assembly.

Disassembly

Base

3 To remove the flat or spherical base
3.1 Remove four screws (5) securing base (4 or 16) to main assembly (1).

Mechanism housing cover/right-hand side plate

4 To remove the mechanism housing cover and right-hand side plate:
4.1 Referring to
washer (9) and pull the knob off the shaft (5). Retain the drag knob boss (10), two balls (11) and springs
(12).
4.2 Referring to
counter-clockwise.
4.3 Referring to
mechanism housing cover (2) to the mechanism housing assembly (21).
4.4 Referring to
balance adjustment stop (7) to balance knob assembly (22). Turn the head upside-down and push
down on screw (26) to disengage the balance adjustment stop. Remove three screws (25) and screw
(23) securing the balance knob assembly (22) to the mechanism housing assembly (27). Turn the
balance knob clockwise to disengage the balance knob assembly (22) from the adjustment bracket
assembly (8) and the potentiometer nut (28). Remove the balance knob and adjustment stop assembly
from the mechanism housing.
4.5 Referring to
4.6 Referring to
mechanism housing assembly (21).
4.7 Slide the centre lock knob (8) to the 'locked' position.
(Fig 6.1):
Fig 6.5, remove the plug (8) from the pan drag knob (6). Remove screw (7) and
Fig 6.4, peel off the self-adhesive balance label (24). Turn the balance knob (22) fully
Fig 6.2, tilt the platform for access and remove two screws (17) securing the
Fig 6.4, turn the balance knob (22) fully clockwise. Slacken screw (26) securing
Fig 6.3, remove two screws (7) securing right-hand side plate (6) to platform (15).
Fig 6.2, remove two screws (1) securing the mechanism housing cover (2) to the
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