General; Disassembly; Encoder - Vinten Vision 250 E Maintenance Manual

Contents

General

1 This section details procedures for disassembly and assembly of the Vision 250 E pan and tilt head.
Reference is made in the procedures to figures in the
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 E heads are listed in
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

Encoder

NOTE: Special tools will be required to assemble the encoder - see
Materials.
The pan and tilt encoder housings must be separated to enable removal from the head.
3 To remove and dismantle the encoder
3.1 Note the position and remove four screws (17) securing the tilt mechanism to the mounting (25).
3.2 Carefully manoeuvre the tilt encoder assembly off the pan encoder assembly and right-hand side
plate, disengaging the tilt drive screws from the clips (29).
3.3 Pull off the tilt mechanism as far as the wiring will allow, then disconnect the socket wiring
assembly (10) from the pan encoder (7).
3.4 Remove four screws (20) securing encoder assembly to main assembly (33).
4 To further dismantle the encoder
4.1 Remove four screws (28) securing the tilt encoder drive cover (9) on the tilt housing (27).
4.2 Pull off the tilt encoder drive cover (9) as far as the wiring will allow, then disconnect the socket
wiring assembly (10) from the tilt encoder (7). Pull the pan encoder wiring out of the tilt housing (27).
4.3 If required, unscrew the locking ring to remove the socket wiring assembly (10) from the tilt
encoder drive cover (9).
4.4 Remove three screws (32) securing the drive arm (31) to the tilt encoder drive gear (27)
4.5 Remove three screws (19) securing the clamp ring (3) on the tilt encoder housing (27).
Illustrated Parts List (Page
(Fig 6.7):
(Fig 6.7):
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47).
Tools and Materials (Page
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23).
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