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6.10 Undo screw (35) as far as possible without separating from actuator shaft (31).
6.11
Manoeuvre balance mechanism out of mechanism housing assembly. Ensure all shims (29) and
circlip (12) are removed from mechanism housing assembly.
6.12 The balance mechanism may now be dismantled if required. Do not remove pins from spring
actuator (30).
Pan mechanism
7
To remove/dismantle the pan mechanism proceed as follows (
7.1
Remove the platform (
7.2
Remove the tilt mechanism and mechanism housing cover (
7.3
Remove the balance mechanism (
).
7.4
Remove the pan drag knob cap (3). Remove the screw (4) and pull off the pan drag knob (5).
7.5
Remove three screws (2) securing pan drag knob retainer (1). Remove the retainer and unscrew
and remove the pan drag shaft (7). The pan drag knob boss (6) is secured to the shaft with Loctite.
7.6
Slacken the pan drag lever screw (32) and lift the pan drag lever (33) and clevis (34) off the drag
actuator (21). Remove actuator shim (29).
7.7
If required, drive out dowel pin (30) to separate lever (33) and clevis (34). Discard self-locking
ring (31).
7.8
Remove screw (12) and washer (13) from end of bowl clamp stud (27)
7.9
Remove six screws (25) which secure the spherical base (24) to pan drag top plate (19). Gently
ease the base away from the top plate. When the base is removed it will contain most of the Vinten
Fluid No. 3. The bowl clamp stud (27) is secured to the base using Loctite. Remove and discard ‘O’ ring
(23).
7.10 Remove two screws (26) securing drag shoe assembly (22). Remove drag shoe assembly and
the pan drag actuator (21). Remove and discard ‘O’ ring (17).
7.11
Remove pan drag top plate (19) and the thrust race and two thrust washers (18), noting
orientation of components for assembly. Note the orientation of omniseal (20), with the open side facing
towards the spherical base. Remove and discard the omniseal.
7.12 Remove two screws (28) securing pan bearing housing (15) to mechanism housing assembly
(10). Remove and discard ‘O’ ring (16) from groove in pan bearing housing.
NOTE:
This unit contains Vinten Fluid No. 3. A good supply of clean rag should be to hand.
NOTE:
The design of the pan drag top plate and spherical base changed from Serial No. 1288.
Ensure correct top plate, spherical base and ‘O’ ring are replaced.