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10.11 Remove six screws (29) turning the spherical base as necessary for access.
10.12 Identify the 3.0mm (0.118in.) dia hole which houses Spirol pin (8). Using a suitable punch, tap
the Spirol pin downwards to separate the spherical base from the pan top plate.Discard gasket (13)
10.13 Remove Spirol pin (8) from the spherical base if required.
10.14 Remove bearing (21) if required. The bearing is sealed by silicone rubber adhesive, all traces of
which should be removed from the bearing and the spherical base.
10.15 If access is required to pan drag thrust bearing (17) or thrust washer (18), remove six screws (25)
and drive out two Spirol pins (15) which secure friction plate assembly (16) in the spherical base (19).
10.16 Support the mechanism housing securely with the pan axis spigot pointing upwards.
10.17 Referring to Fig 6.6, remove the drag knob components as follows:
10.17.1 Remove the drag knob sleeve (1), which is secured by adhesive.
10.17.2 Remove screw (2) and pan drag knob (3).
10.17.3 Unscrew drag knob boss (4) and remove two shim washers (5) and eight disc springs
(6), noting the arrangement of the disc springs.
10.17.4 Remove grommet (8) complete with detent ring (7).
10.18 Referring to Fig 6.3, withdraw pan drag knob shaft (4) from mechanism housing.
10.19 Remove four screws (1), which are secured with Loctite, and withdraw pan drag bell crank
trunnion (3) complete with bell crank (2), pan drag actuator adaptor (41) and two dowel pins (5).
10.20 Start two M3 screws, with threads at least 20 mm long, in the threaded holes in the boss of
labyrinth (14). Turn the screws into the threaded holes until they contact the shoulder of the pan axis
spigot. Tighten the screws equally to draw labyrinth (14) off the pan axis spigot.
10.21 Remove shim pack (27) and spacer (28). Retain shim pack for reassembly
10.22 To remove the constant drag assembly, or if access is required to bearing (11) or to pan brake
disc (10) it is necessary to remove pan brake plate (37). Proceed as follows:
10.22.1 In the constant drag assembly (12), identify the 3.3 mm (0.130 in.) hole which lies
between two of the six holes for the fixing screws. Turn the pan unit top plate to align this hole
with screw (30) which secures the pan brake plate (31) to the mechanism housing. Pass a 2.5
mm hexagon wrench through the hole and engage it in the socket of screw(36).
10.22.2 Progressively undo the screw whilst drawing the pan top plate, complete with the pan
brake disc (10) and bearing (11) off the pan axis spigot and at the same time easing the pan
brake plate off dowel pin (32).
WARNING!: Do not attempt to pull constant drag assembly (12) from the pan axis spigot
as this will damage the pan brake disc.
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