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10.23 Remove six screws (7), which are secured with Loctite, and two Spirol pins (8) to release pan
brake clamp (9), pan brake disc (10) and give access to bearing (11).
Bubble illumination unit
11 Remove the bubble illumination unit from the mechanism housing as follows (Fig 6.5):
11.1 Prise up a corner of graphic (4), remove it completely and discard it.
11.2 Remove old adhesive securing PCB and wiring into mechanism housing.
11.3 Remove screw (6) and withdraw bubble illumination unit assembly (2) from mechanism housing.
Assembly
Bubble illumination unit
12 Install the bubble illumination unit in the mechanism housing as follows (Fig 6.5):
12.1 Feed PCB part of the bubble illumination unit (2) into the round hole in the side of the mechanism
housing, then out through the rectangular hole in the back face of the housing.
12.2 Ensuring that the wires are not trapped, seat the cylindrical plastic moulding in the housing and
secure it with self-tapping screw (6). Lay any surplus wiring on top of the PCB, away from the switch.
12.3 Seat the PCB in the rectangular recess and secure it with Silcoset RTV 738, keeping the
adhesive away from the switch, but using sufficient to support the graphic at the centre.
12.4 Position the self-adhesive graphic (4) in the seating on the rear face of mechanism housing (1)
and press the edges into position. Allow to cure for 24 hours.
RH side plate bearing
13 Referring to Fig 6.5, if RH side plate bearing (7) has been removed from mechanism housing (1), a
replacement bearing may be installed without heating the housing, but it is essential that a suitable press,
fitted with a mandrel adapter and support ring to match the bearing, is used. Proceed as follows:
13.1 Remove all traces of old adhesive from the bearing seating in mechanism housing (1) and from
bearing (7). Degrease bearing seating and outer race of bearing.
13.2 Apply Loctite 641 to outer race of bearing and press bearing into mechanism housing, ensuring
that it is properly seated.
Pan unit assembly
WARNING!: The labyrinth assembly (3364-44), the constant drag assembly (3364-45)
and the spring actuator (part no. 3364-908SP) require special equipment for assembly
and should not be dismantled. Any faulty assembly must be replaced. If the labyrinth
assemblies, constant drag assemblies or spacers (3364-300) are replaced, it will be
necessary to adjust the thickness of the pan shim pack (Para 14.14) or tilt shim pack
(Para 17.18). This requires the use of shim setting tool (T61463).
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