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14.28 Referring to Fig 6.3, install two Spirol pins (26) in the exposed face of labyrinth assembly (15)
and drive them in until the ends are below the face of the centre part of the labyrinth assembly.
14.29 Referring to Fig 6.2, remove mechanism housing cover (30).
14.30 Degrease six threaded holes in inner boss of spherical base (19) and six screws (29).
14.31 Degrease the outer race and the boss of spherical base (19). Install the bearing (21) in the
spherical base, ensuring it is correctly seated.
14.32 Seal the outer race of the bearing and the boss with Silcoset 153.
14.33 Lubricate needle roller thrust bearing with white bearing grease and assemble thrust bearing
components (17). position thrust washer (18) and thrust bearing (17) in spherical base (19).
14.34 Install friction plate assembly (16) in spherical base (19) and turn it to align holes for screws and
Spirol pins, noting that there is only one position in which all the holes are aligned.
14.35 Apply Loctite 222E to threads of six screws (25) and secure friction plate assembly (16) to
spherical base (19). Do not tighten screws (31) at this stage.
14.36 Install one Spirol pin (15) through friction plate (16) into spherical base (19), ensuring that the
Spirol pin is driven in until the end is below the surface of the friction plate. Tighten six screws (25).
14.37 Using a degreasing fluid which does not contain an oil-based corrosion inhibitor (See
“Consumable materials” on page 19), thoroughly clean the face of the friction ring in friction plate
assembly (16).
14.38 In the constant drag assembly (12), identify the single 3.0mm (0.118in.) diameter hole which lies
between two of the six 3.3mm (0.130in.) diameter holes for the fixing screws. Position a new paper
gasket (13) on the constant drag assembly (12), ensuring that it is correctly oriented to align the seven
notches with the holes for screws and the single 3.0mm (0.118in.) diameter hole and that the outer
edge of the gasket lies within the register.
14.39 As an aid to handling, temporarily insert screws (20) in the threaded holes in the outside boss of
spherical base (19).
14.40 Locate friction plate (16) on the projecting part of the pan axis spigot and engage the machined
rim of spherical base (19) in the register of the pan top plate, ensuring that the seven holes are aligned
and that the paper gasket is correctly positioned.
14.41 Secure the spherical base to the pan top plate using six screws (29), turning the assembly as
necessary to gain access to the heads of the screws. Do not tighten the screws at this stage.
14.42 Remove screws (20), if fitted, and stand the assembly on the boss of the spherical base.
14.43 Install one Spirol pin (8) in the pan top plate, ensuring that it is installed in the 3.0mm (0.118in.)
diameter hole in the plate. Drive the Spirol pin in until the end is level with the surface of the pan top
plate.
14.44 Fully tighten six screws (29).
14.45 Securely support mechanism housing (6) so that the spigot for the pan axis points upwards.
14.46 Degrease threads of pan shaft screw (22) and four screws (20).
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