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Other components
Bearings
59 Regreasing of the four bearings (62, Fig 6.3 and Fig 6.9) and the bearing (65, Fig 6.3) can be
accomplished with the bearings in situ after gaining access by removing the appropriate assemblies.
60 Should a bearing require replacement the casting in which it is mounted must be heated to 120°C to
free the bearing. To fit a replacement bearing the appropriate casting must be heated to 120°C immediately
prior to fitting the bearing. Care must be exercised to ensure the bearing is correctly seated. In the case of the
needle bearing (65) correct seating is with the bearing flush with the bottom of the counterbore of the pan drag
lever (76) bore.
61 The needle thrust bearing (193, Fig 6.7) on the end plate/adjustment thread assembly is removed as
follows:
61.1 Unscrew and remove adjustment nut (201) from adjustment shaft (191).
61.2 Fit a tube (dimensions: 14 mm ID, 35 mm long) over the adjustment shaft (191) shoulder.
61.3 Refit adjustment nut (201) to the shaft (191) and rotate BALANCE adjustment knob (186)
counter-clockwise until shaft (191) is driven our of knob centre (189) and away from bearing (193).
62 The end plate/adjustment thread assembly needle thrust bearing (193,Fig 6.7) is refitted as follows:
62.1 Strip adjustment knob, fit new starlock washer (188) into the knob (186) and reassembly.
62.2 Fit thrust washer (192), bearing (193) and thrust washer (194) onto shaft (191).
62.3 Pass splined end of shaft (191) through central hole of end bracket (195).
62.4 Fit shim washer (190) over splines.
62.5 Press adjustment knob centre (189) onto splines until 'O' ring (187) is slightly compressed, i.e.
starlock washer (188) grips shaft (191).
Lower carriage roller
Remove
63 A lower carriage roller (17) is removed as follows (Fig 6.3):
63.1 Remove the mechanism block assembly as detailed at Para 24.
63.2 For each fixed roller:
63.2.1 Unscrew M4 socket grubscrew (86)
63.2.2 Slide axle-carriage roller lower (85) inwards and remove roller (17) and two shims (18).
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