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22.17 Position LH actuator (34) in lower LH end of vertical track member (7), with a 0.005 in. shim (17)
on each side. Install pivot pin (31) and secure with grubscrew (8).
NOTE: Final adjustment of bearings is carried out after assembly of the head.
22.18 At each actuator, tighten screw (33) until all slack in the bearing is eliminated but actuator moves
freely on its pivot. Actuator should just fall from the horizontal position under its own weight.
22.19 Position the assembled vertical track member and actuators in the mechanism housing so that
the lift off stop pin (item 16,
Align holes in actuators with holes in bearings (11).
22.20 Install flanged bush (39) in RH actuator shaft (36). Instal two snap rings (38) and bearing (11) on
RH actuator shaft.
22.21 Install RH actuator shaft in mechanism housing, passing shaft through RH actuator (42),
bearings (11) and shim (12), Do not push the shaft fully home.
22.22 Position bevel pinion (41) in adjuster assembly. Push bevel pinion shaft (37) through RH actuator
shaft and into bevel pinion. Secure bevel pinion with two grubscrews (40), which engage in dimples in
bevel pinion shaft (37).
22.23 Push the RH actuator shaft fully home in the mechanism housing.
22.24 Install omniseal (27) in tilt drag shaft seal plate (26), ensuring seal is correctly oriented with open
side outwards. Slide plate and omniseal over tilt drag shaft (29). Adhere gasket (25) to seal plate (26)
using Hylomar gasket sealant.
22.25 Install bearing (24) on tilt drag shaft (29) and secure with snap ring (23). Install tilt drag shaft in
mechanism housing, passing shaft through LH actuator (34), bearings (11) and shim (12),
22.26 If removed, install two bearings (6) in each platform pivot block (5). Centralize the bearings and
position the slots in the bearings diametrically opposite to the slots in the pivot blocks. Secure lightly
with screw (3).
NOTE: Final adjustment of bearings is carried out after assembly of the head.
22.27 At the front bearing of each platform pivot block, install a pivot pin (31) and tighten screw (3) until
all slack in the bearing is eliminated but pivot block moves freely on its pivot pin. Pivot block should just
fall from the horizontal position under its own weight. Remove pivot pins (31).
22.28 On the tilt brake side pivot block (5), position a 0.005 in. shim (17) on the outside and sufficient
shims (17) on the inside to take out side play and install the pivot block (5) in the mechanism housing
(10). Install pivot pin (9) slightly underflush and secure with grubscrew (8). At the platform pivot block,
tighten screw (3) until all slack in the bearing is eliminated but pivot block moves freely on its pivot pin.
Pivot block should just fall from the horizontal position under its own weight.
22.29 Install and adjust the tilt drag side pivot block (5) in the mechanism housing in a similar manner,
but do not fit any shims (17).
22.30 On the tilt brake side pivot block (5), position a 0.005 in. shim (17) on the outside and sufficient
shims (17) on the inside to take out side play and install the pivot block (5) in the vertical track member
(7). Install pivot pin (31) slightly underflush and secure with grubscrew (8).
Fig 6.7
or item 17,
Fig
6.8) engages in the slot behind the RH vertical track.
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