Vinten Vector 70 Maintenance Manual page 40

Contents
21.10 Install the bevel gear (15) on the adjuster shaft (11) and secure with Spirol pin (16). Tighten
grubscrew (8). If a new bevel gear is being installed, proceed as follows:
21.10.1 Install the bevel gear (15) on the adjuster shaft (11). Push the bevel gear onto the shaft
to take up end float and tighten the grubscrew (8).
21.10.2 Using a 4 mm. dia drill in the pilot hole provided, drill through the boss of the bevel gear
and the shaft.
21.10.3 Install Spirol pin (16).
Balance mechanism
NOTE: The balance mechanism, RH support cap, LH support cap, tilt brake, balance knob and
centre lock are all assembled/installed during this procedure.
22 To assemble the balance mechanism, proceed as follows
NOTE: Shim (17) is available in two thicknesses - 0.005 in. (3354-206) and 0.003 in. (3354-299).
Shim (43) is available in three thicknesses - 0.005 in. (3354-209), 0.003 in. (3354-217) and
0.002 in. (3354-433). Combinations of shims should be used as required, ensuring that
components are shimmed equally on each side.
All shims, bearings, bushes and pivot pins should be lightly lubricated with LM grease
prior to assembly.
22.1 If bearings (11) were removed from mechanism housing (10), install centrally and secure with
Loctite 641.
22.2 If rear tilt buffer (18) was removed from mechanism housing (10), install using Loctite 415.
22.3 If roller bearing (30) was removed from tilt drag shaft (29), install using Loctite 641.
22.4 Referring to
horizontal track arm (16) as follows:
22.4.1 Measure the width across the upper bearing faces of the horizontal track
arm - dimension A
22.4.2 Measure the distance between the bearing faces of the upper drive
arm - dimension B
22.4.3 Subtract A from B, divide by 2 and, using shims (17), assemble two shim packs to this
figure, allowing not more than 0.002 in. clearance.
22.5 Position the horizontal track arm (16) and two shim packs in the upper drive arm (14). Install two
horizontal track arm pivot pins (15) from the inside, ensuring bearings are not damaged and pins are
underflush with the upper drive arm.
22.6 Referring to
mechanism housing (10) as follows:
Fig 5.1, calculate the shims required between the upper drive arm (14) and the
Fig 5.1, calculate the shims required between the upper drive arm (14) and the
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