Vinten Vector 700 Maintenance Manual page 40

Contents
Balance mechanism and support caps
22 To assemble the balance mechanism, proceed as follows
NOTE: Shim (18) is available in two thicknesses - 0.005 in. (3354-206) and 0.003 in. (3354-299).
Shim (39) 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 (except adjuster unit shim (13)), bearings, bushes and pivot pins should be
lightly lubricated with LM grease prior to assembly.
22.1 If bearings (12) were removed from mechanism housing (10), install centrally and secure with
Loctite 641.
22.2 If rear tilt buffer (20) was removed from mechanism housing (10), install using Loctite 415.
22.3 Referring to
horizontal track arm (17) as follows:
22.3.1 Measure the width across the upper bearing faces of the horizontal track
arm - dimension A
22.3.2 Measure the distance between the bearing faces of the upper drive
arm - dimension B
22.3.3 Subtract A from B, divide by 2 and, using shims (18), assemble two shim packs to this
figure, allowing not more than 0.002 in. clearance.
22.4 Position the horizontal track arm (17) and two shim packs in the upper drive arm (15). Install two
horizontal track arm pivot pins (16) from the inside, ensuring bearings are not damaged and pins are
underflush with the upper drive arm.
22.5 Referring to
mechanism housing (10) as follows:
22.5.1 Measure the width across the upper bearing faces of the mechanism
housing - dimension C.
22.5.2 Measure the distance between the bearing faces of the upper drive arm - dimension D.
22.5.3 Subtract C from D, divide by 2 and, using shims (18), assemble two shim packs to this
figure, allowing not more than 0.002 in. clearance.
22.6 Position the upper drive arm/horizontal track arm in the mechanism housing with the shim packs
between the inside bearing faces and one 0.005 in. shim (18) between each outside bearing face.
Install two upper arm pivot pins (22), ensuring pins are underflush with the faces of the mechanism
housing. Secure pins with grubscrews (8).
Fig 5.2, calculate the shims required between the upper drive arm (15) and the
Fig 5.2, calculate the shims required between the upper drive arm (15) and the
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