Balance Mechanism; Pan Drag Mechanism - Vinten Vision 250 Service Manual

Contents

Balance mechanism

WARNING!: Pivot pins (15) are case-hardened and may chip around the screwdriver
slot. Use the correct size screwdriver and wear eye protection.
8 To remove the balance mechanism
8.1 Remove pivot pin (15) securing short link (17) and potentiometer actuator lever (18) in
mechanism housing (27). Remove potentiometer actuator lever and potentiometer nut (28). Swing link
clear of housing and pull out potentiometer rod (20).
8.2 Remove pivot pin (15) securing long link (16). Swing link clear of housing and pull assemble
balance mechanism out of mechanism housing (27). Ensure shims (2) between load beam (4) and tilt
drag assembly (1) are retained.
9 To dismantle the balance mechanism
9.1 Remove two screws (5) securing each spring assembly to the load beam (4). If required, push
bearings (3) out of load beam.
9.2 Pull each spring assembly off the adjustment bracket assembly (8). Remove two pivot pins (15)
securing long link (16) and short link (17) to adjustment bracket assembly.
NOTE: Screws (19) are retained in the spring shafts (12) using Loctite 270 and may be immovable.
9.3 If required, remove screw (19) to free spring cap (14), balance spring (13) and pivot block (10)
from spring shaft (12). Push bearings (9, 11) out of pivot block (10).

Pan drag mechanism

10 To remove the pan drag mechanism
NOTE: The use of ball-ended and articulated hexagonal wrenches will facilitate the following
operation.
10.1 Working inside the mechanism housing (26), remove two screws (1), three screws (2), one screw
(3) and one screw (27). Note location of screws for reassembly.
10.2 Ensure the pan brake knob (2) is turned fully counter-clockwise to the OFF position, then pull the
pan drag mechanism (15) away from the mechanism housing (26).
WARNING!: Do not attempt to dismantle the pan drag mechanism.
(Fig 6.4):
(Fig 6.4):
(Fig 6.5):
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