Pan Drag Mechanism; Balance Mechanism - Vinten Vision 250 E Maintenance Manual

Contents

Pan drag mechanism

22 Install the drag mechanism as follows
22.1 Apply Easyrun 50 grease to gear on pan drag assembly (13).
22.2 Thoroughly degrease the brake pads on the pan brake kit (22) and both faces of the pan brake
drum (13) with 3M VHB surface cleaner.
22.3 Unscrew the pan brake shaft (19) so that the brake is in the OFF position.
22.4 Note the position of the brake pad cut-out in the pan drag assembly (13), then lower the pan drag
assembly onto the mechanism housing (23), ensuring that the pan brake drum is positioned between
the pan brake pads. Rotate the pan drag assembly (13) slightly in either direction until the dowel in the
pan drag assembly engages with the corresponding hole in the mechanism housing (23).
22.5 Working inside the mechanism housing (23), secure the pan drag assembly (13) with two screws
(1), three screws (2), one screw (3) and one screw (24), in the positions noted during disassembly.

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.
NOTE: Lubricate all bearings, shims and pivot points with LM grease.
23 If dismantled, assemble the balance mechanism as follows
23.1 At each spring assembly, lubricate pivot blocks (10) with Chesterton grease. Pass spring shaft
(12) through pivot block (10) and install balance spring (13) and spring cap (14) on spring shaft. Install
screw (19) using Loctite 270 and tighten until end movement of spring is eliminated, then apply a further
3/4 turn. Press bearings (9, 11) into pivot block (10).
NOTE: The long and short links (Items 15 and 17) are supplied with the appropriate pivot pins (16)
as matched sets. Ensure that the appropriate pins are refitted in the links, or replaced as
sets.
23.2 Install long link (15) in the adjustment bracket assembly (8) and secure with matched pivot pin
(16). Tighten pivot pin fully, back off, then apply Loctite 242E and torque tighten to 1.8 Nm (16 lbf in.).
23.3 Install a spring assembly on each side of the adjustment bracket assembly (8).
23.4 Press two bearings (3) into the load beam (4). Secure each spring assembly to the load beam
with two screws (5).
24 Install the balance mechanism as follows
24.1 Ensure tilt drag assembly (1) is horizontal.
(Fig 6.5):
(Fig
(Fig 6.4):
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