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Tilt drag mechanism
NOTE: An extended 3 mm AF spherical-ended hex wrench (Vinten Part No. 3354-931TL) is
required to remove the tilt drag mechanism.
The tilt drag mechanism contains Vinten fluid No. 3. A good supply of clean rags should be
to hand.
11
To remove the tilt drag mechanism
11.1
Prepare for fluid loss or collection.
11.2 Remove five screws (2) securing the tilt drag cover assembly to the mechanism housing (1).
11.3 Pull off the tilt drag cover assembly. Slight tapping of the tilt drag cover (24) may be required.
11.4 Drain off the Vinten fluid No. 3.
12
To dismantle the tilt drag mechanism, proceed as follows
12.1 Carefully prise out the knob bung (17).
12.2 Remove screw (18) and washer (16). Pull off the drag knob (15).
12.3 Remove three screws (20) securing drag knob retainer (21) to outer boss (22). Remove the
retainer and unscrew the knob boss/threaded shaft (19). This will free the actuator cam shaft (30),
which may be removed from the rear of the unit. Remove the knob boss/threaded shaft (19) and the
two thrust washers and the thrust race (13) from the outer boss, noting orientation of components for
assembly. Discard 'O' ring (14) from the knob boss/threaded shaft and 'O' ring (29) from the actuator
cam shaft (30).
12.4 Remove three screws (12) securing outer boss (22) to the tilt drag cover (24). Remove and
discard 'O' ring (23).
12.5 Remove and discard gasket (3).
NOTE: The drag shoe assemblies (5, 28) and actuator links (6, 26) are handed. Note orientation for
assembly.
12.6 Pull assembled drag shoes and actuator links off two dowel pins (10).
12.7 Pull drag shoe assemblies (5, 28) off dowel pins (4) in actuator links (6, 26).
12.8 Remove Spirol pins (9) attaching extension spring (8) to actuator links (6, 26).
12.9 Slacken grubscrew (25) and drive out dowel pin (27) to separate actuator links (6, 26)
12.10 Remove dowel pins (4) from actuator links (6, 26) if required.
12.11 Remove two dowel pins (7), two dowel pins (10) and dowel pin (1) from the tilt drag cover (24) if
required.
(Fig
6.9):
(Fig
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