36
20
To install the tilt drag unit:
, thread the battery connector (2G) through the hole in the battery housing
(8), then slide the battery housing into position in the mechanism housing (11).
20.2 Connect the wiring from the tilt drag unit (2A) to the connector in the mechanism housing.
, position the assembled tilt drag unit in the mechanism housing (19),
ensuring that the pin on the spring actuator seats correctly in the needle roller (23). Secure with three
screws (15).
Platform
21
To assemble the platform
21.1 If removed, install the dowel pin (2) in the platform. Dowel pin should protrude 4.25 mm above
platform surface.
21.2 Position the slide clamp block (8) on the spigot on the underside of the platform. Screw in the
slide clamp shaft (6).
21.3 Position the slide release (10) and spring (9) in the underside of the platform.
21.4 Push in the platform slide (47) to hold the slide clamp block and slide release in position.
21.5 Screw in the slide clamp shaft (6) until the platform slide (47) is held securely. Position the knob
(5) so that when it is turned fully counter-clockwise, the clamp is released and, when turned clockwise,
the clamp is applied before the stop is reached. Secure the knob with screw (4).
22
:
22.1 Position the platform on the head and secure with four screws (7)
Final assembly
23
To pre-load the balance spring
23.1 Apply Loctite 222E to thread of screw (38) and install it through the hole in the mechanism
housing.
23.2 Tighten screw until spring is lightly pre-loaded, then apply a further 2.5 turns.
23.3 Install self-adhesive mechanism housing label (41).
24
Install the pan and tilt brake knobs (
See “Brake knob adjustment” on page 21.
25
The pan and tilt drag control knobs are set so that drag begins to be felt between 1 and 2 on the scale.
To adjust the pan drag knob settings
25.1 Release the pan brakes.
25.2 Turn the drag control knob (3) until the grub screw (4) is accessible. Slacken the grub screw by
six turns.
25.3 Turn the indicator (2) to zero.