Encoder - Vinten Vision 250 E Maintenance Manual

Contents

Encoder

NOTE: Special tools will be required to assemble the encoder - see
Materials.
The pan and tilt encoder housings must be connected after installing the encoder on the
head.
31 To assemble the encoder
31.1 If removed, secure clips (29) in the housing (25) and drive arm (31) using Loctite 415.
31.2 If removed, lubricate bearing (24) with Castrol LM grease and install in the housing (25) using
bearing press tool 3790-903TL. Secure the bearing with four washers (22) and screws (21).
31.3 Press the base/gear assembly (23) into the assembled bearing and housing.
31.4 Install the clamp ring (2) on the assembled base/gear, bearing and housing and secure with six
screws (1).
31.5 If removed, install circlip (15) on spindle (14). Position idler gear (13) and spindle (14) in the
housing (25), engaging with the base/gear assembly (23).
31.6 Install pan encoder (7) in the housing (25) and secure with two screws (11).
31.7 Turn the gears of the pan anti-backlash pinion (12) until the spring is fully tensioned. Holding the
gears in tension, install the pinion in the encoder, engaging with the idler gear (13).
31.8 Ensure the anti-backlash pinion (12) is flush with the idler gear (13), then secure the pinion shaft
in the pan encoder (7) with two grub screws (8).
31.9 Check the free movement of the gear train, ensuring there is no backlash.
31.10 Install cover plate (16) and secure loosely with screws (19), in positions noted during
disassembly. if removed, install two dowel pins (18), then tighten screws (19).
31.11 If removed, press the bearings (4) and (5) into the tilt encoder drive gear (30). Position the gear in
the tilt encoder housing (27).
31.12 Turn the gears of the tilt anti-backlash pinion (26) until the spring is fully tensioned. Install the
pinion in anti-backlash tool
pin end of the tool shaft through the pinion.
31.13 Turn tilt encoder drive gear (30) so that the hole in the gear is visible through the hole in the tilt
encoder housing (27).
31.14 Position the shaft pin of tool
the tilt anti-backlash pinion (26) with the tilt encoder drive gear (30).
31.15 Remove the outer part of tool 3790-904TL.
31.16 Position the tilt encoder (7) on the tilt anti-backlash pinion (26) and secure to the tilt encoder
housing (27) with two screws (6). Remove the shaft of tool 3790-904TL, then secure the pinion shaft in
the tilt encoder (7) with two grub screws (8).
31.17 Check the free movement of the gear train, ensuring there is no backlash.
(Fig 6.7):
3790-904TL so that the pins on the tool holds the gears in tension. Insert the
3790-904TL in the hole in the tilt encoder drive gear (30) and engage
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