Raymarine ST3000 - Mounting the Drive Unit and Belt

44 ST3000 Wheel Drive Autopilot - Owner’s Handbook
4 Installing the Wheel Pilot
The drum comes with three complete sets of spacers to fit differing
spoke diameters.The spoke diameter is marked alongside each
spacers – break off the appropriate spacers for your wheel spokes.
Use the U-clamps to secure the wheel drum to the wheel spokes:
• roughly position the drum on the wheel and then lightly tighten
the clamp nuts
• check if the drum is central by spinning the wheel
• re-position the drum until it is central – with a total run-out less
than 2 mm (
1
/
16
in)
• when the drum is central on the wheel, tighten the clamp nuts
Mounting the drive unit and belt
Standard installation
The drive unit is normally mounted on the cockpit side wall. If the
standard belt does not allow a convenient location for the mounting
clevis, you will need to purchase one of the alternative belt sizes to
increase or decrease the radial offset of the mounting pin.
Belt name Part number Radial off-set
B- D037 512 mm (20.1 in)
A- D038 546 mm (21.5 in)
Standard belt D039 (supplied) 598 mm (23.5 in)
A+ D040 717 mm (28.2 in)
B+ D041 850 mm (33.5 in)
Spoke
Spacers
Drum
D5636-1
2 mm maximum
run out
81194_1.book Page 44 Wednesday, July 25, 2001 12:10 PM