Raymarine Mk II Manuale utente
MK II Wheel
Drive
Installation Guide
Document number: 87063-1
Date: December 2005
87063_1.book Page 1 Monday, December 19, 2005 3:22 PM
87063_1.book Page 2 Monday, December 19, 2005 3:22 PM
MK II Wheel Drive 3
System layout
Boat's electrical
distribution panel
Rudder position sensor
Control unit
Fluxgate compass
NMEA
instrument
or navigator
Wheel drive
D8908-1
Course computer
87063_1.book Page 3 Monday, December 19, 2005 3:22 PM
4 MK II Wheel Drive
Parts supplied
D8885-1
Wheel drive parts
Clamp screw,
M5 x 16 mm (x6)
Wheel drive
Pedestal bracket
Spoke clamp (x3)
16 mm spoke
clamp insert (x3)
12 mm spoke
clamp insert (x3)
6 mm
drill bit
3 mm
allen key
4 mm
drill bit
Power cable
4.5 m (15 ft)
Bracket screw,
No 10 x 3/4 in (x4)
Cable clip
and screw,
No 6 x 1/2 in
Optional: Bulkhead/box pedestal fitting kit E15017 (if required)
Rudder position sensor
Tiller pin
Ball joint (x2)
Stud
Nut (x2)
No 8 x ¾ inch
Countersunk head screw (x2)
No 8 x ¾ inch
Pan head screw (x3)
87063_1.book Page 4 Monday, December 19, 2005 3:22 PM
MK II Wheel Drive 5
Tools required
1. Tape measure (metric/imperial)
2. Pliers and cross-head/pozi-drive screwdriver
3. Hammer and center punch
4. Pencil, masking tape
5. Spanner (Wrench) for the wheel nut
6. Washing-up liquid (to lubricate the spokes)
7. Hacksaw to cut the pedestal bracket
8. Power/battery Drill
9. 4 mm + 6 mm drill bits (supplied)
10. 3 mm allen key (Hex key, supplied)
87063_1.book Page 5 Monday, December 19, 2005 3:22 PM
6 MK II Wheel Drive
Wheel drive
The Raymarine wheel drive will fit 3, 4, 5, 6, 7 or 8 spoke wheels. It is designed to operate with
steering systems with between 1 to 3.5 turns lock to lock.
Wheel drive – main parts
Installation stages
Installing the wheel drive involves four steps:
1. Drilling the spoke clamp holes in the front cover.
2. Securing the wheel drive to the wheel.
3. Attaching the pedestal bracket.
4. Connecting the drive to the course computer.
Clamp screw,
M5 x 16 mm (x6)
Wheel drive
front cover
Pre-drilled spoke
clamp holes (x2)
Bracket screw,
No 10 x 3/4 inch (x4)
Clutch lever
Motor tube
Cable socket
Cable plug
Bracket pin
Pedestal
bracket
D8886-1
Spoke clamp (x3) Clamp insert (x3)
87063_1.book Page 6 Monday, December 19, 2005 3:22 PM
MK II Wheel Drive 7
Drilling the spoke clamp holes
1. Remove the wheel drive front cover:
• the front cover is held onto the wheel drive by three ‘push-fit’ posts which sit in three
sockets on the drive ring
• to remove the cover, hold the motor in one hand and use your other hand to pull the
cover up and away from the drive unit (as shown below)
2. Identify the appropriate spoke clamp holes for your wheel. With the arrow at the top, refer
to the following diagrams:
• the holes are numbered inside the cover (e.g. if you have a 5 spoke wheel, you need to
drill the 4 locations marked with ‘5’)
• mark the appropriate spoke clamp holes and check them by holding the cover against
your wheel
D8888-1
D8889-1
5 spokes 7 spokes
Top 2 spoke clamp holes
are pre-drilled
87063_1.book Page 7 Monday, December 19, 2005 3:22 PM
8 MK II Wheel Drive
Note:
The wheel drive is designed to work with 3 spoke clamps on 4 or 8 spoke wheels. For cosmetic
reasons, however, you may want to fit an extra spoke clamp to the fourth spoke. Raymarine dealers can
supply an extra spoke clamp (part number A18089).
3. Drill the appropriate spoke clamp holes using the larger of the supplied drill bits (6.0 mm
or 1/4in):
• drill from the inside, placing a piece of scrap wood under the cover to produce a clean
exit hole
• you will need to drill 4 new holes so the cover has 6 holes in total (2 for each spoke
clamp)
Note:
The spoke clamps will cover these exit holes, so they will not be visible when the wheel drive is
installed.
D8892-1
3 or 6 spokes 4 or 8 spokes
Top 2 spoke clamp holes
are pre-drilled
Piece of scrap wood
D8894-1
87063_1.book Page 8 Monday, December 19, 2005 3:22 PM
MK II Wheel Drive 9
4. Align the cover with the wheel drive:
• the two pre-drilled holes (marked with an arrow) must line up with their matching pair
of threaded inserts on the drive ring (also marked with an arrow)
• make sure that the other spoke clamp holes align with their threaded inserts
Note:
The cover will only fit back onto the wheel drive when you have aligned the two parts correctly.
5. Fit the cover back onto the wheel drive:
• press the cover in the three places shown on the diagram below to push each of the
posts back into its locating socket
Note:
This step is easier with the clutch engaged.
Pre-drilled holes
(marked with arrow) Pair of threaded inserts
(marked with arrow)
Drive ring
Front cover Drive unit
D8896-1
D8897-1
TOP
87063_1.book Page 9 Monday, December 19, 2005 3:22 PM
10 MK II Wheel Drive
Securing the wheel drive to the wheel
1. Remove the wheel from the pedestal and place it on top of the drive unit, with the front of
the wheel and drive both facing up.
2. Using the wheel drive template at the end of this booklet, select the correct set of spoke
clamp inserts for your wheel:
• measure the spoke diameter at a distance of about 135 mm (5.3 in) from the center of
the wheel
• select the appropriate set of inserts: the wheel drive is supplied with 2 sets of 3 inserts
suitable for 12 mm (1/2in) and 16 mm (5/8in) diameter spokes – each insert is marked
with its size
3. Fit the first spoke clamp:
• lubricate the spoke with washing-up liquid – so you can slide the spoke clamp along
the spoke to adjust its position
• place the insert on the spoke about 135 mm (5.3 in) from the wheel center – this dis-
tance is not critical as the wheel drive will self-center as you fit all 3 spoke clamps
• place the spoke clamp onto the insert, making sure that you have correctly located the
clamp insert in the clamp
• locate 2 of the clamp screws (M5 x 16 mm allen-head screws)
•lightly tighten the screws using the 3 mm allen key (Hex key, supplied)
4. Repeat step 3 to fit the other 2 spoke clamps. As you fit each one, adjust the position of the
wheel relative to the wheel drive so the holes in the clamp line up with the holes in the
cover. As you do this, the wheel drive will self-center on the wheel.
5. After fitting all 3 spoke clamps, fully tighten the screws.
D8898-1
135 mm (5.3 in)
87063_1.book Page 10 Monday, December 19, 2005 3:22 PM
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