20
CyScan Positioning System • Installation and Maintenance Guide r1.1
GCS
GCS
Stage 4 - The Motor Gearbox
To remove the Motor Gearbox:
1 Using a 4mm AF hex key, loosen and
remove the ring of six outermost M5 x
20 screws and bonded seals of the
sensor motor gearbox top plate.
2 On the right hand side of the controller
board, locate the motor power and data
cables. Cut cable tie and elastomer seal
on power connector. Disconnect both of
these cables from their connectors and
ensure that the cables are free to move
as the motor/gearbox unit is removed.
3 Lift the complete motor gearbox assem-
bly vertically upwards and away from the
sensor body, ensuring that its two cables
do not snag.
To fit the Motor Gearbox:
1 Place the head motor gearbox assembly
over the sensor frame and orient it so
that the motor is towards the Bow end
of the sensor. Slowly lower the assembly
into the sensor frame, taking care to
route the two motor cables neatly
towards the Bow end of the controller
board.
2 Seat the motor gearbox assembly onto
the top ring of the sensor frame so that
the six mounting holes of the assembly
correspond to those of the frame.
3 Attach the motor power and data cables
to the appropriate connectors in the top
right hand corner of the controller
board. Add cable ties to the leg of the
frame and secure cables to these. Place
elastomer on the power connector to
maintain in position.
4 Insert M5 x 20 hex head screws with M5
bonded seals into the six mounting holes
around the top ring of the motor
gearbox assembly. Using a 4mm A/F hex
key, tighten the six screws in a staged
and even manner until all are tight.
When screws are secure, smear a thin
layer of silicone grease around the screw
heads and washers to maintain a water-
tight seal.