Maintenance, Control unit, Junction unit – Simrad AUTOPILOT SYSTEM AP50 User Manual
Page 163: Rudder feedback, Compass (rc25/rfc35r), Drive unit, 1 control, Unit, 2 junction, 3 rudder

Maintenance
20221032B
161
7 MAINTENANCE
7.1 Control unit
Under normal use, the AP50 Control Unit will require little 
maintenance. The case is made from seawater resistant 
aluminum and it has a polyester coating to withstand the 
rigorous conditions of an exposed cockpit. It is recommended 
that units kept clean of salt, since salt will corrode metal over 
time. 
If the unit requires any form of cleaning, use fresh water and a 
mild soap solution (not a detergent). It is important to avoid 
using chemical cleaners and hydrocarbons such as diesel, petrol 
etc. 
Make sure that all open RobNet connectors are fitted with a 
protection cap at all times. 
It is advisable at the start of each season to check all connections 
to the control unit head and to cover them with Vaseline or 
WD40 as needed. 
7.2 Junction Unit
No special maintenance is required. However, it is advisable, to 
make a yearly check of all connections and visually inspect the 
inside of the unit. 
7.3 Rudder Feedback
Make a visual inspection at 2 to 3 month intervals and at the 
start of each season. Apply grease to the ball joints when 
required. 
7.4 Compass (RC25/RFC35R)
If the compass is exposed to outdor conditions, make a visual 
inspection at 2 to 3 months intervals and at the start of each 
season. 
7.5 Drive unit
Refer to the drive unit manual for maintenance instructions.
