Chapter 5. Tiller Drive Actuator Gp; Tiller Drive Actuator Gp Test - Raymarine ST4000+ Service Manual

Chapter 5. Tiller Drive Actuator GP

Chapter 5. Tiller Drive Actuator GP

5.1 Tiller Drive Actuator GP test

Carry out the passive and active tests detailed in Figure 15. Tiller Drive Actuator
GP test flowchart.
Blue
Fuse/CB
Brown
Switch
PSU
12V 15A
Figure 14. Tiller Drive Actuator GP test connections
Start
Visually inspect unit
No
OK
Yes
Extend and retract
thrust arm by hand
No
OK
Yes
Check resistance across
motor connector pins 2 and 3
is approximately 1 to 2 ohms
No
OK
Yes
Figure 15. Tiller Drive Actuator GP test flowchart
12A
Connect power supply
Change damaged
components
check thrust rod moves and
Check gears,
thrust rod,
actuator body,
motor
Change
as necessary
Reverse connections to PSU
Check thrust rod moves
to that of first test and
Check wiring
and connector
No
OK
Yes
Check motor
Change as
necessary
ST4000+ Autopilots Service Manual 83115-1 25
1
2 3
Blue Brown
Actuator deck plug
as in Figure 10.
Switch on,
current less than 2A
Check gears,
No
thrust rod,
OK
actuator body,
motor
Yes
Change
as necessary
Switch off.
Switch on.
in opposite direction
current less than 2A
Check gears,
No thrust rod,
OK
actuator body,
motor
Yes
Change
as necessary
Actuator OK.
End of test
D2398-1
D3731-1