Raymarine ST6000 Service Manual page 214

Autohelm Autohelm
Autohelm Autohelm
- Position the support plate sub-assembly on clutch shaft and ensure Idler shaft and
support plate pillars engage correctly, the support plate must be held square during
assembly to prevent damage to the clutch shaft.
- Fully tighten the 4 off screws complete with washers to secure support plate.
- Assemble rear dust cover to master plate sub-assembly and fully tighten the 2 off
securing screws.
3. Functional Test
It is important to check the clutch operation to make sure it will disengage even under
load. Failure of the clutch to disengage is probably
tooth in which case the drive unit must be replaced.
The spur reduction gearbox is noisy compared to the epicyclic gearboxes on other
drive units. This is normal. The no load motor running current with the clutch engaged
should be less than 1.5A.
The clutch current at 10V should be between 0.7 and 10A. Connect the drive unit to
an ST7000 system and switch on power. Set rudder gain to maximum.
- Press 'Auto'
- Press '+10' 7 times to drive the unit fully out.
- Check that clutch holds on end stops without any ratcheting.
- Press 'Standby'
- Check that clutch disengages.
- Press 'Auto'
- Press -10 7 times to drive unit fully in.
- Check that clutch holds.
- Press 'Standby'
- Check that clutch disengages.
6 SeaTalk Service Manual
\ due to a damaged clutch