Raymarine ST4000+ Service Manual

Also see for autopilot ST4000+: Owner's handbook Quick reference Owner's handbook Owner's handbook Service manual

Raymarine ST4000+ Service Manual Manual pdf 21 page image

Chapter 3. Wheel Drive ActuatorST4000+ Autopilots Service Manual 83115-1 17Drive lever and eccentric assemblyRefer to Figure 7. Wheel Drive Actuator exploded view.1. Assemble the drive eccentric assembly (11) and drive wheel assembly(10) to the back mounting plate assembly (2).2. Slide the drive lever (9) onto the drive eccentric assembly (11). Supportthe drive lever (9) and insert the roll pin (8).Note: Always use a new roll pin (8) on refit.Pinion sprocket and belt assemblyRefer to Figure 7. Wheel Drive Actuator exploded view.1. Slot the pinion sprocket (7) over the gearbox drive shaft (21) and pin (19).2. With the drive lever (9) in its slack (declutched) position and theadjustment eccentric assembly (12) is in its lowest position fit the belt (5)around the pinion sprocket (7), drive wheel assembly (10) andadjustment wheel assembly (13).3. Position the support plate (4) with fitted bearing (6) onto the gearboxdrive shaft (21), drive eccentric assembly (11), adjustment eccentricassembly (12) and over the screw pillars. Insert the five screws (3) andsecure the support plate (4).Note: Take care not to cut new threads in the screw pillars when securingthe support plate (4).Drive ring closureRefer to Figure 7. Wheel Drive Actuator exploded view.1. Rest the drive ring (1) over the rollers (18).2. Locate the rollers (18) nearest the gearbox (23) into the groove of thedrive ring (1). Push down and around the drive ring (1) to progressivelysnap the drive ring (1) over the remaining rollers (18).3. Spin the drive ring (1) in both directions, two or three times, too ensurethe assembly is fully seated and free running.