Raymarine ST4000+ Service Manual

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Raymarine ST4000+ Service Manual Manual pdf 20 page image

ST4000+ Autopilots16 ST4000+ Autopilots Service Manual 83115-1AssemblyIn all cases, assembly is a straight reversal of the steps described inDisassembly.Gearbox assemblyRefer to Figure 7. Wheel Drive Actuator exploded view.1. Rebuild gearbox. Refer to Figure 8. Gearbox exploded view2. Fix the gearbox (23) to the back mounting plate assembly (2) using thefour gearbox retaining screws (22).3. Slide the two shims (20) over the gearbox drive shaft/gear carrier ‘C’ (21)and hard up against the back mounting plate assembly (2).4. Support the gearbox drive shaft/gear carrier ‘C’ (21) and refit the pin (19).Note: If the original pin (19) is bent or damaged a replacement pin can beobtained from pinion kit, part no. N014.Motor assemblyRefer to Figure 7. Wheel Drive Actuator exploded view.1. Fit the red motor seal (24) over the threaded end of the gearbox (23).2. Insert the connector wires through the motor clamp (28), and solder theconnector wires to the motor tags – red lead to the tag with a red spot,black lead to the other motor tag.3. Slide flux ring (25) on the motor (27) and fit onto the gearbox (23)ensuring that the motor drive gear is fully engaged with the gear train andthe motor location peg (26) is engaged correctly into the gearbox (23).4. Fit the ‘O’ ring (29) onto the motor clamp (28).5. Place the connector seal (31) over the connector (30).6. Screw the sleeve (32) with fitted ‘O’ ring (33) and end cap (34) onto thegearbox (23).7. Place the sealing cap (35) over the connector (36) and secure with theconnector nut (37).Adjustment eccentric assemblyRefer to Figure 7. Wheel Drive Actuator exploded view.1. Assemble the adjustment wheel assembly (13), adjustment eccentricassembly (12), adjustment lock nut (14) with its chamfered edge facingoutwards, and protection cap (15) to the back mounting plate assembly (2).Note: Ensure that the drive lever (9) is in the slack (declutched) positionand the adjustment eccentric assembly (12) is in its lowest position, sothat the belt (5) is at its slackest.