Raymarine 400 Manuale Utente Scaricare il pdf (Pagina 18)

ST4000+ Autopilots

14 ST4000+ Autopilots Service Manual 83115-1

Disassembly

Belt removal

Refer to Figure 7. Wheel Drive Actuator exploded view.

1. Insert a wide flat, non-metalic blade into the gap between the drive ring

(1) and the back mounting plate (2). Gently lever the blade to force the

drive ring (1) off the rollers (18) of the back mounting plate (2). Repeat

this action in three to four places around the drive ring (1) in order to

remove.

2. Unscrew and remove the five screws (3). Detach the support plate (4)

from the back mounting plate (2).

3. Remove the belt (5).

Pinion sprocket removal

Refer to Figure 7. Wheel Drive Actuator exploded view.

1. Perform actions as described in

Belt removal

2. Lift the pinion sprocket (7) off the gearbox drive shaft/gear carrier ‘C’ (21).

Drive lever and eccentric removal

Refer to Figure 7. Wheel drive actuator exploded view.

1. Perform actions as described in

Pinion sprocket removal

2. Place a block with a suitable clearance hole under the drive lever/shaft

(9) to provide support and prevent the shaft bending when the roll pin is

driven out.

3. Drive out the roll pin (8).

4. Pull the drive lever (9) off the drive eccentric shaft (11).

5. Lift the drive eccentric assembly (11) and drive wheel assembly (10) off

the back mounting plate (2).

Motor removal

Refer to Figure 7. Wheel Drive Actuator exploded view.

1. Unscrew and remove the connector nut (36).

2. Remove the sealing cap (35).

3. Grip the gearbox (23), unscrew and remove the sleeve (32) ensuring the

connector does not rotate.

4. Withdraw motor (27)/location peg (26) disengaging it from the gearbox

(23). Slide off the flux ring (25).

Note: Although given separate item numbers, the gearbox (23) is an

integral part of the back mounting plate assembly (2) and the location

peg (26) is part of the motor (27).

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Raymarine 400 Manuale Utente Pagina 18