Pressure Adjust Potentiometer
3A4587B Operation, Repair, Parts
33
Pressure Adjust Potentiometer
Removal
1. Remove two screws (108) and open cover (62a).
2. Disconnect potentiometer (62b) lead from control
board (62e).
3. Loosen set screws on potentiometer knob (62c) and
remove knob, shaft nut, lock washer and
potentiometer (62b).
4. Remove spacer (62g) from potentiometer.
Installation
1. Install spacer (62g) on potentiometer (62b).
2. Install potentiometer, shaft nut, lock washer and
potentiometer knob (62c).
a. Turn potentiometer shaft clockwise to internal
stop. Assemble potentiometer knob (62c) to
strike pin on cover (62a).
b. After adjustment of step a., tighten both set
screws in knob 1/4 to 3/8 turn after contact with
shaft.
3. Connect potentiometer (62b) lead to control board
(62e).
4. Close cover (62a) and secure with two screws (108).
Control Board
Removal
1. Remove two screws (108) and open cover (62a).
2. Disconnect engine and ground wires from wire
harness (66).
3. Disconnect at control board (62e):
• Lead from potentiometer (62b)
• Lead from transducer (155)
• Lead from ON/OFF switch (62d)
• Clutch wires
4.
Remove four screws (62f) and control board (62e).
Installation
1. Install control board (62e) with four screws (62f).
2. Connect at control board (62e):
• Clutch wires
• Lead from ON/OFF switch (62d)
• Lead from transducer (155)
• Lead from potentiometer (62b)
3. Connect engine and ground wires.
4. Close cover (62a) and secure with two screws (108).