Pressure Control
Control Board
Removal
WARNING
Read Injection Hazard, page 3; Burn Hazard, page 4
1.Relieve pressure, page 5.
2.FIG. 13. Remove two screws (91) and swing down cover (77)
3.Remove strain relief bushing (24a).
4.Disconnect engine and ground wires.
5.Disconnect at control board (90):
• Lead (D) from potentiometer
•Lead (E) from transducer
•Lead (B) from ON/OFF switch
•Clutch wires
6.Remove four screws (89) and control board (90).
Installation
1.FIG. 13. Install control board (90) with four screws (89).
2.Connect at control board (90):
•Clutch wires
•Lead (B) from ON/OFF switch
•Lead (E) from transducer
•Lead (D) from potentiometer
3.Connect engine and ground wires.
4.Install strain relief bushing (24a).
5.Swing up cover (77) and secure with two screws (91).
Pressure Control Transducer
Removal
WARNING
Read Injection Hazard, page 3; Burn Hazard, page 4
1.Relieve pressure, page 5.
2.FIG. 13. Remove two screws (91) and swing down cover (77)
3.Disconnect lead (E) from control board (90).
4.Pull transducer connector through rubber grommet (78).
5.Remove pressure control transducer (20) and o-ring (63) from filter housing (30).
Pressure Adjust Potentiometer
Removal
WARNING
Read Injection Hazard, page 3; Burn Hazard, page 4
1.Relieve pressure, page 5.
2.Fig. 13.Remove two screws (91) and swing down cover (77).
3.Disconnect lead (D) from control board (90).
4.Loosen set screws on potentiometer knob (68) and remove knob, shaft nut, lock washer and potentiometer (70).
5.Remove seal (69) from potentiometer.
Installation
1.Install seal (69) on potentiometer (70).
2.FIG. 13. Install potentiometer, shaft nut, lock washer and potentiometer knob (68).
a.Turn potentiometer shaft clockwise to internal stop. Assemble potentiometer knob (68) to strike pin on cover (77).
b.After adjustment of step a., tighten both set screws in knob 1/4 to 3/8 turn after contact with shaft.
3.Connect lead (D) to control board (90).
4.Swing up cover (77) and secure with two screws (91).
310813 Rev C | 13 |