Service
Servicing the Pressure Sensor (Model 24H989 only)
1.Follow Before Servicing, page 4.
2.Disconnect the pressure sensor (620) from the pressure sensor wire harness (620b). FIG. 5.
3.Unscrew the pressure sensor (620) from the pres- sure sensor fitting (626).
4.Install a new
5.Reassemble in the reverse order.
Servicing the Pressure Sensor Wire Harness (Model 24H989 only)
1.Follow Before Servicing, page 4.
2.Disconnect the pressure sensor (620) from the pressure sensor wire harness (620b). FIG. 5.
3.Remove the four screws (605) holding the air plate
(607)to the housing (611). Unscrew the nut from the pressure sensor wire harness connector (620b).
4.Carefully lift the plate (607) off the housing. Discon- nect the wire harness from J4 on the circuit board
(618)and remove the wire harness. FIG. 6.
5.Install the new wire harness (620b) in the reverse order.
6.Reattach the air plate (607) to the housing (611). Torque the screws (605) to
Servicing the Flow Control Board (all Models)
1.Follow Before Servicing, page 4.
2.Remove the four screws (605) holding the bracket (614) to the housing (611). FIG. 4 or FIG. 5.
3.Carefully separate the bracket from the housing and disconnect the three cables from J1, J2, and J4 on the circuit board (618). FIG. 6.
4.Remove the screws (621). Replace the old board with the new board. Install the screws (621).
5.Reconnect the three cables to J1, J2, and J4 on the circuit board (618). FIG. 6.
6.Reattach the bracket (614) to the housing (611). Torque the screws (605) to
Servicing the V/P Valve (all Models)
1.Follow Before Servicing, page 4.
2.Remove the four screws (605) holding the bracket (614) to the housing (611). FIG. 4 or FIG. 5.
3.Carefully separate the bracket from the housing and disconnect the V/P valve cable from J2 on the circuit board (618). FIG. 6.
4.Remove the two screws (619a) and
5.Reconnect the V/P valve cable to J2 on the circuit board (618). FIG. 6.
6.Reattach the bracket (614) to the housing (611). Torque the screws (605) to
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