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Pressure
Control
WARNING
To reduce the risk of serious injury, follow the
NOTE: See Fig. 30 for this procedure.
or adjusted. If it has malfunctioned, replace it.
NOTE: The pressure control (64) cannot be repaired
1.
Remove thefront cover (13). Remove the screws
(56).
Lower the junction box (59).
2. Disconnect the harness connector (A) from the
motor start board (47).
3.
Remove the screws (63). Pull fotward on the pres-
sure adjusting knob and tip the pressure control
(64) fotward and up to detach it from the drive
housing (1 1).
4. Guide the harness (A) through the motor and
drive housing and remove the pressure control.
5.
Guide the harness
o f
the new pressure control
through the drive housing and motor passages.
6.
Install the new pressure control. Tip the pressure
control down and back into the drive housing
(1 1). Do
not pinch or damage the harness (A).
7. Loosely install the screws (63) and then torque
them to 21 in-lb (2.4 Nm).
8.
Install the front cover (13). Connect the harness
(A) to the motor start board
(47).
9. Install the junction box. Be sure no leads are
board.
pinched against the motor or by the motor start
Pressure Transducer
WARNING
To reduce the risk of serious injury, follow the
Pressure Relief Procedure on page 11 before
NOTE: See Fig. 31 for this procedure.
1. Remove the displacement pump. See page 22.
2. Use a pull-twist motion to remove the transducer
(29) from the pump manifold (101).
do not scratch the surface of the hole.
3.
Clean paint residue from the hole in the manifold;
4. Lightly apply oil to the O-ring of the new transducer.
5.
Install the transducer in the pump manifold, while
guiding the O-ring and backup ring into place.
6.
Align the holes in the transducer as shown by the
arrows in Fig. 31.
7. Install the displacement pump. See page
22.
30
308-216
Fig.
31
29
101
02817A
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