Pressure Control Replacement
WARNING
INJECTION HAZARD
To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 10.
1.Relieve pressure.
2.Disconnect both hoses at the pressure control while holding the fitting or elbow (A) firmly. See the CAUTION, below. Note the original location of each hose to be sure you reassemble them cor- rectly at the end of this procedure. See Fig. 21.
CAUTION
Do not allow the elbow (A) to turn when removing or connecting the hoses. Turning the fitting or elbow can shift the calibration of the pressure control.
76 | 63 | A | TO |
|
| FIL- | |
|
|
|
TER
A
2 | 1 |
|
1To the pump.
2To the filter.
06873
Fig. 21
310
317
C
B
3. | Remove the four mounting screws and washers |
| (302, 303, 304) from the pressure control cover |
| (76). See Fig. 22. |
4. | Carefully remove the pressure control cover (76) |
| so as not to stress the cables. |
76
304
302
314
5. Disconnect the black and white wires of the pres- |
sure control cable (314) from the pressure control |
cover. |
304
303
Fig. 22
06872A
6. | Disconnect the potentiometer cable assembly |
| (310) from the pressure control cover. |
7. | Disconnect the red power lead (B) from the ON/ |
| OFF switch. |
8. | Loosen the ground terminal screw (317) and |
| disconnect the ground lead (C). |
9. | Pull off the pressure control cover. |
WARNING
Do not attempt to adjust or calibrate the pressure control. If the pressure control is faulty, replace it.
10.Reassemble in the reverse order; attach ground wire (C), power lead (B), and the black and white connectors. Attach the pressure control cover (76) using the four mounting screws and washers (302, 303, 304).
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