OPERATION
3-10 / Pierce Pumper
© 2019 Pierce Manufacturing Inc. All Rights Reserved.
Pump Engagement - Ford Engine (continued)
6. Check “Pump Engaged” indicator light.
Indicator light turns ON when the pump shift control is moved from ROAD to PUMP,
and
when the pump shift
actuator has moved.
•
If light is OFF, pump is NOT engaged. Check:
•
Air pressure 80psi (551 kPa) or above
•
Parking Brake Applied
•
Wheels Chocked
Pump may not engage if gear teeth fail to mesh. In this case:
Shift to N → Shift to R → Shift to N → Shift to D
Transmission should shift into pump. Repeat steps as necessary to complete the shift into pump mode.
7. Apply the service brake by pressing and holding the brake pedal.
8. Shift transmission to DRIVE (D).
After PUMP ENGAGED light is ON. A driveline driven pump must have the transmission shifted into DRIVE
for pumping.
NOTE:
Remove foot from brake pedal immediately after D4 displays on the shift pad. If brake is not
released, the transmission will drop out of fourth gear lock-up.
If any pedal is depressed while in fourth gear lock-up, transmission will drop out of gear.
9. Check Shift Pad indicator light for shift indication.
The shift pad will indicate “D4” when the transmission has successfully shifted.
Release foot from service brake immediately after “D4” displays,
10. Check the speedometer.
If the speedometer indicates some value of road speed (approx. 12-18 MPH) AND the vehicle is not moving,
the pump is successfully engaged.
Begin pumping immediately after engaging pump.
Recirculate water if hoses are not ready to keep water cool.
Running pump dry for more than a few minutes will cause pump damage.
11. Check the “OK to Pump” indicator light. The “OK to Pump” light turns on when:
•
Pump shift Control has successfully engaged the pump, AND
•
Transmission has been successfully shifted into DRIVE, AND
•
Transmission torque converter is in the locked mode.
You are now ready to pump water. See
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