Diesel Exhaust Fluid Pump - Replace
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| Illustration 1 | g02794241 |
(1) Pump circuit breaker (2) DEF pump (3) Mounting bar thumbscrews | |
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| NOTICE |
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Before servicing the pump, ensure that power to the pump has been disconnected at the circuit breaker inside the dosing cabinet. |
Replace the DEF dosing pump (2) by performing the following steps:
- Remove dosing cabinet access doors .
- Open the pump circuit breaker (1) to disconnect power to the pump.
- Disconnect all connections to the pump.
- Remove thumb screws (3) from the mounting bar. Remove mounting bar.
- Lift the pump and pull out through the access door.
- Remove the feet from the bottom of the old pump by unscrewing four screws. Install the feet on to the bottom of the new pump.
- Remove the heater pad from the old pump and reinstall the pad on to the new pump.
- Ensure that the check valve is in the correct position and o-rings are installed. The arrow on the check valve should be pointing towards flow direction. Flow direction is from the bottom check valve to the top check valve.
- Install the new pump by lowering the pump through the access door.
- Install the mounting bar. Install and tighten thumbscrews.
- Reconnect all electrical connectors.
- Close the pump circuit breaker.
- Install all cabinet access doors.
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