Routine Maintenance
© 2021 EMP Inc.
16
Routine Maintenance
Frequency
Action
When checking/filling vehicle
fluids
Ensure fluid levels are correct. Low fluid can cause a pump seal failure.
Every engine oil
change/major vehicle service
interval
Inspect cooling system for leaks. Sample coolant and check to ensure coolant meets
minimum coolant quality requirements. Before removing the pump, reference
Service
Bulletin Electric Water Pump Inspection and Diagnostic Procedures
, EMP document
9910085143.
Every three months or more
often if conditions are harsh
Visually inspect exterior of pump and ensure weep holes are not clogged by debris.
Check wires for wear or frayed insulation. Ensure all electrical connections are tight.
A
Ensure connections are tightened to proper torque rating. Ensure all wires and pin
connections are intact. Inspect support structure for any damage or loose hardware.
+ Inspections should also be conducted after any service to the unit.
Physical Inspection
CAUTION: Do not run the pump without fluid present. If run dry even for a short period the seal will
be damaged.
CAUTION: Pump may start running upon connection of power, ground, and ignition. Do not make
electrical connections until pump and system are filled with fluid.
1. Make sure the weep hole port is not clogged with debris. If the weep holes is plugged then open it up.
Weep Hole Port
!
!