Electronically controlled electric BLDC coolant pump - Bimmerfest - BMW Forums

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > General BMW Questions

General BMW Questions
Use this forum to ask general question about the BMW ownership and keep up on the latest BMW news. Direct all model specific questions to model specific forums below.

Thread Tools Display Modes
Old 06-05-2019, 02:37 PM
Doug Huffman's Avatar
Doug Huffman Doug Huffman is offline
Nuclear engineer
Location: Washington Island, Wisconsin, thru Death's Door
Join Date: Apr 2015
Posts: 12,973
Mein Auto: CPO2012 X5 35d M57(E70)
Electronically controlled electric BLDC coolant pump

"Electronically Controlled Coolant Pump
Particular care must be taken when performing servicing work to ensure that the pump does not run dry. When the pump is removed, it should be stored filled with coolant. The bearing points of the pump could seize if the pump were not filled with coolant.
This could jeopardize subsequent start-up of the pump thus rendering the entire heat management system inoperative (the pump not starting up could cause serious engine damage). If the pump should ever run dry, the pump wheel should be turned by hand before finally connecting the coolant hoses. The system should then be immediately filled with coolant.
Particular care must be taken during assembly to ensure that the connector is clean and dry and the connections are undamaged." Page 70 - 71


It should be obvious that the Graphitar plain journal bearings of the ECP will corrode in a used pump or a new pump as well. A new pump should be received wet and stored up-right only.
Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.

Last edited by Doug Huffman; 06-05-2019 at 02:42 PM.
Reply With Quote

See More Related BMW Stories

Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > General BMW Questions
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -7. The time now is 06:51 PM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
© 2001- VerticalScope Inc. All rights reserved.