01-016-16-3220

Service Bulletin
Mazda North American Operations
Irvine, CA 92618-2922
© 2016 Mazda Motor of America, Inc.
Subject:
Bulletin No:
01-016/16
Last Issued:
08/26/2016
WATER PUMP COOLANT LEAK
MULTI-MODEL - WATER PUMP COOLANT LEAK
BULLETIN NOTE
This bulletin supersedes the previously issued bulletin(s) listed below: The changes are noted in Red beside the
change bars.
Previously issued TSBs:
Date issued:
01-004/09
02/03/2009
APPLICABLE MODEL(S)/VINS
2004-2017 Mazda3
2016-2017 Mazda CX-3
2007-2017 Mazda CX-9
2006-2015 Mazda5
2013-2017 Mazda CX-5
2004-2005 Mazda Miata
2003-2017 Mazda6
2007-2012 Mazda CX-7
2006-2017 Mazda MX-5
DESCRIPTION
There is a concern that some water pumps are being replaced that are not faulty, due to signs of a very small
coolant leak from the bleed hole. This Service Bulletin is to inform you about the water pump sealing mechanism and the criteria if replacement is necessary or not.
Normal Water Pump coolant seepage
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CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.
Bulletin No: 01-016/16
Last Issued: 08/26/2016
© 2016 Mazda Motor of America, Inc.
A mechanical seal (A) is used for the water pump. This mechanical seal can seal coolant (B) by sliding a mating
ring (C) against a seal ring (D). When the sliding surface temperature of the mechanical seal is more than 248
°F (120 °C) while driving, a small amount of steam (E) is leaked and bleeds through the bleeding hole (F). After
drying, the steam leaves a green coolant deposit near the water pump bleed hole (F). This is a normal condition
and does not require water pump replacement. The water pump should only be replaced if there is an accumulation of crystallized coolant near the bleed hole.
Bleed hole (F) is located under water pump
Dried coolant steam shows as green-color deposit at bleed hole.
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Bulletin No: 01-016/16
Last Issued: 08/26/2016
© 2016 Mazda Motor of America, Inc.
Water Pump Samples:
GOOD
NG
No accumulation of crystallized coolant.
Accumulation of crystallized coolant near the bleed
hole (F).
DO NOT replace the water pump.
Replace the water pump.
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Bulletin No: 01-016/16
Last Issued: 08/26/2016
© 2016 Mazda Motor of America, Inc.
REPAIR PROCEDURE
1. Verify customer concern.
2. Verify repair.
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