Water Pump Coolant Leak – 2003-2017 Mazda

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 Subject: WATER PUMP COOLANT LEAK Bulletin No: 01-016/16
Last Issued: 08/26/2016

 

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
Normal Water Pump coolant seepage Normal Water Pump coolant seepage

 

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.

mechanical seal (A)

 

Bleed hole (F) is located under water pump Dried coolant steam shows as green-color deposit at bleed hole.
Bleed hole (F) Dried coolant steam shows as green-color deposit at bleed hole

 

Water Pump Samples:

GOOD

No accumulation of crystallized coolant.

DO NOT replace the water pump.

NG

Accumulation of crystallized coolant near the bleed hole (F).

Replace the water pump.

Water Pump Samples Water Pump Samples
Water Pump Samples Water Pump Samples
Water Pump Samples Water Pump Samples

 

REPAIR PROCEDURE

  1. Verify customer concern.

REPAIR PROCEDURE

  1. Verify repair.

01-016-16-3220

01-016/16

https://www.nhtsa.gov/recalls?nhtsaId=10092584

https://static.nhtsa.gov/odi/tsbs/2016/SB-10092584-6903.pdf

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  • OE Reference Numbers: Kia/Hyundai: 00232-19010; Mazda: 0000-77-501E-02; Mitsubishi: MZ311986; Nissan/Infiniti: 999MP-AF000P; Subaru: SOA868V9210; Suzuki: 99951-50000
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Last update on 2024-05-23 / Affiliate links / Images from Amazon Product Advertising API

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