Technical
Service Bulletin

Mazda North American Operations
Irvine, CA 92618-2922

Subject:
OIL SEEPAGE AT ENGINE FRONT COVER

Bulletin No.: 01-018/18

Last Issued: 09/21/2018

BULLETIN NOTES
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red.

Previously Issued TSBs:
Date(s) Issued
01-005/17
06/02/17 and 03/03/17

APPLICABLE MODEL(S)/VINS
2014-2017 Mazda3 (Japan built) with VINS lower than JM1BN******100114 (produced before July 4, 2016)
2014-2016 Mazda3 (Mexico built) with VINS lower than 3MZBM******312993 (produced before June 16,
2016)
2013-2016 CX-5 with VINS lower than JM3KE******838638 (produced before July 4, 2016)
2014-2017 Mazda6 with VINS lower than JM1GL******100801 (produced before July 4, 2016)

Page 1 of 9
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-018/18

Last Issued: 09/21/2018

DESCRIPTION
Some vehicles may exhibit oil residue on the engine front cover from seepage around the joint portion (A)
between the cylinder block and head. It becomes very noticable with dust adhesion. In some cases, the
area of oil residue extends down to around the joint portion (B) between the engine front cover and the oil
pan.

This may be caused by oil escaping from a fine clearance created at the sealant applied to joint (A)
between the cylinder block (B) and head (C) when the engine was pressurized during leak testing on the
engine assembly line.

Page 2 of 9
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-018/18

Last Issued: 09/21/2018

REPAIR PROCEDURE
1. Verify the customer concern.
2. Remove the engine front cover according to MGSS online instructions “TIMING CHAIN
REMOVAL/INSTALLATION”.
3. Completely clean and remove oil, dirt, sealant or any other foreign matter that may be adhering to the
engine front cover, cylinder head, and cylinder block.
CAUTION: If any oil, dirt or sealant remains on the sealant application area, the silicone sealant will not
seal and oil leakage will occur.
4. When reusing the engine front cover installation bolts, remove any sealant adhering to the bolts.

CAUTION: If a bolt with sealant adhering to it is used, it could cause cracks in the cylinder head and
cylinder block.

Page 3 of 9
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-018/18

Last Issued: 09/21/2018

5. Apply silicone sealant (TB1217D or equivalent) to the engine front cover as shown.
CAUTION:




Apply the silicon sealant in a single, unbroken line.
To prevent silicone sealant from hardening, adhere the engine front cover to the cylinder block
firmly within 10 minutes after applying silicone sealant. After adhering the engine front cover,
tighten the installation bolts immediately.

Bead Thickness





A: 2—6 mm {0.1—0.2 in}
B: 4—6 mm {0.16—0.23 in}
C: 4—8 mm {0.2—0.3 in}

Page 4 of 9
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-018/18

Last Issued: 09/21/2018

6. Apply silicone sealant (TB1217D or equivalent) to the areas shown.
CAUTION: Apply the silicone sealant to the area (A) between the cylinder block (B) and head (C) so that it
goes into the cylinder head gasket (D).

7. Install the engine front cover to the engine.
NOTE: Temporarily install an appropriate bolt to the drive belt auto tensioner installation bolt hole (A) to
prevent:




A silicone sealant adhesion malfunction in the drive belt auto tensioner installation bolt hole.
A bolt mis-installation due to silicone sealant hardening.

8. Prepare an appropriate M8 × 1.25 bolt (length 40 mm {1.6 in}).
CAUTION: For the number 10 bolt of the tightening order, install the bolt with new washer.

Page 5 of 9
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-018/18

Last Issued: 09/21/2018

9. Tighten the engine front cover installation bolts in the order shown.

Tightening torque:20—26 N•m {2.1—2.6 kgf•m, 15—19 ft•lbf}
10. Remove the bolt installed to the drive belt auto tensioner installation bolt hole when installing the drive
belt auto tensioner.
11. Install other removed parts according to MGSS online instructions “TIMING CHAIN
REMOVAL/INSTALLATION”.
12. Verify repair.

Page 6 of 9
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-018/18

Last Issued: 09/21/2018

PARTS INFORMATION
Parts Number

Description

Qty.

Notes

PE01-12-257

O-Ring, VVT Motor (A)

1

ZJ01-10-243

Sealing Washer (B)

1

PE01-10-235

Gasket, Head Cover (C)

1

2.0L

PE7W-10-235

Gasket, Head Cover (C)

1

2.0L (for some Mexico built models)

PY01-10-235

Gasket, Head Cover (C)

1

2.5L

PE01-10-602

Front Oil Seal (D)

1

0000-77-1217-ES

Silicone

1

0000-G5-0W20-MQ

Engine Oil (0W-20)

2

2 quarts max (for topping off)

Page 7 of 9
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-018/18

Last Issued: 09/21/2018

PARTS LOCATION

Page 8 of 9
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.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 01-018/18

Last Issued: 09/21/2018

Removal Order

1. Dipstick

7. Crankshaft pulley

2. Cylinder head cover

8. Front oil seal

3. Oil shower pipe

9. No. 3 engine mount

4. Drive belt auto tensioner 10. Electric variable valve timing motor/driver
5. Water pump pulley

11. Engine front cover

6. Crankshaft pulley lock bolt

WARRANTY INFORMATION
NOTE:





This warranty information applies only to verified customer complaints on vehicles eligible for
warranty repair.
This repair will be covered under Mazda’s Powertrain Limited Warranty term.
Additional diagnostic time cannot be claimed for this repair.

Warranty Type

A

Symptom Code

76

Damage Code

9A
PE01-10-500A, Engine Front Cover
(2.0L)
PY01-10-500A, Engine Front Cover
(2.5L)

Part Number Main Cause

Quantity

0

Operation Number / Labor Hours:

XXN1CARX / 3.3 Hrs. (SKYACTIV-G
2.0L)
XXN1CARX / 3.4 Hrs. (SKYACTIV-G
2.5L)

NOTE: Enter the replaced non-usable parts in Related Parts.

Page 9 of 9
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.

© 2018 Mazda North American Operations, U.S.A.