ATTENTION:
GENERAL MANAGER
PARTS MANAGER
CLAIMS PERSONNEL
SERVICE MANAGER

q
q
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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.

SERVICE BULLETIN
APPLICABILITY: 2014MY Forester Turbo

NUMBER: 02-152-14

SUBJECT:
Revised Valve Train Parts to Reduce a Warm Engine
Tapping Sound from the Left Cylinder Head

DATE: 04/22/14

INTRODUCTION
This bulletin announces the availability of revised valve train components developed to reduce a
tapping sound (sometimes described as “a sewing machine type” sound) which may be heard coming
from the left-hand (B2) side of the engine when the engine is warm. This bulletin does not address
any cold engine or start-up sounds. The changes consist of:
•
•
•

Design change to the valve rockers
Camshaft profile change
1.65mm longer intake and 2.45mm longer exhaust valve stem lengths

•

Revised rocker pivots were incorporated at the start of 2014MY production

PART INFORMATION
PART NAME

Part Number
INTAKE VALVE

Change
Identification
Part Number

EXHAUST VALVE

Change
Identification
Part Number

VALVE ROCKER

Change
Identification

INTAKE CAMSHAFT, LEFT

Part Number
Change
Identification

NEW

OLD

13201AA670

13201AA640

Stem Length:
104.95mm
I31
13202AA800
Stem Length:
97.9mm
E3B
13249AA250
Change to Roller
Portion
Circular groove added
on pivot side
13037AA970
Cam Profile Change
38B380

Stem Length:
103.3mm
I22
13202AA740
Stem Length:
95.45mm
E2B
13249AA240
n/a
n/a
13037AA840
n/a
38B240

Continued...
CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles, or
to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how
to do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.

Bulletin Number: 02-152-14; Date: 04/22/14

SUBARU OF AMERICA, INC. IS
“ISO 14001 COMPLIANT”
The international standard for excellence
in Environmental Management Systems.
Please recycle or dispose of automotive
products in a manner that is friendly to our
environment and in accordance with all
local, state and federal laws and regulations.

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NEW

OLD

Part Number

13052AA970

13052AA840

Change

Cam Profile Change

n/a

Identification

53B380

53B240

PART NAME

EXHAUST CAMSHAFT, LEFT

The illustrations below show additional information about the changes to the valve rockers, camshafts
and valves to help readily distinguish them from the previous version parts.

Addition of
groove

Identification
Markings

SERVICE PROCEDURE / INFORMATION
If you receive a customer concern of a tapping sound from the B2 cylinder head, confirm it is isolated
to the B2 valve train area before proceeding with any repairs. Once verified, order and replace the
intake and exhaust camshafts, the 4 intake valves, 4 exhaust valves, and all 8 rockers. Refer to the
service procedures outlined in the applicable Service Manual for installation.
NOTE: When setting the valve clearances, the intakes should be set to 0.13mm +0.02 / - 0.03
and the exhausts set to 0.22mm +/- 0.02. These are revised clearance specifications and are not
reflected in the Service Manual.
IMPORTANT: Do not mix old and new parts together as it will become impossible to obtain intake
valve clearances that are within specification.
TIP: An egg carton makes a perfect organizer tray. Make sure to mark it as necessary (front, intake,
exhaust) to eliminate any mixing of parts.

Continued...
Bulletin Number: 02-152-14; Date: 04/22/14

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WARRANTY / CLAIM INFORMATION
For vehicles within the Basic New Car Limited and/or Powertrain Warranty, this repair may be
claimed using the following information:
LABOR DESCRIPTION

LABOR
OPERATION #

FAIL
CODE

LABOR
TIME

H4 ENGINE R&R FOR CYLINDER HEAD
SERVICING

B293-130

3.8

LH CYLINDER HEAD R&R

C293-122

5.3
AER-48

ALL VALVES REPLACE, ONE CYLINDER
HEAD Includes: Valve Seating, R&R of the
Springs, Valve Seals & Valve Adjustment

C243-001

0.8

VALVE TRAIN NOISE DIAGNOSIS

C243-001

0.3

Bulletin Number: 02-152-14; Date: 04/22/14

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