02-188-21

ATTENTION:
GENERAL MANAGER
q
PARTS MANAGER
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CLAIMS PERSONNEL
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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.
SERVICE MANAGER
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© 2021 Subaru of America, Inc. All rights reserved.
SERVICE BULLETIN
APPLICABILITY:
		
		
		
		
		
SUBJECT:
2020-22MY Legacy / Outback		
2012-22MY Impreza
2012-22MY Crosstrek
2011-22MY Forester
2013-21MY BRZ
2019-21MY Ascent
NUMBER: 02-188-21
DATE:
10/07/21
Timing Chain / Camshaft Sprocket Installation-Procedure Information
INTRODUCTION:
This Service Information Bulletin announces an additional service procedure for timing chain and / or
cam sprocket replacement on FA and FB type engines. This information addresses the rare situation
in which the lock pin inside the cam sprocket not being in the “lock” position when the engine was
shut off prior to servicing. This condition can occur under normal engine operation.
SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
1) Sprocket Components / Descriptions of Markings:
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.
Subaru of America, Inc. is
ISO 14001 Compliant
ISO 14001 is 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.
Continued...
Bulletin Number: 02-188-21; Date: 10/07/21
Page 1 of 6
2) Work Outline:
Prior to performing service work to the
timing chain and/or the cam sprocket,
confirm if alignment mark on the sensor
plate is aligned and/or rotating free from
the sprocket.
Can the sensor
plate be rotated
free from the cam
sprocket?
NO
It may be a separate issue from the
condition outlined in this Service
Bulletin (mechanical seizure, etc.).
YES
Refer to the work procedures
according to the applicable Subaru
Service Manual.
YES
Is the
camshaft
sprocket
assembly being
replaced with a
new one?
NO
Refer to the work procedure in Section 3.
3) Work Procedure:
When setting the timing on an engine that has the sensor plate moving free of the camshaft
sprocket housing, use the following procedure below in conjunction with the information
provided in the applicable service manual. This symptom does not affect the engine operation next
time the cam mechanism is hydraulically activated. The following work prodedure is to used for
EXAMPLE purposes. In this example, a sensor plate is found to be “free moving” from the left
intake cam sprocket housing on a FA20 type engine.
Refer to the applicable Service Manual: Engine > Timing Chain Assembly
Continued...
Bulletin Number: 02-188-21; Date: 10/07/21
Page 2 of 6
EXAMPLE: (FA20 Left Intake Cam Sprocket)
In this case, the Housing and Sensor
Plate are moving free of each other.
The Alignment Marks on the “free
moving” Sensor Plate DO NOT need
alignment since the plate is not
locked to the housing at this time.
Continued...
Bulletin Number: 02-188-21; Date: 10/07/21
Page 3 of 6
The Timing Marks located on the Housing
MUST be aligned with the colored chain
markings and Crank Sprocket Timing
Marks as shown.
END OF EXAMPLE
Continued...
Bulletin Number: 02-188-21; Date: 10/07/21
Page 4 of 6
Required Tools:
18252AA000
CRANKSHAFT SOCKET
J-53038
CASE COVER TOOL KIT
J-51972
CAM COVER ALIGNMENT PINS
IMPORTANT NOTES:
•
Refer to the applicable Service Manual and review: General Description > Repair Contents
> Action required before & after Battery Disconnect. Additionally, record any stored seat
position(s) before proceeding. Relearn any seat position memory after work is complete. If
the power rear gate (PRG) height has been customized, that position must also be noted and
relearned.
•
Whenever reconnecting the ground cable terminal to the battery sensor, torque to 7.5Nm (5.5ft.lbs. or 66inch-lbs.) while supporting the sensor with the other hand as outlined in the applicable
Service Manual under: STARTING/CHARGING SYSTSEMS > Battery Sensor.
Continued...
Bulletin Number: 02-188-21; Date: 10/07/21
Page 5 of 6
WARRANTY / CLAIM INFORMATION:
There have been no changes to the labor time for this procedure. Refer to the applicable Labor Time
Guide for claim information.
IMPORTANT REMINDERS:
•
SOA strongly discourages the printing and/or local storage of service information as previously
released information and electronic publications may be updated at any time.
•
Always check for any open recalls or campaigns anytime a vehicle is in for servicing.
•
Always refer to STIS for the latest service information before performing any repairs.
Bulletin Number: 02-188-21; Date: 10/07/21
Page 6 of 6