Inspection
Areas

-

-

-

-

2*,4*,7

NOTE*: See detailed information for AREA 2 and AREA 4.
AREA SECTION LOCATION OVERVIEW:

Continued...
Bulletin Number: 02-192-24; Date: 09/26/24

Page 3 of 10

AREA 1: Right Front Side
Identify which of the following items has adhesion of engine oil from 1, 2 or 3. Depending on the
place of oil adhesion confirmed, reseal the mating surfaces as instructed below.
1. Timing Chain Cover – Cylinder Head – Cylinder Block Seal Surfaces: Reseal the mating
surfaces between the Timing Chain Cover, Cylinder Head and the Cylinder Block.

2. Timing Chain Cover – Cam Carrier – Cylinder Head Seal Surfaces: Reseal the mating
surfaces between the Timing Chain cover, Cam Carrier, and the Cylinder Head.

3. Timing Chain Cover – Cam Cap – Cam Carrier Seal Surfaces: Reseal the mating surfaces
between the Timing Chain Cover, Cam Cap, and the Cam Carrier.

Continued...
Bulletin Number: 02-192-24; Date: 09/26/24

Page 4 of 10

AREA 2: Right Rear Side
Identify which of the following items has adhesion of engine oil from 1, 2 or 3. Depending on
the place of oil adhesion confirmed, reseal the mating surfaces as instructed below. If the target
inspection area was indicated with a (*) in the VIN Break Table, proceed to 3 because 1 and 2 will
not apply.
1. Cam Cap – Cam Carrier Sealing Surfaces: Reseal the mating surfaces between the Cam Cap
and the Cam Carrier.

2. Cam Carrier – Cylinder Head: Reseal the mating surfaces between the Cam Carrier and the
Cylinder Head.

3. Vacuum Pump or Cylinder Head Plate (BRZ ONLY): Reseal the mating surfaces between
the Vacuum Pump, Cylinder Head Plate, and the Right Rear Intake Cam Cap.

Continued...
Bulletin Number: 02-192-24; Date: 09/26/24

Page 5 of 10

AREA 3: Left Front Side
Identify which of the following items has adhesion of engine oil from 1, 2 or 3. Depending on the
place of oil adhesion confirmed, reseal the mating surfaces as instructed below.
1. Chain Cover – Cylinder Head _ Cylinder Block Seal Surfaces: Reseal the mating surfaces
between the Cain Cover, Cylinder Head, and the Cylinder Block.

2. Chain Cover – Cam Carrier – Cylinder Head Seal Surfaces: Reseal the mating surfaces
between the Chain Cover, Cam Carrier, and the Cylinder Head.

3. Chain Cover – Cam Cap – Cam Carrier Seal Surfaces: Reseal the mating surfaces between
the Chain Cover, Cam Cap, and the Cam Carrier.

Continued...
Bulletin Number: 02-192-24; Date: 09/26/24

Page 6 of 10

AREA 4: Left Rear Side
Identify which of the following items has adhesion of engine oil from 1, 2 or 3. Depending on
the place of oil adhesion confirmed, reseal the mating surfaces as instructed below. If the target
inspection area was indicated with a (*) in the VIN Break Table, proceed to 3 because 1 and 2 will
not apply.
1. Cam Cap – Cam Carrier Sealing Surface: Reseal the Cam Cap to the Cam Carrier.

2. Cam Carrier – Cylinder Head Sealing Surface: Reseal the Cam Carrier to the Cylinder
Head.

3. Front M6 Bolt: Remove the indicated bolt and reinstall with Three Bond applied to the bolt
head mating surface.

Continued...
Bulletin Number: 02-192-24; Date: 09/26/24

Page 7 of 10

AREA 5: Oil Pan / Upper Oil Pan
1. Oil Pan / Upper Oil Pan: Reseal the mating surfaces between the Oil Pan and the Upper Oil
Pan.

AREA 6: Engine / Transmission Mounting Area
1. Engine / Transmission Mounting Area: Reseal the mating surfaces between the Upper Oil
Pan and the Engine Block.

Continued...
Bulletin Number: 02-192-24; Date: 09/26/24

Page 8 of 10

AREA 7: Oil Level Switch Area
1. Oil Level Switch Area: Inspect for oil leakage in the following areas.
•

Oil Pan

•

Upper Oil Pan

•

Lower Section of the Engine Block

•

Lower Section of the Cylinder Head

•

Engine / Transmission Mounting Surfaces

SPECIAL TOOLS:
When removing and installing the timing chain cover it is important to using the Subaru special tools
J-51972 & J53038. Using these tools will help reduce the possibility of damaging the chain cover
during removal while also ensuring better Three Bond sealing during installation.

14-26-20

Continued...
Bulletin Number: 02-192-24; Date: 09/26/24

Page 9 of 10

These essential tools have been shipped to all Subaru retailers. Additional quantities can be ordered
through the Service Tools & Equipment page on Subarunet: Subarunet > Service Operations &
Technical > Service Tools & Equipment > Subaru Essential & Special Tools or go directly to: https://
www.subaruretailersolutions.com/
ADDITIONAL MATERIALS:

•

Spotcheck SKD-S2 can be used to aid in the oil leakage inspection process.
SKD-S2 is a fast drying solvent that provides a white opaque coating when
applied. This gives a contrasting background for the inspection area.

•

Use of aerosol Subaru Silicone Gasket Remover
(p.n. SOA868V9175) along with WHITE plastic
razor blades and / or a sharpened plastic trim removal
stick to use as a non-marring scraper make sealer
removal easier. Applying the Gasket Remover spray
and allowing it to “soak” also helps. NEVER use
steel razor blades or abrasive discs as they can easily
damage the machined aluminum sealing surfaces.

WARRANTY / CLAIM INFORMATION:
Refer to the Labor Time Guide for model, repair, and claim specific 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.
Continued...

Bulletin Number: 02-192-24; Date: 09/26/24

Page 10 of 10

APPENDIX A

General Guidelines for FIPG Application

FIPG*1 Application Procedure

Note*1) FIPG = Formed In Place Gasket (Liquid Gasket)

Introduction
This document shows the application procedure when resealing the engine
with FIPG. Please refer to this material to accomplish repair work in case of oil
leakage on FB/FA engine.

【CONTENTS】
1.Sealing mechanism of FIPG

P.3

2.Quality Compliance Items

P.4

3.Application conditions and precautions for each
part
3-1.Points to note when applying FIPG (How to remove
extra liquid gasket after part assembly)

P.5 - 6

3-2.Block, Separator cover, Head gasket

P.7 - 14

3-3.Cam Carriers, Cam Caps

P.10 - 13

3-4.Vacuum Pump, Plate, High Pressure Fuel Pump Case

P.14 -16

3-5.Rocker Cover, Oil Pan UPR, Oil Pan

P.17 - 20

3-6.Chain cover

P.21 - 22

FIPG sealing mechanism
FIPG is extruded from the cartridge, and when it comes into contact
with moisture in the air. The chemical reaction of FIPG with moisture
in the air after it is extruded from the cartridge accelerates its adhesion
to the sealing surface and its rubberization, resulting in sealing performance.
Therefore, if there are any obstacles during the chemical reaction,
it will not be possible to achieve sufficient sealing performance.
【Major inhibitors to sealing performance】
①:Dirt on the seal surface
②:Insufficient FIPG filling volume
③:Long leaving time between application
and component assembly
④:Insufficient time required for curing

Adhesion and Bonding

Stickiness and cohesion

Adhesion and Bonding

Image of FIPG seal function

Quality Compliance Items
●Compliance with the FIPG application process●
Please observe the following to ensure that the sealing
performance is fully demonstrated.
①:Clean and degrease the seal surface thoroughly.
②:Apply FIPG in the proper position and amount.
③:Install the parts within 5 minutes after applying FIPG.
④:After assembly, allow sufficient time for curing
before refilling engine oil.

※Be aware that residual oil inside the engine will drip even after cleaning.
※Approximate curing time after assembly @20°C: FA/FB (2.2H or more)
Note: Required curing time varies depending on the amount of application.

Precautions when applying FIPG (FA/FB)

(How to remove extra liquid gasket after part assembly)
After assembling the surrounding parts, extra FIPG will stick out from the sealing surfaces of the
assembled parts (Chain cover, etc.). Before the FIPG gets hardened, completely remove the extra FIPG
with scraper, etc. to the directions indicated by arrows in the chart below.

Chain cover part

Vacuum pump section
(RH rear side)

Before removal

High-pressure fuel pump case section
(LH upper side)

After removal

Engine Block mating surface
(FA/FB)
If extra FIPG sticks out from the sealing surfaces of the Chain Cover after installation, remove the extra
FIPG completely with scraper, etc. to the directions indicated by arrows in the chart below before
hardening.

(A):Range A (B):Range B (C):Range C
(D):FIPG application position on mating surface in range B
(E):FIPG application position of the mating surface part (other than the tip) of range C
(F):FIPG application position of the mating surface part (tip) of range C
(G):Within 1mm (H):Φ3.2±0.5mm (I):Chamfer edge
(J):Φ4±0.5mm (K):2mm (L):36mm (M):2.5mm

Separator cover (FA/FB)

The photo shows the condition when FIPG is
applied to the separator cover side.

(A):FIPG application position
(B):Within 1mm
(C):Φ4±1mm
(D):Chamfer edge

Head gasket LH (FA/FB)
If extra FIPG sticks out on the sealing surfaces of the Cylinder Head after installation, remove the extra
FIPG completely with scraper, etc. to the directions indicated by arrows in the chart below before
hardening.

(A):FIPG application position on Cylinder head side
(B):FIPG application position on Cylinder block side
(C):Within 1mm
(D):Φ3±1mm
(E):Cylinder head gasket end
(F):Overlap between bead end and FIPG 3 to 10mm

Cylinder block side

Cylinder head side

Head gasket RH (FA/FB)
If extra FIPG sticks out on the sealing surfaces of the Cylinder Head after installation, remove the extra
FIPG completely with scraper, etc. to the directions indicated by arrows in the chart below before
hardening.

(A):FIPG application position on Cylinder head side
(B):FIPG application position on Cylinder block side
(C):Within 1mm
(D):Φ3±1mm
(E):Cylinder head gasket end
(F):Overlap between bead end and FIPG 3 to 10mm

Cylinder head side

Cylinder block side

Cam Carrier RH (FA/FB)
If extra FIPG sticks out on the sealing surfaces of the Cam Carrier after installation,
remove the extra FIPG completely with scraper, etc. to the directions indicated by arrows in
the chart below before hardening.

(A):Range A (B):Φ18mm
(C):FIPG application position of mating areas other than Range A
(D):FIPG application position of mating areas in Range A
(E):Φ4±0.5mm (F):1±1mm (G):0±0.5mm (H):Chamfer edge

Cam Carrier LH (FA/FB)
If extra FIPG sticks out on the sealing surfaces of the Cam Carrier after installation, remove the extra FIPG
completely with scraper, etc. to the directions indicated by arrows in the chart below before hardening.

(A):Range A (B):Φ18mm
(C):FIPG application position of mating areas other than Range A
(D):FIPG application position of mating areas in Range A
(E):Φ4±0.5mm (F):1±1mm (G):0±0.5mm (H):Chamfer edge

Camshaft Cap RH (FA/FB)
If extra FIPG sticks out on the sealing surfaces of the Camshaft Cap
& Vacuum Pump after installation, completely remove the extra
FIPG with scraper, etc. in the directions indicated with arrows in the
chart below before curing.

Remove extra FIPG with scraper,
etc. in the directions indicated by
arrows to avoid interference with
the Vacuum Pump.

Be careful not to apply too
much FIPG, otherwise the
overflowed FIPG will be bitten
by the journal and cause
seizure.

(A):29mm (B):28.5mm (C):Range A
(D):FIPG application position of mating area in Range A
(E):FIPG application position of mating area
other than Range A
(F):1mm (G):Φ3±0.5mm
(H):Chamfer edge (I):Φ2±0.5mm

Camshaft Cap LH (FA/FB)
If extra FIPG sticks out on the sealing surfaces of the Camshaft Cap and High-pressure Fuel Pump Drive
Case after installation, completely remove the extra FIPG with scraper or the like in the directions
indicated with arrows in the chart below before curing.

(A):28.5mm (B):8.5mm (C):5.5mm (D):Range A
(E):FIPG application position of mating area in Range A
(F):FIPG application position of mating area other than range A
(G):1mm (H):Φ3±0.5mm
(I):Chamfer edge (J):Φ2±0.5mm

Be careful not to apply too much
FIPG, otherwise the overflowed
FIPG can be bitten by the journal
and cause seizure.

Vacuum pump ASSY (FA/FB)

(A):Range A (possible starting range of application)
(B):Location of FIPG application on mating surfaces
(C):Φ3±1mm
(D):1mm
(E):Chamfer edge

Plate (FA/FB)

Aim at the chamfer shape
of the plate and apply the
FIPG.

(A):Range A (possible starting range of application)
(B):Location of FIPG application on mating surfaces
(C):Φ3±1mm
(D):1mm
(E):Chamfer edge

High-pressure Fuel Pump drive case ASSY
(FA/FB)

B

B

B-B

(A):Within 1mm
(B):Φ3.5 ±1mm
(C):Chamfer edge
(D):FIPG
(E):Oil passage

Be careful not to apply too much
FIPG as it may block the oil passages.

(D)
(E)

Rocker cover RH (FA/FB)

(A):10.0mm or more (B)74mm or less
(C):71～73mm (D):Starting point of arch
※ Please refer to the service manual of each vehicle system.
(a):Locker cover
(b):Locker cover gasket
(C):Φ3±1mm

Rocker cover LH (FA/FB)

(A):10.0mm or more
(B):17.3mm or less
(C):70.7mm or more
(D):Starting point of arch
※ Please refer to the service manual of each vehicle system.
(a):Locker cover
(b):Locker cover gasket
(C):Φ3±1mm

Oil pan UPR (FA/FB)

(A):0mm or more and less than 2.0mm
(B):Φ4±0.5mm
(C):Chamfer edge
(D):FIPG application position of aligned surface area

Oil pan (FA/FB)

(A):10.5mm or more but less than 13.5mm
(B):Φ4.5 ±0.5mm
(C):FIPG application position of aligned surface area

For convenience of photography, the
bottom of the oil pan has been cut off.

Chain cover Preliminary check
before assembly (FA/FB)
Before assembly the Chain Cover, check if there are any non-flat portions
along the mating surfaces especially at the locations
shown in the figure. If there is a non-flat portion (dent) make the surface
flat by filling with FIPG.

Chain cover (FA/FB)

(A):14.5mm (B):17.5mm (C):Range A (D):316.2mm
(E):24.5mm (F):18.5mm (G):127mm (H):Range B
(I):FIPG application position at the mating area in range A
(J):FIPG application locations on central boss (5 locations)
(K):FIPG application position at the mating area in range B
(L):FIPG application locations on mating surfaces other than Range A and Range B
(M):Φ4±0.5mm (N):2.3mm (O):Φ12mm (P):2.8mm (Q):1mm
※ Refer to the service manual of each vehicle system for values.