S-TT-0080-14

Tech Tip S-TT-0080-14
Subject
July 19, 2016
Market
Timing Chain Installation Repair Manual Clarification
Service Category
Section
Engine/Hybrid System
Engine Mechanical
USA
Applicability
2013-2016 Scion FR-S
APPLICABLE VEHICLES
2013-2016
FR-S
CONDITION
This document provides some clarification of the timing chain Removal and Installation. Use this
procedure in addition to the Repair Manual.
RECOMMENDATIONS
FR-S FA20 Engine Timing Chain REMOVAL and INSTALLATION
The Timing Chain REMOVAL procedure is AS IMPORTANT as the
Installation procedure!!! The following clarifies both.
Preliminary Tips:
The “Alignment Marks” (Triangles) on the
VVT Controllers are difficult to identify. They
are lightly stamped onto the faceplate of the
controllers. The following photos show
where to find the Alignment Marks on the
Intake and Exhaust controllers. All four
controllers are different and NOT
interchangeable!
Once you identify the controller Triangle
“Alignment Marks”, mark them with a
permanent marker to make them visible.
Expires On
Ver. 2.3 01/01/2014 S
01/19/2017
© 2014, Toyota Motor Sales, USA
Page 1 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
The Crankshaft Gear “Alignment Mark” is the gear tooth just to the right of the Keyway slot (when looking at
the face of the gear). The Keyway aligns with a recess and the Alignment Mark aligns with the tooth next to
the recess. In the following photos, the Crank Gear Alignment Mark has been highlighted in white for better
visibility.
Follow the Repair Manual procedure! This document contains only highlights of the
RM procedure to eleviate any misinterpretation of the RM illustrations.
FA20 Timing Chain REMOVAL:
Bank 1 is Passenger
Side
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 2 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
Step 2 states “temporarily install the pulley bolt” to be able to turn the crankshaft. To not deform the bolt, a better
practice is to use the Oil Pump Drive and Crank Pulley to turn the Crankshaft.
When preparing to remove Bank 1 Timing Chain, rotate the Crankshaft Clockwise so that the Crankshaft
Keyway is pointing straight down and the triangle alignment marks on the intake and exhaust controllers are
pointing at each other ON BOTH BANKS (see the photo below the illustration).
Remove the Bank 1 Timing Chain guide tensioner and guides, and remove the Bank 1 Chain.
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 3 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
VERY IMPORTANT: DO NOT REMOVE THE BANK 2 GUIDES AND CHAIN YET! THE BANK 2 VALVES AND
CAMSHAFTS ARE UNDER TENSION FROM THE VALVE SPRINGS IN THE CURRENT POSITION. REMOVING THE
BANK 2 CHAIN AT THIS TIME WILL CAUSE THE BANK 2 CAMSHAFTS TO JUMP TO AN UNDESIREABLE POSITION!
Before removing the Bank 2 Chain, the Crankshaft has to be rotated to move the Bank 2
Camshafts to their UNLOADED positions.
Rotate the Crankshaft clockwise so that the Crankshaft Keyway is pointing up and away from Bank 2 and the
Triangle Alignment Marks on the Bank 2 Controllers are as follows:
The Intake controller Triangle Alignment Mark will be facing toward the core plug on the Bank 2 Head.
The Exhaust controller Triangle Mark will face 180O opposite of the Intake controller Triangle Mark.
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 4 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
Remove the Bank 2 Timing Chain guide tensioner and guides, and remove the Bank 2 Chain.
Note:
When the Camshafts are in their UNLOADED positions, Bank 1 Intake and Exhaust Camshafts should rotate
freely approximately 100O.
Bank 2 Exhaust Camshaft should also rotate freely, but Bank 2 Intake Camshaft will NOT rotate freely. The
valves are unloaded but the Camshaft is locked in place!
Timing Chain Removal is complete.
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 5 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
FA20 Timing Chain INSTALLATION:
Timing Chain installation is essentially the reverse order of removal. However there are some
tips to ease installation:
VVT Controller Timing Marks: On the side of the controllers are grooves that the pink links on the Timing Chain
will align with. It is recommended to highlight the grooves with a permanent marker for better visibility and
identification.
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 6 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
Ensure the Triangle Alignment Marks on the Bank 2 controllers are facing the proper directions:
Set the Crankshaft so the Keyway is pointing up and away from Bank 2.
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 7 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
Hang the Bank 2 Chain so the BLUE link aligns with the Alignment Mark on the Crank Gear and the PINK links
align with the Timing Marks on the side of the controllers as illustrated below:
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 8 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
Install the Bank 2 Timing Chain guides and Guide Tensioner as per the RM.
NOTE: In order to hang the Bank 1 Chain, the Crankshaft has to be rotated so that the Crankshaft Keyway faces
straight down and the Triangle Alignment Marks on the Bank 2 controllers point at each other.
The Repair Manual states to rotate the Crankshaft clockwise and check for any binding before installing Bank 1
Chain:
When rotating the crankshaft clockwise, in order to get the Keyway facing down and the Bank 2 controller
Alignment Marks to face each other, the crankshaft has to be rotated more than one revolution, and the
colored links on the Timing Chain will no longer be in alignment with the Timing Marks on the controllers and
Crank Gear.
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 9 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
TIP:
After installing the Bank 2 Chain, if the crankshaft is rotated Counterclockwise approximately
135O so that the Keyway is facing straight down, the Triangle Alignment Marks on the Bank 2
controllers will be facing each other and the colored links on the Timing Chain will still be in
alignment with the Timing Marks on the controllers and Crank Gear.
The engine is now positioned for the Bank 1 Timing Chain to be installed. And after Bank 1
Timing Chain installation, ALL the links on both Timing Chains can be checked to ensure that
ALL the links align with their Timing Marks (before installing the Timing Cover). At that point
rotate the Crankshaft Clockwise to confirm there are no abnormal conditions.
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 10 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
Align the Bank 1 controllers so the Triangle Alignment Marks point at each other as shown in the illustration
below:
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 11 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
Hang the Bank 1 Chain so the BLUE link aligns with the Alignment Mark on the Crank Gear and the PINK links
align with the Timing Marks on the side of the controllers as illustrated below:
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 12 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
Install the Bank 1 Timing Chain guides and Guide Tensioner as per the RM.
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 13 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
RECOMMENDATIONS
RECHECK ALL TIMING MARKS ARE CORRECT:
And NOW rotate the Crankshaft Clockwise to confirm there are no abnormal conditions.
Timing Chain Installation is Complete
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 14 of 15
Tech Tip S-TT-0080-14
July 19, 2016
Subject
Market
Timing Chain Installation Repair Manual Clarification
USA
Applicability
2013-2016 Scion FR-S
LINK REFERENCES
1.
2.
3.
FA20 ENGINE MECHANICAL: TIMING CHAIN: REMOVAL; 2013 MY FR-S [03/2012 ???????]
FA20 ENGINE MECHANICAL: TIMING CHAIN: INSTALLATION; 2013 MY FR-S [03/2012 ???????]
FA20 ENGINE MECHANICAL: ENGINE: ON-VEHICLE INSPECTION; 2014 MY FR-S [07/2013
- ???????]
Expires on
Ver. 2.3 01/01/2014 S
01/19/2017
Rev2
© 2014, Toyota Motor Sales, USA
Page 15 of 15