31000-JA800

Supra (JZA80)

Twin Plate Clutch

 

 

Model number

 

 

Required parts for
installation (separate purchase)

 

q       Fly wheel set bolts: 90910-02103 – 8
pieces

 

Enclosed parts

 

	Parts name	Parts number	Quantity	Notes
1	Clutch cover	31210-JA820	1
2	Clutch disk A	31250-JA820	2	Clutch disk A and B are the same
3	Clutch disk B
4	Center Plate	31292-GA800	1	With 3 return springs
5	Fly wheel	13451-JA800	1
6	Bolt A	90110-A0071	3	M6 cap bolt
7	Bolt B	90101-A0104	9	M8 bolt

 

Warning on instillation

 

q       Disassemble the clutch at an authorized
factory

q       Use this product only on the designated
models

q       As soon as receiving this product confirm
that all the parts are included in good condition

q       Before starting installing this product,
make sure that the car is parked in a flat place with side break.

q       Follow the repair instruction of your
model provided by Toyota dealer.

q       Before installing, make sure that the
parts are cold to avoid burns.

q       If you re-use the bolts already used in
the car, make sure they are not rusty

q       Make sure the bolts are securely fastened.

q       Use the designated torque to securely
fasten the bolts

q       Because the bolts tend to get loose
immediately after the installment, make sure to securely fasten them before
driving

q       After the installment make sure this
product does not interfere with other parts. If so consult the sales agent

q       If oil or water did not leak during the
installment.

 

Warning on using this product

 

q       Use this product only on the designated
models

q       This product may be damaged or broken
depending upon storage and driving conditions.

q       Sudden acceleration or sudden turns impose
excessive burden on the product and may damage the product.

q       Strong collision or shock to the vehicle
may deform or break the clutch. 
Immediately inspect the product.

q       If you feel abnormal vibration or noise
while driving, park immediately and inspect the product to avoid serious
accident.

q       Drive at a normal speed for about 500km
immediately after installing this product. 

q       The position of clutch pad may move and
half-clutch operation may feel different, but it is normal.  We recommend to adjust <stroke?> after
test drive.

q       Depending on the usage and conditions,
friction pad significantly wears out. 
Especially driving that requires frequent zero start such as drag race
wears out the friction pad significantly. 
Inspect the clutch frequently.

q       Frequent use of half clutch increases the
temperature of inside of the clutch and inflates or deforms the parts.  If the clutch does not move smoothly, stop
the car and wait until the clutch cools down.

q       You may hear wheel spinning noise, but it
is normal.

 

Installment instruction

 

1. Disassemble twin plate clutch

Loosen
bolt A and B to disassemble twin plate clutch assay

 

2. Install release bearing

Attach
release bearing to the clutch cover. 
Inspect the release bearing and replace if it is a defect.

 

3. Install fly wheel

1)    Attach fly wheel to the crank shaft.  Screw 8 new set bolts in the order as
indicated in the box.  Further tighten
them using the following torque

Torque:
49.0Nm (500kg – cm)

2)    Mark top of the set bolts (see the box)

3)    Tighten the set bolts 90 degrees to the
right

4)    Make sure all bolts have the painted marks
on the right.

 

Warning: fly wheel set bolts cannot be re-used.

 

4. Install the clutch

1)    Attach clutch cover, clutch disk A, B, and
center plate to fly wheel, and loosely screw bolt A and B.  Make sure to match the triangular locks on
the clutch cover, center plate, and fly wheels.

 

Warning:
If the triangular locks are not properly secured, the turning balance may be
lost, causing abnormal noise and vibration.

 

2)    Insert the ??? bar* in the hole of fly
wheel pilot and determine the position for clutch disk A and B.  Dovetail clutch disk A and B.

* An improved SST (number 09301-JA000) will be
released soon.

 

3)    Securely fasten bolt A

4)    Securely fasten bolt B

 

Warning:
If the teeth and center of clutch disks A and B are not securely
attached/aligned, installing T/M will be difficult and may break the disks.

 

Warning:
Screw in each bolt half way then screw in all way.  Then securely tighten them using the
specified torque.

Torque:
Bolt A- 11.8-13.7Nm (120-140kg-cm)

Bolt
B – 27.4-29.5Nm (280-300kg-cm)

 

Warning:
If each bolt is screwed in all way in one time, the cover may be damaged.

 

5)    Pull out the bar.

 

5. Confirm

After
fastening the bolts, confirm that the height of diaphragm springs are
even.  If not, re-do the process 4.

 

6. Install 
   T/M

Apply
designated pure grease on each moving part. 
Follow Toyota repair instruction for details.

 

7. Adjust stroke

Because
the position of clutch pad may move after installing this product, adjust the
pad cloth to the original position.