Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000028IY0
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: FRONT SUSPENSION: FRONT SHOCK ABSORBER (for G16E-GTS): INSTALLATION; 2023 - 2025 MY GR Corolla [11/2022 -        ]

INSTALLATION

CAUTION / NOTICE / HINT

HINT:

  • Use the same procedure for the RH side and LH side.
  • The following procedure is for the LH side.

PROCEDURE

1. INSTALL FRONT LOWER COIL SPRING INSULATOR (w/ Rear Seat Assembly)

(a) Install the front lower coil spring insulator to the front shock absorber assembly.

Positioning Pin

NOTICE:

When installing the front lower coil spring insulator, insert the positioning pin of the spring seat into the hole of the front lower coil spring insulator.

2. INSTALL FRONT LOWER COIL SPRING INSULATOR (w/o Rear Seat Assembly)

(a) Install the front lower coil spring insulator to the front shock absorber assembly.

Positioning Pin

NOTICE:

When installing the front lower coil spring insulator, insert the positioning pin of the spring seat into the hole of the front lower coil spring insulator.

3. INSTALL FRONT SPRING BUMPER (w/ Rear Seat Assembly)

(a) Install the front spring bumper to the front shock absorber assembly.

Install in this direction

NOTICE:

  • Face the smaller diameter end of the front spring bumper downward.
  • Do not apply lubricants to the front spring bumper.
  • Do not apply lubricants to the front shock absorber assembly cap or rod.
  • Do not clean the front spring bumper with water or solvent.

4. INSTALL FRONT COIL SPRING

(a) Secure SST in a vise.

SST: 09727-00051

SST: 09727-30022

09727-00010

09727-00031

SST: 09727-00040

*a

SST(09727-00051)

*b

SST(09727-00040)

*c

SST(09727-30022 (09727-00010, 09727-00031))

(b) Attach the hooks of each SST arm across the diameter of the coil spring.

CAUTION:

  • Make sure that the hooks are securely attached to the coil spring.
  • If a hook disengages from the coil spring, the coil spring may fly out, resulting in injury.
  • Make sure that the hooks of the upper and lower SST arms are attached to the coil spring so that the distance between the hooks is as large as possible.
  • If a hook disengages from the coil spring, the coil spring may fly out, resulting in injury.
  • Make sure that the arms of SST are parallel and the number of coils between the arms is the same on each side.
  • If a hook disengages from the coil spring, the coil spring may fly out, resulting in injury.

(c) Install the stopper pins to the hooks of SST.

CAUTION:

  • Make sure that the stopper pins are installed securely.
  • If a hook disengages from the coil spring, the coil spring may fly out, resulting in injury.

(d) Install SST as shown in the illustration.

CAUTION:

The pin is not attached to one side, so be sure to hang the belt.

SST: 09727-00110

(e) Using SST, compress the coil spring.

CAUTION:

  • If the coil spring starts to bow out while using SST, stop immediately and reattach SST correctly.
  • If a hook disengages from the coil spring, the coil spring may fly out, resulting in injury.
  • Do not compress the coil spring to the point where the coils touch each other.
  • If a hook disengages from the coil spring, the coil spring may fly out, resulting in injury.
  • Do not use an impact wrench.
  • If an impact wrench is used, the threads of SST may be damaged, or sudden compression of the coil spring may cause a hook to disengage and the coil spring to fly out, resulting in injury.
  • If a stopper pin touches the coil spring while using SST, remove the stopper pin and continue with the procedure.
  • If a hook disengages from the coil spring, the coil spring may fly out, resulting in injury.

(f) Align the end of the front coil spring with the flange of the front lower coil spring insulator and install the front coil spring.

NOTICE:

Make sure to fit the end of the front coil spring that has the larger diameter into the depression of the front lower coil spring insulator.

*a

Depression

5. INSTALL STRUT MOUNTING BEARING (w/ Rear Seat Assembly)

(a) Install the strut mounting bearing to the front No. 1 shock absorber dust cover.

Top End of the Front No. 1 Shock Absorber Dust Cover

NOTICE:

Make sure that the top end of the front No. 1 shock absorber dust cover and strut mounting bearing are securely attached.

6. INSTALL FRONT UPPER COIL SPRING INSULATOR (w/ Rear Seat Assembly)

(a) Install the front upper coil spring insulator to the strut mounting bearing.

7. INSTALL STRUT MOUNTING BEARING WITH DUST COVER (w/ Rear Seat Assembly)

(a) Install the strut mounting bearing with dust cover to the front shock absorber assembly.

8. INSTALL NO.1 FRONT SHOCK ABSORBER DUST COVER (w/o Rear Seat Assembly)

(a) Install the front No. 1 shock absorber dust cover to the front shock absorber assembly.

9. INSTALL FRONT UPPER COIL SPRING INSULATOR (w/o Rear Seat Assembly)

(a) Install the front upper coil spring insulator to the front shock absorber assembly.

10. INSTALL STRUT MOUNTING BEARING (w/o Rear Seat Assembly)

(a) Install the strut mounting bearing to the front shock absorber assembly.

11. INSTALL WASHER

(a) Install the washer to the front shock absorber assembly.

12. INSTALL FRONT SPRING SEAT

(a) Install the front spring seat to the front suspension support sub-assembly.

NOTICE:

Install the front spring seat with the notch aligned with the guide lines of the front suspension support sub-assembly as shown in the illustration.

*a

Guide Line of Front Suspension Support Sub-assembly

*b

Slot of Front Spring Seat

13. INSTALL FRONT SUSPENSION SUPPORT SUB-ASSEMBLY (w/ Rear Seat Assembly)

(a) Install the front suspension support sub-assembly as shown in the illustration.

*a

Slot

Outside of the Vehicle

NOTICE:

Check that the slot on the shock rod and the slot on the front suspension support sub-assembly are aligned.

(b) Align the protrusion of the front suspension support sub-assembly with the front shock absorber lower bracket as shown in the illustration.

*a

0°+/- 0.5°

*b

Guide Line of Front Suspension Support Sub-assembly

*c

Installation Range of Alignment Mark of Strut Mounting Bearing

*d

Protrusion of Front Suspension Support Sub-assembly

*e

Front Shock Absorber Lower Bracket

*f

Strut Mounting Bearing Alignment Mark

*g

Arrow of Front No. 1 Shock Absorber Dust Cover

Outside of the Vehicle

NOTICE:

Make sure to install the front suspension support sub-assembly so that the protrusion of the front suspension support sub-assembly is aligned within +/- 0.5° of the center of the front shock absorber lower bracket.

(c) Align the alignment mark of the strut mounting bearing with the guide line location of the front suspension support sub-assembly as shown in the illustration.

NOTICE:

Install the strut mounting bearing within the guide line area of the front suspension support sub-assembly.

(d) Align the alignment mark of the strut mounting bearing with the arrow of the front No. 1 shock absorber dust cover as shown in the illustration.

14. INSTALL FRONT SUSPENSION SUPPORT SUB-ASSEMBLY (w/o Rear Seat Assembly)

(a) Install the front suspension support sub-assembly as shown in the illustration.

*a

Slot

Outside of the Vehicle

NOTICE:

Check that the slot on the shock rod and the slot on the front suspension support sub-assembly are aligned.

(b) Align the protrusion of the front suspension support sub-assembly with the front shock absorber lower bracket as shown in the illustration.

*a

0°+/- 0.5°

*b

Guide Line of Front Suspension Support Sub-assembly

*c

Installation Range of Alignment Mark of Strut Mounting Bearing

*d

Protrusion of Front Suspension Support Sub-assembly

*e

Front Shock Absorber Lower Bracket

*f

Strut Mounting Bearing Alignment Mark

Outside of the Vehicle

NOTICE:

Make sure to install the front suspension support sub-assembly so that the protrusion of the front suspension support sub-assembly is aligned within +/- 0.5° of the center of the front shock absorber lower bracket.

(c) Diagonally align the alignment mark of the strut mounting bearing with the location of the protrusion location of the front suspension support sub-assembly.

NOTICE:

Align and install the strut mounting bearing with the alignment mark within the guide line area of the front suspension support sub-assembly.

15. INSTALL COLLAR

(a) Install the collar to the front shock absorber assembly.

16. TEMPORARILY TIGHTEN FRONT SUPPORT TO FRONT SHOCK ABSORBER NUT

(a) Temporarily tighten a new front support to front shock absorber nut.

(b) Remove SST from the front coil spring.

NOTICE:

Do not use an impact wrench. It will damage SST.

17. CONNECT FRONT NO. 1 SHOCK ABSORBER DUST COVER (w/ Rear Seat Assembly)

(a) Connect the end of the front No. 1 shock absorber dust cover with the claws of the front shock absorber assembly.

NOTICE:

  • Make sure that the end of the front No. 1 shock absorber dust cover is securely attached to the claws of the front shock absorber assembly.
  • Make sure there is no excessive damage to the bellows of the front No. 1 shock absorber dust cover.
  • Do not allow oil, grease, etc., to contact the front No. 1 shock absorber dust cover.
  • If oil or grease has adhered, wipe clean with a cloth. Do not use an alcohol based cleaner.

*1

Front No. 1 Shock Absorber Dust Cover

*a

Claw

18. INSTALL FRONT SHOCK ABSORBER WITH COIL SPRING

(a) Install the front shock absorber with coil spring (upper side) with the nut and 2 spacers.

Torque:

50 N·m {510 kgf·cm, 37 ft·lbf}

(b) Temporarily install the 2 nuts to the front shock absorber assembly.

(c) Install the front shock absorber with coil spring (lower side) to the steering knuckle with the 2 bolts and 2 nuts.

Torque:

270 N·m {2753 kgf·cm, 199 ft·lbf}

NOTICE:

  • When installing the nuts, keep the bolts from rotating.
  • Do not apply lubricants to the steering knuckle and shock absorber contact surfaces.

HINT:

The bolts can be installed in either direction, however, make sure that they are both installed in the same direction.

19. INSTALL FRONT SPEED SENSOR

(a) Set the 2 hooks of front speed sensor to the front shock absorber assembly.

Hook

NOTICE:

Do not twist the front speed sensor when installing it.

(b) Install the front speed sensor and front flexible hose to the front shock absorber assembly with the bolt.

Torque:

29.4 N·m {300 kgf·cm, 22 ft·lbf}

(c) Engage the clamp.

20. INSTALL FRONT STABILIZER LINK ASSEMBLY

(a) Install the front stabilizer link assembly to the front shock absorber assembly with the nut.

Torque:

74 N·m {755 kgf·cm, 55 ft·lbf}

HINT:

If the ball joint turns together with the nut, use a 6 mm hexagon socket wrench to hold the stud bolt.

(b) Install the cap.

21. FULLY TIGHTEN FRONT SUPPORT TO FRONT SHOCK ABSORBER NUT

(a) Fully tighten the front support to front shock absorber nut.

Torque:

47 N·m {479 kgf·cm, 35 ft·lbf}

NOTICE:

Perform this step only when the front shock absorber with coil spring has been disassembled.

(b) Remove the 2 nuts from the front shock absorber assembly.

22. INSTALL FRONT SUSPENSION SUPPORT DUST COVER

(a) Install the front suspension support dust cover.

23. INSTALL OUTER COWL TOP PANEL SUB-ASSEMBLY

(a) Install the outer cowl top panel sub-assembly with the 9 bolts and 4 nuts.

Torque:

Bolt :

12 N·m {122 kgf·cm, 9 ft·lbf}

Nut :

50 N·m {510 kgf·cm, 37 ft·lbf}

(b) Engage the 2 clamps to install the wire harness to the outer cowl top panel sub-assembly.

24. INSTALL NO. 1 HEATER AIR DUCT SPLASH SHIELD SEAL

(a) Engage the claw to install the No. 1 heater air duct splash shield seal to the outer cowl top panel sub-assembly.

25. INSTALL WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY

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26. INSTALL FRONT WHEEL

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27. INSPECT AND ADJUST FRONT WHEEL ALIGNMENT

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT