Front Brake Pad, Brake Caliper & Brake Rotor: Overhaul

HINT:

• Use the same procedures for the RH side and LH side.
• The procedures listed below are for the LH side.

1. REMOVE FRONT WHEEL 
2. DRAIN BRAKE FLUID 
   NOTE: Wash brake fluid off immediately if it adheres to any painted surface.
3. DISCONNECT FRONT FLEXIBLE HOSE 
   1. Remove the union bolt and the gasket(s) from the disc brake cylinder sub-assy, then disconnect the flexible hose.

   HINT:

   Gasket has 2 types: 2-piece type and 1-piece type.

4. REMOVE FRONT DISC BRAKE CYLINDER SUB-ASSY 
   1. Hold the front disc brake cylinder slide pin (No. 1) and slide pin (No. 2), and remove the 2 bolts.
   Fig 1: Removing Front Disc Brake Cylinder Sub-Assy

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. REMOVE DISC BRAKE PAD KIT FRONT (PAD ONLY) 
   1. Remove the 2 disc brake pads with anti-squeal shims from the front disc brake cylinder mounting LH.
6. REMOVE ANTI SQUEAL SHIM KIT FRONT 
   1. MZ Series (SE, XLE Grade):

      Remove the 2 anti-squeal shims from each pad.

   2. Except MZ Series (SE, XLE Grade):

      Remove the 4 anti-squeal shims from each pad.

   3. Using a screwdriver, remove the pad wear indicator plates from each pad.
   Fig 2: Removing Pad Wear Indicator Plates Using A Screwdriver

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. REMOVE FRONT DISC BRAKE PAD SUPPORT PLATE 
   1. Remove the front disc brake pad support plate (No. 1) and front disc brake pad support plate (No. 2) from the front disc brake cylinder mounting LH.
8. REMOVE FRONT DISC BRAKE CYLINDER SLIDE PIN 
   1. Remove the front disc brake cylinder slide pin (No. 1) and front disc brake cylinder slide pin (No. 2) from the front disc brake cylinder mounting LH.
   Fig 3: Removing Front Disc Brake Cylinder Slide Pin

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. REMOVE FRONT DISC BRAKE CYLINDER SLIDE BUSH 
   1. Using a screwdriver, remove the front disc brake cylinder slide bush from the front disc brake cylinder slide pin (No. 2).
   Fig 4: Removing Cylinder Slide Bush From Pin No.2
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: Do not damage the front disc brake cylinder slide pin (No. 2).
10. REMOVE FRONT DISC BRAKE CYLINDER MOUNTING 
    1. Remove the 2 bolts and front disc brake cylinder mounting LH.
    Fig 5: Removing Front Disc Brake Cylinder Mounting Bolts

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
11. REMOVE FRONT DISC BRAKE BUSH DUST BOOT 
    1. Hold the front disc brake cylinder mounting LH in the vise through the soft jaws.
    2. Using a screwdriver and a hammer, remove the 2 front disc brake bush dust boots from the front disc brake cylinder mounting LH.
    Fig 6: Removing Front Disc Brake Bush Dust Boot

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
12. REMOVE CYLINDER BOOT 
    1. Using a screwdriver, remove the set ring and cylinder boot.
    NOTE: Do not damage the piston groove and cylinder groove.
    Fig 7: Removing Set Ring And Cylinder Boot Using A Screwdriver

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
13. REMOVE FRONT DISC BRAKE PISTON 
    1. Place a shop rag between the front disc brake piston and the disc brake cylinder sub-assy.
    2. Use compressed air to remove the front disc brake piston from the disc brake cylinder sub-assy.
    Fig 8: Removing Front Disc Brake Piston

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    CAUTION: Do not place your fingers in front of the piston when using compressed air.
    NOTE: Do not spatter the brake fluid.
14. REMOVE PISTON SEAL 
    1. Using a screwdriver, remove the piston seal from the front disc brake cylinder sub-assy.
    NOTE: Do not damage the inner cylinder and cylinder groove.
    Fig 9: Removing Piston Seal Using A Screwdriver

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
15. REMOVE FRONT DISC BRAKE BLEEDER PLUG CAP 
16. REMOVE FRONT DISC BRAKE BLEEDER PLUG 
17. INSPECT BRAKE CYLINDER AND PISTON 
    1. Check the brake cylinder bore and front disc brake piston for rust or scoring.

    If necessary, replace the brake cylinder and piston.

18. INSPECT PAD LINING THICKNESS 
    1. Using a ruler, measure the pad lining thickness.

    Standard thickness: 12.0 mm (0.472 in.) 

    Minimum thickness: 1.0 mm (0.039 in.) 

    If the pad lining thickness is equal to the minimum thickness or less, replace the brake pad.

    Fig 10: Measuring Pad Lining Thickness

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
19. INSPECT FRONT DISC BRAKE PAD SUPPORT PLATE 
    1. Inspect the front disc brake pad support plate (No. 1) and front disc brake pad support plate (No. 2).

    HINT:

    Make sure that both have sufficient rebound, have no deformation, cracks or wear, and that all rust and dirt is cleaned off.

    If necessary, replace the brake pad support plate.

20. INSPECT DISC THICKNESS 
    1. Using a micrometer, measure the disc thickness.

    Standard thickness: 28.0 mm (1.102 in.) 

    Minimum thickness: 26.0 mm (1.024 in.) 

    If the disc thickness is less than the minimum, replace the disc.

    Fig 11: Measuring Disc Thickness Using A Micrometer

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
21. REMOVE FRONT DISC 
    1. Put matchmarks on the front disc and the axle hub.
    2. Remove the front disc.
22. INSTALL FRONT DISC 
    1. Aligning the matchmarks, install the front disc.

       HINT:

       When replacing the disc with a new one, select the installation position where the front disc has the minimum runout.

       Fig 12: Identifying Front Disc Matchmarks

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
23. INSPECT DISC RUNOUT 
    1. Check the bearing play in the axial direction and check for the axle hub runout (see ON-VEHICLE INSPECTION ).
    2. Temporarily fasten the front disc together with the hub nuts.

       Torque: 103 N.m (1,050 kgf.cm, 76 ft.lbf) 

    3. Using a dial indicator, measure the disc runout 10 mm (0.39 in.) away from the outer edge of the front disc.
       Fig 13: Measuring Disc Runout Using A Dial Indicator

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

       Maximum disc runout: 0.05 mm (0.0020 in.) 

       If the runout exceeds the maximum value, change the installation positions of the disc and axle so that the runout will become minimal. If the runout exceeds the maximum even when the installation positions are changed, grind the disc. If the disc thickness is less than the minimum, replace the front disc.

24. TEMPORARILY TIGHTEN FRONT DISC BRAKE BLEEDER PLUG 
25. INSTALL FRONT DISC BRAKE BLEEDER PLUG CAP 
26. INSTALL PISTON SEAL 
    1. Apply lithium soap base glycol grease to a new piston seal.
    2. Install the piston seal to the front disc brake cylinder sub-assy.
27. INSTALL FRONT DISC BRAKE PISTON 
    1. Apply lithium soap base glycol grease to the front disc brake piston and new cylinder boot.
    2. Install the cylinder boot to the front disc brake piston.
    3. Install the front disc brake piston to the front disc brake cylinder sub-assy.
    NOTE: Do not install the piston forcibly in the front disc brake cylinder sub-assy.
    Fig 14: Applying Lithium Soap Base Glycol Grease To Front Disc Brake Piston And Cylinder Boot

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
28. INSTALL CYLINDER BOOT 
    1. Install the cylinder boot to the front disc brake cylinder sub-assy.
       NOTE: Install the boot securely to the grooves of the cylinder and piston.
    2. Using a screwdriver, install the set ring.
    Fig 15: Installing Cylinder Boot

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE: Do not damage the cylinder boot.
29. INSTALL FRONT DISC BRAKE BUSH DUST BOOT 
    1. Hold the front disc brake cylinder mounting LH in the vise through the soft jaws.
    2. Place the front disc brake cylinder mounting LH in the vise.
    3. Apply lithium soap base glycol grease to the sealing surface of 2 new front disc brake bush dust boots (see FRONT BRAKE ).
    4. Using a socket wrench (19 mm) and a hammer, drive the 2 front disc brake bush dust boots to the front disc brake cylinder mounting LH.
    Fig 16: Installing Front Disc Brake Bush Dust Boots Using A Socket Wrench And Hammer

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
30. INSTALL FRONT DISC BRAKE CYLINDER SLIDE BUSH 
    1. Apply lithium soap base glycol grease to a new front disc brake cylinder slide bush (see FRONT BRAKE ).
    2. Install the cylinder slide bush to the bottom side of the front disc brake cylinder slide pin (No. 2).
31. INSTALL FRONT DISC BRAKE CYLINDER MOUNTING 
    1. Install the front disc brake cylinder mounting with the 2 bolts.

    Torque: 107 N.m (1,090 kgf.cm, 79 ft.lbf) 

    Fig 17: Installing Front Disc Brake Cylinder Mounting Bolts

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
32. INSTALL FRONT DISC BRAKE CYLINDER SLIDE PIN 
    1. Apply lithium soap base glycol grease to the sliding part and the sealing surface of the front disc brake cylinder slide pin (No. 1) and front disc brake cylinder slide pin (No. 2).
    2. Install the front disc brake cylinder slide pin (No. 1) and front disc brake cylinder slide pin (No. 2) to the front disc brake cylinder mounting LH.
    Fig 18: Applying Lithium Soap Base Glycol Grease To Pin No.1 And No.2

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
33. INSTALL FRONT DISC BRAKE PAD SUPPORT PLATE 
    1. Install the front disc brake pad support plate (No. 1) and front disc brake pad support plate (No. 2) to the front disc brake cylinder mounting LH.
    NOTE: Install the pad support plates in the correct position and direction.
34. INSTALL ANTI SQUEAL SHIM KIT FRONT 
    NOTE:

    • When replacing worn pads, the anti-squeal shims must be replaced together with the pads.
    • Install the shims and pad wear indicator plates in the correct position and direction.
    1. Apply disc brake grease to the anti-squeal shims as shown in the illustration.
    2. Install the anti-squeal shims on each pad as shown in the illustration.
    3. Install the pad wear indicator plates to each pad.
    Fig 19: Installing Anti Squeal Shim Kit Front

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
35. INSTALL DISC BRAKE PAD KIT FRONT (PAD ONLY) 
    1. Install the disc brake pad kit front to the front disc brake cylinder mounting LH.
    NOTE:

    • There should be no oil or grease on the friction surface of the pads and the disc.
    • Brake pads are installed with indicator plates facing upward.
36. INSTALL FRONT DISC BRAKE CYLINDER SUB-ASSY 
    1. Install the front disc brake cylinder sub-assy with the 2 bolts.

    Torque: 34 N.m (350 kgf.cm, 25 ft.lbf) 

    Fig 20: Installing Front Disc Brake Cylinder Sub-Assy Bolts

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
37. INSTALL FRONT FLEXIBLE HOSE 
    1. Install new gasket(s) and flexible hose with the union bolt.

    Torque: 29 N.m (300 kgf.cm, 22 ft.lbf) 

    NOTE: Install the flexible hose lock securely in the lock hole in the disc brake cylinder.

    HINT:

    Gasket has 2 types: 2-piece type and 1-piece type.

38. FILL RESERVOIR WITH BRAKE FLUID (SEE  BRAKE FLUID  ) 
39. BLEED MASTER CYLINDER (SEE  BLEEDING  ) 

    SST 09023-00101

40. BLEED BRAKE LINE (SEE  BLEEDING  ) 
41. CHECK FLUID LEVEL IN RESERVOIR (SEE  BRAKE FLUID  ) 
42. CHECK FOR BRAKE FLUID LEAKAGE 
43. INSTALL FRONT WHEEL 

    Torque: 103 N.m (1,050 kgf.cm, 76 ft.lbf)