Load Sensing Proportioning Valve -- Replacement |
| 1. DRAIN BRAKE FLUID |
- NOTICE:
- Wash off brake fluid immediately if it comes in contact with any painted surface.
| 2. REMOVE LOAD SENSING PROPORTIONING VALVE ASSEMBLY |
Using a union nut wrench, disconnect the 3 brake lines from the valve.
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Remove the 2 bolts and valve.
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| 3. INSTALL LOAD SENSING PROPORTIONING VALVE ASSEMBLY |
Install the valve with the 2 bolts.
- Torque:
- 29 N*m{300 kgf*cm, 22 ft.*lbf}
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Using a union nut wrench, connect the 3 brake lines to the valve.
- Torque:
- 15 N*m{155 kgf*cm, 11 ft.*lbf}
- NOTICE:
- Use the formula to calculate special torque values for situations where a union nut wrench is combined with a torque wrench (Toyota Fortuner RM000000UYX010X.html).
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| 4. FILL RESERVOIR WITH BRAKE FLUID |
- Fluid:
- SAE J1703 or FMVSS No. 116 DOT 3
| 5. BLEED AIR FROM BRAKE MASTER CYLINDER |
- HINT:
- If the master cylinder has been disassembled or if the reservoir becomes empty, bleed air from the master cylinder.
Using a union nut wrench, disconnect the 2 brake lines from the master cylinder.
Slowly depress and hold the brake pedal.
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Cover the outer holes with your fingers, and release the pedal.
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Repeat the 2 previous steps 3 or 4 times.
Using a union nut wrench, connect the 2 brake lines to the master cylinder.
- Torque:
- 15 N*m{155 kgf*cm, 11 ft.*lbf}
- NOTICE:
- Use the formula to calculate special torque values for situations where a union nut wrench is combined with a torque wrench (Toyota Fortuner RM000000UYX010X.html).
| 6. BLEED AIR FROM LOAD SENSING VALVE BODY |
Remove the bleeder plug cap.
Connect a vinyl tube to the bleeder plug.
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Depress the brake pedal several times, and then loosen the bleeder plug with the pedal depressed.
When fluid stops coming out, immediately tighten the bleeder plug. Then release the pedal.
Repeat the 2 previous steps until all the air in the brake fluid is gone.
Tighten the bleeder plug.
- Torque:
- 11 N*m{107 kgf*cm, 8 ft.*lbf}
Install the bleeder plug cap.
| 7. BLEED AIR FROM BRAKE LINE |
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Remove the bleeder plug cap.
Connect a vinyl tube to the bleeder plugs.
Depress the brake pedal several times, and then loosen the bleeder plug with the pedal depressed.
When fluid stops coming out, immediately tighten the bleeder plug. Then release the pedal.
Repeat the 2 previous steps until all the air in the brake fluid is gone.
Tighten the bleeder plug.
- Torque:
- 11 N*m{110 kgf*cm, 8 ft.*lbf}for front brake
- 10 N*m{102 kgf*cm, 7 ft.*lbf}for rear brake
Install the cap.
Bleed air from the brake line for each wheel by repeating the above procedures.
| 8. BLEED AIR FROM CLUTCH LINE (for Manual Transmission) |
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Remove the bleeder plug cap.
Connect the vinyl tube to the bleeder plug.
Depress the clutch pedal several times, and then loosen the bleeder plug with the pedal depressed.
At the point when fluid stops coming out, tighten the bleeder plug, and then release the clutch pedal.
Repeat the previous 2 steps until all the air in the fluid is completely bled out.
Tighten the bleeder plug.
- Torque:
- 11 N*m{112 kgf*cm, 8 ft.*lbf}
Install the bleeder plug cap.
Check that all the air has been bled out of the clutch line.
| 9. CHECK BRAKE FLUID LEVEL IN RESERVOIR |
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Check the fluid level and add fluid if necessary.
- Fluid:
- SAE J1703 or FMVSS No. 116 DOT 3
- HINT:
- Add fluid to a level between the reservoir's MIN and MAX lines.
| 10. CHECK FOR BRAKE FLUID LEAKAGE |