Montero Sport 2WD V6-3.0L SOHC (1997)
Brake Caliper: Testing and Inspection
1. Tighten the disc/rotor to the hub with hub nuts. Measure hub torque (A) with the pads removed using a spring balance.
2. Securely attach the pads and clips to the caliper support.
3. Clean the piston and insert into cylinder with disc brake piston expander tool No. MB990520. Be careful that the piston boot does not become
caught, when lowering the caliper assembly and installing the lock pin.
4. Check the brake drag force (B) as follows.
5. Start the engine and hold the brake pedal down for 5 seconds. The pedal depression force should be approximately 196 N (44 pounds.)
6. Stop the engine.
7. Turn the brake disc forward 10 times.
Check Hub Torque
8. Check the hub torque (B) with a spring scale. Calculate the drag force of the disc brake, the difference between hub torque (B) and hub torque (A).
The standard value is 69 N (16 pounds) or less.
9. If the brake drag force exceeds the standard value, disassemble and clean the piston. Check for corrosion or worn piston seal, and check the sliding
condition of the lock pin and Guide pin.
