Disc Brake System: Testing and Inspection

1. Remove the drive shaft.





2. Set the special tool to the front hub assembly as shown above.





3. Measure hub torque to obtain value (A) with pads removed to measure brake drag torque. Torque value will be used later to calculate brake drag force with the pads installed.

NOTE: Tighten the nuts in order to secure the disc to the hub.

4. Securely attach the pad clip to the caliper support.





5. Clean piston and insert into cylinder (caliper) with special tool.





6. Apply grease to the attaching faces of pad and inner shim and to the attaching faces of inner and outer shims. Apply so as not to spread it out from the edge of shim. Specified grease: MOPAR Multi-purpose Grease Part No. 2932524 or equivalent

CAUTION:
a. Do not deposit grease or other dirt on pad or brake disc friction surfaces.
b. The grease should be applied so that it does not protrude from the shim surfaces.

7. Be careful that the piston boot does not catch and tear as the caliper assembly and lock pin are installed.





8. Check brake drag torque as follows.
a. Start engine and hold brake pedal down with a force of 196 N (44 Lbs.) for 5 seconds.
b. Stop engine
c. Turn brake disc forward 10 times.
d. Check hub torque To obtain value (B) with spring scale.
e. The drag of torque is the difference between value (B) and value (A), if calculation exceeds 4 Nm (35 inch lbs.) or less at 69 N (15.4 Lbs.). Then disassemble and clean the piston. Check for corrosion or worn piston seal, and check the sliding condition of the lock pin and guide pin.
9. Reinstall the drive shaft.