OEM 2002 Toyota Celica Brake Caliper

2002 Toyota Celica Brake Caliper Parts Q&A

• Q: How to service and repair the brake caliper on 2002 Toyota Celica?

  A: Start brake caliper repair by using a screwdriver to take off both the set ring along with the cylinder boot. Apply compressed air to pull out the piston using cloth which will isolate the piston from the caliper and avoid placing fingers ahead of its path. First remove the piston seal with a screwdriver and after that remove the 2 sliding pins from the torque plate. Users should remove the dust boots from the 1ZZ-FE engine whereas they need to tap out the 2 dust boots from the 2ZZ-FE engine using a screwdriver combined with a hammer. A 19 mm socket wrench must tap new dust boots in the torque plate structure while making sure the metal plate maintains appropriate fitting. Use a ruler to check pad lining thickness in accordance with standards: replacement of the pad occurs when it falls below 1.0 mm (0.039 inch) minimum thickness or shows severe wear: the 1ZZ-FE engine requires pad lining to measure 11.0 mm (0.433 inch) and the 2ZZ-FE engine pad lining should be 11.5 mm (0.453 inch). The micrometer allows checking of the disc thickness against standard dimensions of 25.0 mm (0.984 inch) and minimum requirement of 23.0 mm (0.906 inch) while replacement or grinding is warranted for conditions of minimum or severely damaged disc. The disc runout should be measured by using a dial indicator at a position 10 mm (0.39 inch) from the outer edge, while allowing a maximum allowable runout of 0.05 mm (0.0020 inch) and bearing play and axle hub runout should be checked, requiring disc adjustment or grinding when necessary. An adjustment of disc runout requires users to take off the knuckle's torque plate and bolts before unthreading hub nuts and the disc. The disc should be reinstalled at a 1/5 angle difference from its previous hub position when reinstalling hub nuts, which must receive torque settings of 103 Nm (1,050 kgf-cm, 76 ft. lbs.). Measure the runout again to record the minimum value and disc position then move on to check the remaining hub stations. The disc installation should go to the position which produced the smallest runout value less than 0.05 mm (0.0020 inch) otherwise replace the disc to conduct another measurement. After installation of the torque plate users must torque the mounting bolts to 107 Nm while using 1,090 kgf-cm torque and 79 ft. lbs. force. The order of disassembly moves backwards for reassembly and lithium soap base glycol grease must be applied to specified parts.