INSPECTION BEFORE REMOVAL

Check the piston boots for breakage or hardening. Disassemble the caliper if necessary. (Replace the piston boots and piston seals as a set.) Refer to Disassembly and Assembly (GT-R certified NISSAN dealer).
 
 INSPECTION AFTER INSTALLATION

Check the front disc brake for drag. Perform the following procedure if necessary.
    1.Remove brake pad. Refer to Exploded View (GT-R certified NISSAN dealer).
    2.Use a brake caliper wrench [SST: KV991112S0 (J-49023)] to return the piston.
    ■ CAUTION ■
    Check the fluid level in the reservoir tank. Because the brake fluid returns to the reservoir tank of master cylinder when pressing the piston.
    3.Install brake pad. Refer to Exploded View (GT-R certified NISSAN dealer).
    4.Depress the brake pedal several times, check the front disc brake for drag again. Disassemble the caliper if necessary. Refer to Disassembly and Assembly (GT-R certified NISSAN dealer).
 
 INSPECTION AFTER DISASSEMBLY

Check the following items and replace if necessary.
 
 Caliper

Check the cylinder inner wall for wear, cracks or damage.
■ CAUTION ■
Always clean with new brake fluid. Never clean with mineral oil such as gasoline and light oil.
 
 Piston

Check the piston surface for wear, cracks, and damage.
■ CAUTION ■
A piston sliding surface is plated. Never polish with sandpaper.
 
 Pad Pin

  • Check the piston pin for corrosion, wear, cracks or damage.
  • Check the metal bushing of pad pin for settling and damage.
 
 Tie-rod and Cross Spring

Check the tie-rod and cross spring for wear, cracks or damage.