Disassembly (GLI/GTI)
Clamp caliper housing in soft-jawed vise. Use Allen wrench to remove piston from bore, turning it counterclockwise. Pry piston seal out of caliper housing bore, using care to avoid scratching surface of bore.
Clamp caliper housing in soft-jawed vise. Use Allen wrench to remove piston from bore, turning it counterclockwise. Pry piston seal out of caliper housing bore, using care to avoid scratching surface of bore.