Passat Sedan L4-1.9L DSL Turbo (AHH) (1998)
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Install inner sealing lip in cylinder grove with plastic wedge 3409 or equivalent.
Note: Hold piston in front of caliper housing while performing this step.
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Press piston in brake caliper housing with piston resetting tool.
Note: Protective seal outer lip must seat in piston groove.
Pressure Leak Test
Pressure leak test
Special tools required
Test requirements:
Brake system (hydraulic unit, brake hoses, brake lines and brake calipers) operating properly, leak free.
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Remove bleeder screw at a front caliper. Connect pressure gauge VAG 1310 or VAG 1310A and bleed.
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Install brake pedal depressor tool between brake pedal and driver's seat.
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Apply pressure to brake pedal until gauge indicates 50 bar (725 psi). Pressure must not drop by more than 4 bar (58 psi) during test period of 45
seconds.