Vacuum Brake Booster: Service and Repair

MASTER CYLINDER ASSEMBLY AND BRAKE BOOSTER









REMOVAL AND INSTALLATION
INSTALLATION SERVICE POINTS
>>A<< VACUUM HOSE CONNECTION





Insert vacuum hose with its paint mark facing upward.

>>B<< PUSH ROD PROTRUSION AMOUNT CHECK AND ADJUSTMENT





1. Use the vacuum pump to measure dimension A applying a negative pressure of 66.7 kPa to the brake booster.
Standard value (A): 10.15 - 10.40 mm (0.400 - 0.409 inch)

NOTE: When a negative pressure of 66.7 kPa is not applied to the brake booster, the push rod protrusion amount (A) should be 8.85 - 9.10 mm (0.348 - 0.358 inch).





2. If the protrusion amount is not within the standard value range, adjust the push rod length by turning the push rod. Use the special tool to turn the push rod while holding the rod spline with angle-nose pliers.

>>C<< RESERVOIR HOSE CONNECTION





Insert the reservoir hose with its paint mark facing front of the vehicle.