Brake booster check valve

F4R or K4J

REMOVAL

• Remove the engine covers.

• Loosen the clamps (1) on the air duct.
• Remove the air duct (2).

• Disconnect the vacuum hose on the brake booster side (3).
• Pull the check valve while turning it to release it from the rubber sealing washer.

Note: Do not damage the vacuum hose on the air distributor. Damage requires replacement of the air distributor.

• Disconnect the vacuum hose on the intake manifold side (4).

INSTALLATION

• Check the condition of the sealing washer and the check valve.
• Replace any defective parts.
• Refit in the reverse order of removal.

F9Q or K9K

REMOVAL

• Remove the engine covers.
• Remove the air duct from the air box.

K9K

• Disconnect the vacuum hose on the brake booster side (1).
• Pull the check valve while turning it to release it from the rubber sealing washer.
• Disconnect the vacuum hose on the vacuum pump side (2).

F9Q

• Disconnect the vacuum hose on the brake booster side (1).
• Pull the check valve while turning it to release it from the rubber sealing washer.
• Disconnect the vacuum hose on the vacuum pump side (2).

INSTALLATION

• Check condition of:

• the sealing washer,
• the check valve.

• Replace any defective parts.
• Refit in the reverse order of removal.