DISASSEMBLY PROCEDURE 1. FIX VANE PUMP ASSEMBLY
2. REMOVE POWER STEERING SUCTION PORT UNION
(b) Using a screwdriver, remove the O-ring from the suction port union. 3. REMOVE FLOW CONTROL VALVE ASSEMBLY
(b) Remove the O-ring from the pressure port union. (c) Remove the flow control valve and compression spring. 4. REMOVE VANE PUMP REAR HOUSING
5. REMOVE VANE PUMP SHAFT SUB-ASSEMBLY WITH PULLEY
(b) Remove the vane pump shaft sub-assembly with pulley. NOTICE: Be careful not to drop or damage the vane pump shaft sub-assembly with pulley. If it is damaged, replace the vane pump assembly. 6. REMOVE VANE PUMP ROTOR
(b) Remove the vane pump rotor. 7. REMOVE VANE PUMP CAM RING
8. REMOVE VANE PUMP FRONT SIDE PLATE
9. REMOVE VANE PUMP HOUSING OIL SEAL
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Toyota Tundra Service Manual > Sfi System: Secondary Air Injection System Switching Valve "A" Circuit (P0412,P0415)
DESCRIPTION The Secondary Air Injection (AIR) system consists of an air pump, the Air Switching Valve (ASV), a pressure sensor, the Air Injection Control Driver (AID) and the ECM. For a short time after a cold engine start, the AIR system pumps secondary air to the exhaust port of the cylinder head ...