Q: How to install the air injection pump assembly on Toyota 4Runner?
A: Begin air injection pump installation by connecting three insulators to the air pump assembly through 3 bolts having a torque of 10 Nm (102 kgf-cm, 7 ft-lbf). Proceed by assembling the air pump assembly with bracket through four bolts before tightening them to 16 Nm (163 kgf-cm, 12 ft-lbf). After that connect the pressure sensor connector and air switching valve connector, complete the installation with the No. 2 air hose connection to the air switching valve. The water by-pass pipe sub-assembly should be installed first followed by the intake manifold assembly with proper hose and connector connections from the intake manifold. Start the installation of fuel No. 2 hose then install fuel hose before adding the air cleaner hose assembly and throttle body cover sub-assembly. The procedure ends with engine coolant addition as well as leak checks for both coolant and fuel components.
Q: How to remove the Air Injection Pump on Toyota Tacoma?
A: The starting point to remove the Air Injection Pump involves disconnecting the negative battery terminal cable. The procedure starts with removing the air pump assembly after displacing the washer jar while extracting its 2 bolts to free up space for air pump assembly dismantlement. First disconnect the air injection system No. 1 hose before removing the air pump connector along with its wire harness clamp. Start by disconnecting the battery cable and remove the 3 bolts to extract the air pump assembly with bracket along with the disconnecting of the air pump connector clamp. Discharge the air pump from the bracket by disengaging the three fittings of its insulator.
Q: How to service and repair the Air Injection Pump on Toyota Tundra?
A: Start your repair or servicing of the 1GR-FE Air Injection Pump system by disconnecting the negative battery cable then waiting ninety seconds after switch-off to protect navigation system memory. Nine clips secure the right-hand front fender liner which needs to be taken out for the next step. Start hose removal of No. 3 air injection system by first detaching two clips with clip remover then folding the fender apron seal to access two connectors and their clamps before unsticking both clamps and removing two bracket clips. The removal of the No. 2 air injection system hose requires separating the bracket clip first. You should remove the air pump assembly by unthreading its two nut and bolt fasteners.