OEM 2005 Toyota Tacoma Timing Cover

2005 Toyota Tacoma Timing Cover Parts Q&A

• Q: How to overhaul the timing cover sub-assembly on 2005 Toyota Tacoma?

  A: The first task in rebuilding the timing chain cover sub-assembly (2TR-FE) involves removal of the oil pump relief valve using a 27 mm socket wrench to discard the relief valve plug with its gasket and separate the valve spring and oil pump relief valve from its position. Start by removing the oil pump cover through the process of unfastening its 7 bolts. You should pull out the oil pump rotor set from the timing chain cover next. Check the oil pump relief valve operation by applying oil to it then dropping it into the relief valve hole; replacement of both the valve and timing chain cover might be needed if it does not drop smoothly. Install the rotors of the oil pump rotor set into the timing chain cover while turning the marks toward the exterior and verify easy rotation. A feeler gauge should check the rotor tip clearance and a replacement of the timing chain cover needs to occur when the measured value exceeds maximum allowed values. The maximum rotor body and side clearance thresholds can be determined using a feeler gauge and precision straight edge then the timing chain cover needs replacement if either threshold is exceeded. Place the oil pump gear set into the timing chain cover with its marks exposed to the outside while continuously rotating it. Apply engine oil to the gear set before installation. Insert the 7 bolts into the oil pump cover and torque them to 9.0 Nm (92 kgf-cm, 80 inch lbs.) before putting oil on the relief valve to place it with its spring into the timing chain cover hole. A new gasket should go on the relief valve plug before using a 27 mm socket wrench to tighten it to 49 Nm (500 kgf-cm, 36 ft. lbs.).