Question 1

How to remove and replace the timing cover on Toyota 4Runner?

Accepted Answer

Special Service Tool 09226-10010 coupled with a hammer needs to be used for installing the timing chain cover oil seal properly before greening the lip of the seal with MP grease. Begin by clearing all old packing (FIPG) materials while maintaining contact surfaces of the timing chain cover along with cylinder head and cylinder block free from contamination. The LH cylinder head requires a new O-ring while continuous threads of Toyota Genuine Seal Packing Black or Three Bond 1207B and equivalent materials run at specified locations. Seal Packing 1282B and Three Bond 1282B or equivalent must be used when working on the water pump part. Apply the seal packing on the timing chain cover only within three minutes before installation then secure the fasteners within 15 minutes while avoiding packing at the designated area. Attach the oil pump drive rotor to the crankshaft timing gear before using 24 bolts along with 2 nuts to fasten it securely with a 23 Nm (235 kgf-cm, 17 ft-lbf) torque specification. The oil filter bracket sub-assembly requires new gasket installation before securing it with 3 bolts and 2 nuts, torque should be set to 19 Nm (194 kgf-cm, 14 ft-lbf). Install the VVT sensor as well as the camshaft timing oil control valve assembly before positioning both cylinder head cover sub-assemblies (LH and RH). Finish the installation by tightening the ignition coil assembly to 10 Nm (102 kgf-cm, 7 ft-lbf) followed by the intake air surge tank then add the oil sub-assembly and strainer sub-assembly of No.2 oil before securing the crankshaft pulley and sub-assemblies of No.2 idler pulley along with the V-ribbed belt tensioner and cooler compressor assembly but retain the generator assembly and vane pump based on need. Install the water inlet followed by the oil level gauge guide and air cleaner assembly and connect the ventilation hose No.2. Fully tighten all components after you install the fan with fluid coupling and the fan and generator V belt. Secure the radiator support seal upper while installing the battery together with the differential carrier assembly front and power steering link assembly. End your task by adding engine oil and coolant while inspecting for leaks before installing the V-bank cover along with its two nuts tightened to 7.5 Nm (76 kgf-cm, 66 in-lbf).

Question 2

How to replace the timing cover or timing chain case oil seal on Toyota Camry?

Accepted Answer

The replacement process for timing gear case or timing chain case oil seal begins by dismissing bolts from the front wheel RH and engine moving control rod with bracket, front fender apron seal RH and engine cover sub-assembly No.1. The procedure starts by removing engine mounting stay No.2 RH and engine mounting bracket No.2 RH. Then the sequence continues with fan and generator V belt before removing them both. Special Service Tool enables the removal of the crankshaft pulley bolt along with its pulley after bolt loosening. The oil seal on the timing gear case or timing chain case should be removed using Special Service Tool: 09308-10010, 09950-60010 (09951-00200). The installation procedure begins with applying MP grease to the lip of a new oil seal while keeping it clear of external contaminants before using Special Service Tool: 09223-22010 and a hammer to tap the oil seal until the surface reaches the rear oil seal retainer edge followed by wiping off excess grease from the crankshaft. Install the crankshaft pulley by positioning its set key into the key groove then securing it with the pulley bolt at 170 Nm (1,733 kgf-cm, 125 ft. lbs.). Follow with installation of the fan and generator V belt along with engine mounting bracket No.2 RH and engine mounting stay No.2 RH according to their respective torque specifications of 52 Nm and 64 Nm. The installation process requires attachment of the engine moving control rod with bracket through its 3 bolts to a torque of 64 Nm (653 kgf-cm, 47 ft. lbs.). Afterward replace the front wheel RH and verify there are no engine oil leaks.

Question 3

How to overhaul the TIMING COVER SUB-ASSEMBLY on Toyota Tacoma?

Accepted Answer

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.).

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