Toyota 4.7L 2UZ-FE V8 Timing Belt Replacement Part 2
Estimated Time: 6-7 Hours
10mm 3/8" socket
12mm 3/8" socket
14mm 3/8" socket
3/8" ratchet or compact impact wrench
22mm 1/2" impact socket
1/2" impact wrench
Die grinder with green 3m roloc disc or drill with wire wheel
Slip joint pliers
AISIN TKT021 w/ Hydraulic Tensioner
-It is not necessary, but I recommend replacing these wear items, too:
AISIN FBT002 Radiator Fan Clutch Bearing Bracket
GATES 23311 Lower Radiator Hose
GATES 22166 Upper Radiator Hose
GATES 38488 DriveAlign Premium OE Automatic Belt Tensioner
GATES K060878 Premium OE Micro-V Belt
Please refer to Part 1 of this tutorial for Steps 1-24.
Replace the O-Ring for the water crossover pipe into the back of the water pump. Prepare for the reinstallation of the water pump. Now, you may choose to use the supplied water pump gasket IF the mating surface is not pitted due to corrosion. However, I highly recommend a liquid gasket, like Ultra Black RTV, if you see pitting or any signs of cavitation. Install all 14mm hardware. (I have attached a picture of the bolt locations for the water pump, in the event that you did not heed my advice to keep the bolts organized with their respective components and, consequently, you are now filled with regret.)
(Pro Tip: remove the two 10mm bolts to the CMP sensor, if necessary, to prevent wire damage.)
Install the 10mm allen head sleeve for the new slack adjuster and torque to 26 lbs/ft.
Install the 14mm nut and washer for the new timing belt idler pulley and torque to 26 lbs/ft.
Look at the timing marks on the new belt. The arrows will point towards the front of the vehicle. MAKE SURE THAT THE CAMSHAFTS ARE STILL LINED UP WITH THEIR TIMING MARKS! Align the mark on the belt with the driver's side camshaft gear and slide the belt into place. Ensure that ALL SLACK IS REMOVED from the belt and align the belt arrow with the dot on the front of the crankshaft timing gear, then slide the belt on. Keep tension on the belt, align the arrow on the belt with the timing mark on the passenger's side camshaft gear, then slide the belt onto the camshaft. Slide the remaining portion of the belt over the pulley for the slack adjuster. The belt should now be fully installed. CHECK ALL TIMING MARKS to make sure they are aligned.
(Pro Tip: aligning the driver's side camshaft to the crankshaft may require you to use a 19mm box wrench to manipulate cam gear placement.)
Lightly lubricate the rubber grommet for the timing belt tensioner. Insert tensioner into bore and tighten two 12mm bolts to 19 lbs/ft to secure the timing belt tensioner. CHECK ALL OF THE TIMING MARKS ONCE AGAIN. Remove the retaining pin from the tensioner if the marks are still aligned.
Thread in the 22mm crankshaft bolt. Use a ratchet to spin the crankshaft 8 revolutions/camshafts 4 revolutions; set the engine to TDC. Perform one final assessment of the timing marks to make certain that they are aligned. If so, you can now de-clench and proceed with reassembling the remainder of the timing cover.
(Pro Tip: use a helper to hold the timing belt to the cam gear pulley during the first few degrees of rotation. This ensures that the belt is not likely to slip off a cam gear before the tensioner fully extends and applies full pressure against the belt via the slack adjuster.)
Remove the crankshaft pulley bolt, reinstall toner ring concave towards the front the vehicle, and bolt the lower timing cover back in place. Align and slide the crankshaft pulley over the snout and tighten 22mm crankshaft pulley bolt to 181 lbs/ft.
Reinstall fan clutch bracket (12 lbs/ft) and idler pulley (29 lbs/ft).
(Pro Tip: the majority of the bolts with 12mm and 14mm heads will be torqued to 12lbs/ft.)
Reinstall drivebelt tensioner.
Reinstall upper timing cover piece.
Slide CMP sensor through hole and reinstall driver's side camshaft inspection cover.
Reinstall passenger's side camshaft inspection cover.
Reinstall A/C compressor. Partially thread in all bolts and nuts before tightening, since the compressor attaches to various components that are not always perfectly mated.
Reinstall alternator and secure B+ harness to bracketry.
Reinstall power steering pump and connect harness to switch.
Clean the mating surface of the thermostat housing, replace the large O-ring, and use RTV or anaerobic sealant on the mating surface. Be careful to align the thermostat housing BEFORE making contact with the mating surface and tightening the two 12mm bolts. Route oil cooler housing hose and connect to oil cooler housing. Secure the hose with one 10mm nut and one 10mm bolt.
Reconnect harness to throttle body, CMP sensor, and VTC actuator.
Reinstall radiator, tighten all bolts, reinstall upper and lower radiator hoses, slide fan clutch onto to the fan clutch pulley, and tighten four 12mm nuts until the smooth pulley begins to slip across the belt.
Reinstall the intake tube, tighten hose clamps, and reattach PCV and AIR VSV hoses.
Add Toyota approved extended life coolant until the radiator is full, turn on the blower, set the blend dial to max heat, and bleed the cooling system by running the engine until hot air begins to blow out the vents.
Reinstall the radiator cap, hose down the engine, check for leaks, and drive the vehicle to verify the integrity of the repair.