![]() The vehicle is road tested to confirm normal operation and a service sticker is affixed to the engine noting the date of belt replacement and the vehicle mileage.Upon completion of the installation, the engine crankshaft is turned by hand 720 degrees and the correct position of the timing marks on the crankshaft and the camshafts is confirmed.Installation of the new timing belt includes all of the above steps, performed in reverse, following strict guidelines to assure camshaft and crankshaft (and balancing shaft, if equipped) are in perfect alignment after tensioner has been set.If the engine cooling system thermostat is only accessible with water pump replacement, the thermostat should be replaced as well. As the engine runs, this belt turns and keeps the pump working. The average cost for a Lexus GX470 Water Pump Replacement is between 838 and 964. Get a free detailed estimate for a repair in your area. If replacing the water pump, do so at this time, and of course drain the cooling system first. A Lexus Gx470 Water Pump Replacement costs between 838 and 964 on average.Remove timing belt tensioner and idler pulleys. Lock camshafts, as required, and note position of camshaft timing marks. Remove all accessories interfering with the removal of the timing belt covers.Once the engine is cold, set the crankshaft to top dead center with the number one piston on the compression stroke.How do mechanics replace the timing belt?Įngine designs vary, and thus the replacement procedure will vary, but broadly, the procedure is as follows: If your car has an interference engine, replacing the timing belt according to the maintenance schedule will minimize the chance that a belt failure will cause engine damage. These engine designs are referred to as interference engines. ![]() On some engines, if the timing belt has jumped, the pistons and valves can collide and there will be noise and damage. Should the belt jump, the engine will run poorly and perhaps not at all. After many tens of thousands of miles, the teeth can wear or break, or the belt can stretch, thus causing the belt to jump position on the crankshaft or camshaft gears. The molded, reinforced teeth on the timing belt engage gears on the crankshaft and camshafts. Occasionally, timing belts can break, or skip, while the engine is running. Engine stops abruptly or will not start.Your vehicle owner’s manual should state the specific service interval. How much should your Lexus repairs cost At Kelley Blue Book you can get the Fair Repair Price Range for the service you need. This truck is a 2005 Tundra but should be very close t. If an engine is equipped with a timing belt, the timing belt must be replaced at the service interval specified by the vehicle manufacturer regardless of whether or not any problem is visible, typically in the range of 60,000 to 90,000 miles. Detailed step by step guide on replacing your timing belt and water pump on your 4.7L Toyota or Lexus. that might be due to a worn belt, not a faulty component! If your GX470 is one of those Lexuss that shrieks horrendously when it runs, you likely have a worn belt, bad tensioner or both. As such, you may experience a dead battery, difficulty steering, overheating, etc. Not all vehicles have a timing belt (they typically have a timing chain instead), whereas all modern vehicles have a serpentine belt. Since the timing belt is deeper in the engine, it is often much more expensive to replace than the serpentine belt. The timing belt will often drive the water pump too. ![]() Serpentine belt vs timing belt? The timing belt connects the crankshaft to the camshaft, thus making sure the pistons and valves are operating in the correct sequence. The serpentine belt in your GX470 connects your engine to many of the components you use every day such as your air conditioner, battery (via the alternator), power steering and cooling system - a quick look at the serpentine belt diagram outline all of the components feeding from it. ![]() This includes labor costs and the price of the parts. ![]() Check out our parts page for coupons on new belts for your GX470! The average cost to replace a timing belt on a Lexus GX470 is between 500 and 700. Most vehicles do not need a special serpentine belt tool, but rather a 1/2" breaker bar and a socket on the serpentine belt tensioner to relieve the tension from the belt. Depending on your engine, the serpentine belt replacement cost is between $100 and $200. Worn serpentine belt noise in a GX470 can indicate impending problems if ignored, while typically being fairly cheap and easy to replace. The video above shows how to check the serpentine belt on your 2007 Lexus GX470 - if it gives more than a half inch when pressed, is cracked, frayed or appears shiny, you should change it (or have it changed) immediately. ![]()
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