The next time you utilize a drive belt, timing belt, or timing chain, you’ll likely need to loosen a tensioner pulley to eliminate it. Following these general suggestions and specific guidelines from your owners manual or repair manual, your belt or chain will function for the life of your car.
Toyota and various other timing belt tensioners are loosened by simply removing them from the engine. You need to gradually compress them in a bench vice and lock them with a pull-pin before reinstallation.
Hydraulic (not hydraulic-damped) tensioners are Car Pulley Belt almost always located in the timing case, mostly on automobiles with timing chains, though some are used in combination with timing belts. Hydraulic tensioners are run by oil pressure from the engine essential oil pump and could press on a tensioner pulley (timing belts) or pressure slipper (timing chain). You will likely need the year, make, and model information, and you may have to use special equipment for this kind of tensioner pulley.
Typically, a hydraulic tensioner must be “reset” and locked after removing it from the engine. Take away the lock only after the tensioner, pulley, or slipper, and timing belt or timing chain are installed and aligned.
The spring maintains tension, as the hydraulic damper keeps it from bouncing under load changes. This prevents timing belts and timing chains slapping and jumping tooth and maintains drive belts from slipping and producing sound. To loosen a drive belt spring tensioner pulley, refer initial to the repair manual or owners manual’s specific 12 months, make, and model information.
You might need a special tool, but many spring tensioners have a square hole, for a 3/8” or 1/2” breaker bar, or a hex or square protrusion for a wrench or socket. Using the appropriate tool, release pressure on the belt. You will have to hold some spring tensioners while slipping on a new belt. Others may possess a locking mechanism, such as a hole for a locking pin or hex important.
To loosen an NAI tensioner, loosen the locking nut or bolt, after that cool off the tensioner screw. Push the pulley toward the other pulleys or add-ons, loosening the belt.
Spring tensioner pulleys, as the name implies, use a spring to hold tension upon the belt. Most, if not absolutely all, spring tensioner pulleys are NAI tensioners you need to include a hydraulic damper. They are more complex and expensive but don’t require modifications and are less prone to user error.