1/2-20x1 1/2
M14x1.5
Remove the belt. Remove the bolt that attaches the harmonic balancer. Rent or purchase a harmonic balancer puller. Follow the Instructions with the puller and remove the old balancer. Install the new balancer making sure to line up the keyway, a little oil helps. Put the retaining bolt back in and tighten to manufacture specs.
Easiest way is with an air impact. There are strap clamps available that would go around the harmonic balancer that would hold it while the bolt was tightened.
The torque specification, for the harmonic balancer on your 350 cubic inch engine, is 280 pounds per square inch. The torque specification may vary according to the manufacturer of the engine.
The engine has a harmonic balancer on it, but if it is off, it is easy to re-install. Simply line up the key and tap it on most of the way and torque down the center bolt.
The harmonic balancer on a 1990 Toyota 4 Runner is turned clockwise to loosen it. This is backwards from most bolts to prevent it from being loosened by the rotation of the engine.
loosen the center bolt and get your self a harmonic balancer puller just make sure you loosen the center bolt enough but not too much but you need a balancer puller.
The big bolt that holds it on must have came out of the crank.
You turn it counter clockwise to loosen.
yes
The flywheel has to be held in place by a holding tool, Remove the mounting bolt, then use a balancer remover to pull the harmonic balancer.
the harmonic balancer is the crankshaft pulley approx6 or 7 inch diameter lower pully center of engine the serp belt is driven by power pulley also have a retaining bolt in center