Quick Answer

Question: How much torque does a harmonic balancer need?

Smaller Chevy models should have the harmonic damper bolt set to 60 foot-pounds. Larger Chevy vehicles should have a torque of 85 foot-pounds. Hemi426, smaller Chrysler and larger Chrysler motors should have a harmonic damper bolt set to 135 food-pounds.

How do you torque down a harmonic balancer?

Torque Crank Bolt/Harmonic Balancer No Special Tool

Do you have to torque a harmonic balancer?

The only way to tighten the harmonic balancer bolt properly is to lock the motor up somehow and tighten it with a torque wrench to the correct tension. Which means usually wedging the flywheel some way. Or you could just use a impact wrench (rattle gun) and tighten it up really tight if you want the easy way out.

What are the torque specs for a 5.9 Cummins?

Cylinder Head Torque Settings

For the Cummins 5.9-liter engines made between 1983 and 1989, the bolts in the cylinder head must be tightened to 89 foot-pounds plus an extra 1/4 turn. For engines made between 1998 and 2003, the figure is 77 foot-pounds plus the extra 1/4 turn.

Can the harmonic balancer be too tight?

The balancer should not go on so tight as to break the bolt or one should not be so ham fisted as to break the bolt.

What is the torque spec for flywheel bolts?

Small Block Chevy Torque Specs

Fastener Type Torque Spec
Harmonic Damper Bolt 60 ft.-lbs.
Flywheel/Flexplate Bolts 65 ft.-lbs.
Pressure Plate Bolts 35 ft.-lbs.
Bellhousing Bolts 25 ft.-lbs.

How do you torque a crankshaft pulley bolt?

Torque Crankshaft Pulley Bolt | Harmonic Balancer Bolt

How do I know if my harmonic balancer is seated?

If you take out the bolt and look at the inside of the balancer hole the end of the crank should be flush with the machined area of the balancer where the bolt and washer tighten down. This is a small block Chevy, the end of the damper sits an inch or two past the end of the crank….

Can you over tighten a crankshaft bolt?

Over tightening a square taper can cause the crank arm to be deformed to the point where it will not stay tight, which is a bigger problem.

How do I stop my engine from turning off when I use the harmonic balancer?

Lock a pair of large vice grips onto the flywheel so it comes in contact with the bellhousing. This will usually stop the engine from turning over in order to manhandually break HB bolt(s) lose having very limited access..

How do I stop my crankshaft from turning?

How To Tighten or Remove Crank Bolt without Pulley Holder- Jonny DIY

How do you hold a harmonic balancer in place?

Use with a 1/2″ ratchet or breaker bar to hold the harmonic balancer in place when turning the bolt that holds the balancer to the crankshaft. Also use to hold the balancer when removing it from the engine.

What does a 12 valve Cummins weigh?

9 12 Valve Cummins Engine Weigh?

Engine: Cummins 6BT (commonly referred to as the “12 valve Cummins”)
Horsepower: 160 – 215 HP @ 2,500 RPM
Torque: 400 – 440 lb-ft @ 1,600 RPM
Governed Speed: ~ 2,700 RPM
Engine Weight: ~ 1,100 lbs, dry & dressed (~ 890 lbs dry, engine assembly only)

How much horsepower does a 2006 5.9 Cummins have?

Engine: 5.9-liter Cummins turbodiesel in-line 6 with 325 horsepower at 2,900 revolutions per minute and 610 foot-pounds of torque at 1,600 rpm.

How much horsepower does a Cummins 5.9 have?

By 2007, the 5.9 Cummins offers an impressive 325 horsepower and 610 lb-ft. A large part of the power improvements were due to the 4-valve per cylinder design and electronic engine management. *12v 5.9 Cummins are also known as the 6BT while 24v diesel engines are the ISB 5.9.

What happens if you over tighten a harmonic balancer?

An improperly tightened crank bolt on this engine has unpleasant conse- quences—comebacks, misfiring, confusing trou- ble codes and possible engine damage. The spec for the harmonic balancer bolt on this 3.4L V6 ranges from 184 ft. -lbs. to 217 ft.- lbs. That’s a considerable amount of torque in anyone’s book.

How do you calculate flywheel torque?

Tfw = m*r^2/2/a

  1. Where Tfw is the Flywheel Torque (N-m)
  2. m is the flywheel mass (kg)
  3. r is the radius (m)
  4. a is the angular acceleration (rad/s^2)

What is the torque pattern?

Torque pattern is the proper tightening sequence so the bolts are properly stretched and can evenly carry the load. Whether there are four bolts or 12, torque pattern allows you to scatter the load.

Are flywheel bolts torque to yield?

All of the documentation that I found indicated the flywheel bolts are torque to yield, and not reusable.

How much torque should a crank bolt have?

Crankset, Bottom Bracket and Pedal Area

Component Type/Brand Inch-Pounds
Crank bolt (including spline-type cranks and square-spindle cranks) Shimano® 305–391
Shimano® Octalink® XTR® (M15 thread) 357–435
Campagnolo® 282–336
Campagnolo® Ultra-Torque® 371

How do you torque a pulley?

2 Masses on a Pulley – Torque Demonstration

Which way does a crankshaft bolt loosen?

Place your socket on the crankshaft pulley bolt and wedge the end of your ratchet or breaker bar onto the ground. Make sure when the pulley starts to turn, the breaker bar is positioned to push the bolt counterclockwise to loosen it.

Do all engines have a harmonic balancer?

A common part found on all high-performance engines is a harmonic damper (or harmonic balancer, as they are often called). Found at the front of the engine attached to the snout of the crankshaft, harmonic dampers are used to quell the harmonics of the crankshaft.

How do you use a harmonic balancer?

How to Use a Harmonic Balancer Puller

  1. Slacken tension on the belts that surround the lower pulley of the engine.
  2. Remove the belt of each accessory from the lower pulley of the engine.
  3. Remove the retaining bolts that attach the lower pulley to the harmonic balancer.
  4. Remove the retaining bolt from the harmonic balancer.

What is a crankshaft pulley?

The crankshaft pulley (harmonic balancer) is mounted on the end of the crankshaft. Its purpose is to turn the drive belts that operate the engine accessories (alternator, air conditioning compressor, etc.)