579.Ot7368 | OTC Tool Torque Multiplier 2200lb OTC

• 3/4in Drive Input 730 ft/lbs Max
• 1" Drive Output 2200 ft/lbs Max
• Head Width 3.6in, 3.3:1 Ratio
• Reaction Bar 15.625in
• Frictional Gear Loss 6 Per Cent

• Increase torque output
  • Multiplies the torque applied by the user through an internal planetary gear system.
  • Makes it possible to achieve very high torque with a standard hand wrench.

• Loosen stubborn fasteners
  • Removes rusted, seized, or over-tightened nuts and bolts that would be difficult to loosen with ordinary tools.
• Accurately tighten fasteners
  • Helps achieve manufacturer-specified torque values for critical components such as:
    • Wheel lug nuts
    • Axle nuts
    • Hub bearings
    • Suspension fasteners
    • Industrial flange bolts
• Reduce operator effort
  • Requires much less physical force than using a long breaker bar or "cheater pipe."
  • Improves safety by reducing the risk of slips and overexertion.
• Protect fasteners and components
  • Delivers controlled torque, reducing the risk of over-tightening or damaging threads compared with using a high-powered impact wrench.

1. Excessive gear noise

• Grinding
• Clicking
• Popping
• Knocking

A healthy torque multiplier should operate smoothly with only normal gear noise. Loud or unusual sounds can indicate worn or damaged internal gears or bearings.

2. Slipping under load

• The input wrench turns, but the output drive doesn't deliver the expected torque.
• The tool may feel like it's "skipping."

This often points to worn or broken gear teeth.

3. Difficult to turn

• Requires much more effort than usual.
• Feels rough or binds during operation.

Possible causes include damaged bearings, lack of lubrication, or internal gear damage.

4. Inaccurate torque output

• Fasteners are consistently under-tightened or over-tightened despite using the correct input torque.
• This may result from internal wear that changes the gear ratio's effective performance or excessive internal friction.

5. Excessive backlash

• Noticeable free play between the input and output drives.
• A large amount of movement before torque is transmitted.

Some backlash is normal, but excessive play may indicate worn gears or bearings.

6. Oil or grease leaks

• Lubricant leaking from seals or the gearbox.
• Low lubricant levels can accelerate wear and lead to overheating.

7. Cracked or damaged housing

• Visible cracks or dents.
• Damage around the reaction arm or drive square.

Structural damage can make the tool unsafe to use under high loads.

8. Worn drive squares

• Rounded or deformed input/output square drives.
• Sockets fit loosely or slip during use.

This can damage both the tool and the socket.

9. Bent or damaged reaction arm

The reaction arm prevents the housing from rotating under load. If it is:

• Bent
• Cracked
• Loose

the tool may not operate safely and could slip during use.