Lifting Equipment

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Lifting Equipment

• Harkness Career Center

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Lift Types

• Frame-contact lift

• Wheel-contact (drive-on) lift

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Frame-Contact Lifts Two post lift

• Uses air or hydraulic pressure to raise vehicle
• Mechanical locks protect against hydraulic
  failure
• Adapters at the end of adjustable lift arms

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• Lift adapters contact vehicle frame at specified
  lift points
• Unitized body
• -pads contact the pinch welds and the torque
  boxes
• Straight frame
• -Pads contact the frame directly

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• Some adapters adjust to several positions

• Lift Pads should
• Be apposing each
• other

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Frame-Contact Lifts

• Symmetrical Lift the arms on the lift are the
  same length.
• Asymmetrical Lift - the arms on the lift are two
  different lengths.

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Wheel-contact Lifts
Types
four post
scissor types
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Wheel-contact Lifts

• All four wheels supported
• Also has mechanical locks
• Works well for hard to lift vehicles

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Wheel-Free Jacks

• Are located in the middle
• of the drive on lift

• Are used to raise
• vehicles off there
• wheels

• Have mechanical
• safety locks

• Operate on air and/or
• Hydraulic pressure

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Wheel-Free Jacks

• Picks up one end or both ends of the vehicle
• Advantages of wheel contact lifts
• Picks up off balanced vehicles safely
• Center of underside is accessible
• Adjusts to pick up different undercarriage
  designs
• Can be rolled along drive-on ramps

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In-Ground Lifts

• In-ground, frame-contact lifts are either single
  post or two post
• Two-posts provide better vehicle access
• Has safety locks
• Are getting more popular
• Do not pollute like they used to (hydraulic fluid
  leakage)
• No posts in the way
• Easier to get in and out of the car

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Lift Safety

• When a vehicle falls off a lift, usually due to
  carelessness, misuse, neglected maintenance

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Lift Safety cont.

• Pinch Points
• Between the lift and the vehicle
• Inside the lift posts
• Hands must be on the operating handles when
  operating
• NO ONE should be touching the lift when in use

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Lift safety cont.

• Rear-wheel-drive cars center of gravity is below
  the drivers seat
• Front-wheel-drive cars center of gravity beneath
  the steering wheel
• One- or two-post lifts, position vehicles center
  of gravity over the posts
• Four-post models, position car between front and
  rear

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Lift safety cont.

• Rear-wheel-drive cars center of gravity is below
  the drivers seat
• Front-wheel-drive cars center of gravity beneath
  the steering wheel
• One- or two-post lifts, position vehicles center
  of gravity over the posts
• Four-post models, position car between front and
  rear

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Lift safety cont.

• Never exceed the manufacturers Maximum Capacity
  posted on the lift.

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