The Atlas ATEATTC-LHA is a pneumatic left-hand assist arm that bolts onto the column of Atlas 200 Series and 700 Series tire changers, adding the tooling needed to handle stiff sidewall, run-flat, and low-profile tires that a standard changer can't manage cleanly with leverage alone. It adds two working heads: a bead lifting disc that pushes the lower bead up into the wheel cavity during demounting, and a bead pressing block that holds the upper bead seated below the rim edge during the rotation pass. Both heads apply consistent pneumatic force rather than manual leverage — the difference that prevents the rim contact and technician strain that come with forcing a resistant bead by hand.

The LHA is the right upgrade for Atlas 200 or 700 Series owners whose changer is mechanically sound but increasingly underpowered for the run-flat and low-profile fitments that now make up a growing share of the vehicle mix. Adding the assist arm extends the machine's capability without a full changer replacement. For shops that need both sides covered, the LHA pairs with the Atlas ATEATTC-RHA right-hand assist arm to form a complete dual assist arm setup.

Features

• Pneumatic left-hand assist arm for controlled, effortless tire handling
• Compatible with Atlas 200 Series and Atlas 700 Series tire changers
• Bead lifting disc included
• Bead pressing block included
• Designed for run-flat and low-profile tires
• Reduces rim damage and technician strain when working with stiff sidewall tires
• Shipping weight: 160 lbs

Bead Lifting Disc

The lifting disc presses up against the lower sidewall, applying controlled pneumatic pressure that forces the lower bead up into the wheel cavity so the tire can release on a tough demount. Without it, a stiff-sidewall or low-profile tire often locks the bead against the drop center and refuses to walk off the rim.

Bead Pressing Block

The pressing block applies controlled downward pressure on the upper sidewall, keeping the bead seated below the rim edge as the wheel rotates against the mount/demount head. The block geometry is shaped to ride on the tire shoulder rather than the alloy.

Specifications

Shipping & Logistics

The assist arm ships via freight in a wood crate measuring 40" × 14 3/8" × 12" at 160 lbs.

Documents

• Atlas LHA Assist Arm Manual
• Atlas LHA Assist Arm Assembly Guide