Understanding and Maintaining the Telsta A28D Boom Slide Blocks

[MikePhua]

Introduction to the Telsta A28D
The Telsta A28D is a versatile aerial lift mounted on a 1997 Ford F-350 chassis, designed for utility work, tree trimming, and maintenance tasks. Its telescoping boom provides a working height of approximately 28 feet, making it suitable for various overhead applications. The boom's extension and retraction are facilitated by slide blocks that ensure smooth movement and structural integrity.
Function and Importance of Boom Slide Blocks
Boom slide blocks, also known as wear pads or guide blocks, are critical components that allow the inner boom to extend and retract within the outer boom. These blocks reduce friction, prevent metal-to-metal contact, and maintain alignment during boom operation. Regular inspection and maintenance of these slide blocks are essential to ensure the safe and efficient functioning of the aerial lift.
Common Issues with Boom Slide Blocks
Over time, boom slide blocks can experience wear, leading to several issues:

• Excessive Wear: Continuous operation can cause the slide blocks to wear down, leading to increased friction and potential misalignment.
  
• Damage or Cracking: Physical damage or cracking of the slide blocks can compromise the structural integrity of the boom.
  
• Dislodgement: Improper installation or lack of maintenance can result in slide blocks becoming dislodged, affecting the boom's operation.
  

Maintenance and Replacement
Regular maintenance is crucial to prolong the life of the boom slide blocks:

• Inspection: Periodically inspect the slide blocks for signs of wear, damage, or dislodgement.
  
• Lubrication: Apply appropriate lubricants to reduce friction and prevent premature wear.
  
• Replacement: If wear exceeds acceptable limits or if damage is observed, replace the slide blocks promptly.
  

According to the Telsta A28D Service Repair Manual, the extension cylinder rod end attachment bolt should be coated with "Never Seize" or an equivalent lubricant and torqued to 75 ft-lbs during reassembly.
Acquiring Replacement Parts
Replacement parts for the Telsta A28D, including boom slide blocks, can be sourced from various suppliers:

• Al Asher & Sons: Offers a range of Telsta boom sections and accessories.
  
• Versalift Parts Store: Provides adjustable slide pads and wear pads suitable for similar models.
  

Conclusion
The boom slide blocks of the Telsta A28D are vital for the safe and efficient operation of the aerial lift. Regular maintenance, timely replacement of worn or damaged components, and sourcing quality replacement parts are essential practices to ensure the longevity and reliability of the equipment. By adhering to these guidelines, operators can maintain optimal performance and safety standards.