Replacing the Seat on a Bobcat 873 Is Easier Than You Think

[MikePhua]

The Bobcat 873 and Its Operator Environment
The Bobcat 873 skid-steer loader was introduced in the late 1990s as part of Bobcat’s G-series lineup, designed to offer higher lift capacity and improved hydraulic performance for demanding construction and agricultural tasks. With a rated operating capacity of 2,100 lbs and a 73 hp Deutz diesel engine, the 873 quickly became a favorite among contractors and rental fleets. Its vertical lift path made it ideal for loading trucks and handling palletized materials.
One of the most overlooked components in daily operation is the operator’s seat. Over time, the original seat can degrade due to exposure, vibration, and wear. Cracked vinyl, collapsed foam, and broken slide rails not only reduce comfort but can also affect safety and control. Fortunately, replacing the seat on a Bobcat 873 is a straightforward task that can be completed with basic tools and a little patience.
Terminology Notes

• Slide rails: Metal tracks that allow the seat to move forward and backward for operator adjustment.
  
• Seat switch: A safety sensor embedded in the seat base that detects operator presence and enables hydraulic functions.
  
• Mounting bracket: The steel frame that secures the seat to the loader’s cab floor.
  
• Bolt pattern: The arrangement of holes used to fasten the seat to its base, which must match the replacement seat.
  

Preparation and Safety Steps
Before beginning the replacement, follow these steps:

• Park the machine on level ground and lower the lift arms
  
• Disconnect the battery to prevent accidental activation of controls
  
• Remove any debris or tools from the cab area
  
• Wear gloves and eye protection if using power tools
  

The seat is typically mounted with four bolts, and may include a wiring harness for the seat switch. If the switch is bypassed or damaged, it should be replaced or properly reconnected during installation.
Removal Procedure
To remove the old seat:

• Locate the mounting bolts at the corners of the seat base
  
• Use a socket wrench or impact driver to loosen and remove the bolts
  
• Disconnect the seat switch wiring harness, noting its orientation
  
• Slide the seat off the rails or lift it free from the bracket
  

If the bolts are rusted or seized, apply penetrating oil and allow time to soak. In extreme cases, bolts may need to be cut and replaced. Inspect the mounting bracket and rails for cracks or deformation before installing the new seat.
Choosing a Replacement Seat
Replacement seats for the Bobcat 873 are widely available through OEM dealers and aftermarket suppliers. Key considerations include:

• Matching bolt pattern (typically 11.25" x 11.5")
  
• Compatibility with seat switch wiring
  
• Suspension type (mechanical or air)
  
• Vinyl or cloth upholstery depending on climate and usage
  
• Armrest and lumbar support options for operator comfort
  

Some operators upgrade to suspension seats for improved ride quality, especially in rough terrain or long shifts. These seats use springs or air bladders to absorb vibration and reduce fatigue.
Installation Tips
To install the new seat:

• Align the bolt holes with the mounting bracket
  
• Insert and tighten bolts evenly to avoid misalignment
  
• Reconnect the seat switch harness securely
  
• Test seat movement and switch function before reconnecting the battery
  

If the new seat lacks a compatible switch, a bypass jumper may be used temporarily, but this disables a key safety feature. For best results, install a switch that matches the original design or retrofit a universal sensor.
A Story from the Midwest
In 2017, a landscaping crew in Illinois replaced the seat on their aging Bobcat 873 after the vinyl split and the foam collapsed. The operator had been experiencing back pain and difficulty reaching the controls. After installing a suspension seat with adjustable lumbar support, productivity improved and the operator reported less fatigue. The crew noted that the installation took under an hour and cost less than $300, making it one of the most cost-effective upgrades they had performed.
Maintenance and Longevity
To extend the life of the new seat:

• Clean regularly with mild soap and water
  
• Avoid leaving the cab open during rain or snow
  
• Inspect mounting bolts annually for loosening
  
• Lubricate slide rails with silicone spray
  
• Check seat switch function during routine service
  

Seats are subject to wear from vibration, UV exposure, and operator movement. Investing in a seat cover or cab enclosure can further protect the upholstery and foam.
Final Thoughts
Replacing the seat on a Bobcat 873 is a practical upgrade that improves comfort, safety, and control. Whether restoring an older machine or customizing for a new operator, the process is simple and rewarding. With the right tools and attention to detail, even a novice technician can complete the job and enjoy the benefits immediately. In a machine built to work hard, the seat is where productivity begins.