Takeuchi TL150 Window Gas Spring Failures and Retrofit Solutions

[MikePhua]

A Compact Track Loader with a Persistent Cab Flaw
The Takeuchi TL150, introduced in the early 2000s, is a high-performance compact track loader known for its robust undercarriage, powerful breakout force, and operator-friendly cab. With an operating weight of approximately 10,000 lbs and a rated operating capacity of 3,000 lbs, it was designed for demanding applications in construction, demolition, and site prep. Takeuchi, a Japanese manufacturer founded in 1963, pioneered the compact track loader concept and has sold tens of thousands of TL-series machines globally.
Despite its mechanical strengths, the TL150 has a recurring issue with the gas-assist springs that support the front cab window. These springs are intended to hold the window in the open position, allowing ventilation and improved visibility. However, many owners report that replacement gas springs—often ordered under part number 0880865124—arrive with insufficient pressure, rendering them ineffective or even counterproductive.
Symptoms of Defective Gas Springs
Operators have identified several consistent symptoms when installing new gas springs:

• The springs can be compressed by hand, indicating low internal pressure
  
• They fail to assist in lifting the window and instead resist upward motion
  
• The window does not latch in the overhead position due to sluggish travel
  
• The springs exert closing force rather than opening support, estimated at only 15 lbs when 40–50 lbs is expected
  

These symptoms suggest a manufacturing defect or a mismatch in pressure rating. The springs in question are often stamped with a code such as 7X90, but no clear pressure specification is provided by the manufacturer (KYB) or Takeuchi.
Dealer Response and Field Workarounds
When contacted, Takeuchi support centers have sometimes dismissed the issue, arguing that multiple springs from different batches cannot all be defective. However, field experience contradicts this. One operator received six new springs from different date codes, all of which failed to perform adequately.
In response, some owners have pursued alternative solutions:

• Re-gassing the original springs: This involves refilling the nitrogen charge at a specialty shop. While effective, it requires access to a facility with the proper equipment and fittings.
  
• Sourcing automotive-grade gas struts: Stores like NAPA carry gas springs of various lengths and pressures. If the mounting eyelets and stroke match, these can serve as drop-in replacements.
  
• Operating without springs: Ironically, some users report that the window functions better with no springs at all, relying on manual lifting and a latch to hold it open.
  

Recommendations for Replacement
When sourcing replacement gas springs:

• Measure the extended and compressed length of the original unit
  
• Confirm the mounting style (ball stud, clevis, or threaded)
  
• Estimate the required force rating based on window weight and leverage
  
• Choose a spring with a slow extension rate to prevent sudden opening
  

A typical TL150 window may require a gas spring rated between 40–60 lbs of force, depending on wear and hinge friction.
Conclusion
The Takeuchi TL150 remains a respected machine in the compact loader market, but its cab window gas spring system is a weak point. With OEM replacements often underperforming, operators must turn to re-gassing services or aftermarket alternatives. By carefully matching dimensions and pressure ratings, it’s possible to restore proper window function and improve operator comfort—without relying on inconsistent factory parts.
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