08-19-2025, 12:23 AM
Background on International 175B Track Loader
The International 175B is a classic track loader introduced in the 1970s, powered by a heavy-duty diesel engine known for its reliability and durability in construction and earthmoving applications. The 175B features a track system designed to provide traction and movement control on varied terrain.
Track Adjuster Seal and Sprocket Concerns
Owners of vintage 175B loaders frequently face issues related to the track adjuster seal failing, leading to loss of hydraulic pressure in the track adjustment system, causing track slippage or loosening. Replacement of the track adjuster seal is crucial to restore proper tension and machine operation.
Sprockets on the 175B are integral to the undercarriage, engaging with the track links to propel the loader. A worn or damaged sprocket introduces further track tension issues, contributing to slippage and accelerated wear on the tracks.
Compatibility of Sprockets with Other Models
Many operators seek to replace 175B sprockets using parts designed for other similar machines like the Dresser 175C or the International TD15. Key points to consider:
Track adjuster seals are model-specific components designed to maintain hydraulic pressure inside the track tensioning cylinder. Using incompatible seals can lead to leaks and compromised track tension, defeating the purpose of the repair.
Recommendations for Replacement Parts
An owner of a 1979 International 175B found that after replacing the track adjuster seal, the track still slipped. After investigation, it was discovered that the sprocket was mismatched from a 175C loader with a slightly different pitch, causing improper engagement. Ordering the correct 175B sprocket resolved the problem, restoring reliable track tension and smooth loader operation.
Conclusion
The International 175B sprocket is generally specific to its model, and while lookalikes from the 175C and TD15 may seem similar, careful verification of pitch, bolt size, and dimensions is essential before substitution. For effective repair of track slippage issues, using correct track adjuster seals and properly matching sprockets is crucial to maintain equipment performance and longevity.
The International 175B is a classic track loader introduced in the 1970s, powered by a heavy-duty diesel engine known for its reliability and durability in construction and earthmoving applications. The 175B features a track system designed to provide traction and movement control on varied terrain.
Track Adjuster Seal and Sprocket Concerns
Owners of vintage 175B loaders frequently face issues related to the track adjuster seal failing, leading to loss of hydraulic pressure in the track adjustment system, causing track slippage or loosening. Replacement of the track adjuster seal is crucial to restore proper tension and machine operation.
Sprockets on the 175B are integral to the undercarriage, engaging with the track links to propel the loader. A worn or damaged sprocket introduces further track tension issues, contributing to slippage and accelerated wear on the tracks.
Compatibility of Sprockets with Other Models
Many operators seek to replace 175B sprockets using parts designed for other similar machines like the Dresser 175C or the International TD15. Key points to consider:
- The 175B, 175C, and TD15 loaders share similar undercarriage architectures; all have 39-link tracks.
- Despite similarities, the sprockets have differences in pitch (distance between teeth), bolt patterns, and physical dimensions. For example, earlier 175B sprockets have a 7-inch pitch, while some later 175B models and 175C versions use 7.5-inch pitch sprockets.
- Bolt sizes for sprocket mounting vary; 175B models tend to use smaller bolts (typically 5/8 inch), while 175C units and later 175B models may have larger bolts (7/8 inch).
- Sprockets from the Dresser 175C or TD15 may physically fit but could cause compatibility issues with track engagement, leading to premature wear or poor tracking.
- It’s essential to verify sprocket part numbers and dimensions before attempting interchange.
Track adjuster seals are model-specific components designed to maintain hydraulic pressure inside the track tensioning cylinder. Using incompatible seals can lead to leaks and compromised track tension, defeating the purpose of the repair.
Recommendations for Replacement Parts
- Source sprockets and seals specifically listed for the International 175B to ensure proper fit and performance.
- Consult parts manuals or trusted suppliers who specialize in vintage International Harvester or Dresser equipment replacements.
- Consider refurbishing or rebuilding the track adjuster assembly if multiple components show wear.
- If sourcing original parts proves difficult, aftermarket suppliers sometimes offer compatible replacements designed for 175B specifications.
- Regularly inspect sprockets for wear patterns such as tooth rounding or broken teeth.
- Maintain proper track tension via the adjuster to prevent slippage and reduce strain on sprockets and links.
- Lubricate and clean the undercarriage frequently to minimize abrasive damage.
- Replace sprockets and tracks in pairs or sets to ensure uniform wear and prevent uneven tension.
- Pitch: The distance between the centers of adjacent sprocket teeth, crucial for matching to track links.
- Track Adjuster: A hydraulic or mechanical device that maintains track tension.
- Sprocket Bolt Pattern: The size and spacing of bolts that secure the sprocket to the drive wheel.
- Track Link: Individual segments making up the track chain engaged by the sprocket teeth.
An owner of a 1979 International 175B found that after replacing the track adjuster seal, the track still slipped. After investigation, it was discovered that the sprocket was mismatched from a 175C loader with a slightly different pitch, causing improper engagement. Ordering the correct 175B sprocket resolved the problem, restoring reliable track tension and smooth loader operation.
Conclusion
The International 175B sprocket is generally specific to its model, and while lookalikes from the 175C and TD15 may seem similar, careful verification of pitch, bolt size, and dimensions is essential before substitution. For effective repair of track slippage issues, using correct track adjuster seals and properly matching sprockets is crucial to maintain equipment performance and longevity.
