Dresta Dresser 175C Crawler Loader – Pre-Purchase Insights

[MikePhua]

Background and Evolution
The Dresser 175C is the final iteration of a lineage that began with International Harvester’s model 175 track-type loader in the early 1960s. The original models, derived from the TD-15B dozer, featured integrated loader towers, planetary final drives, and Z-bar linkage—offering impressive breakout force and visibility advantages. The 175C, introduced in 1972 under Dresser branding, upgraded to a turbocharged DT-466 engine producing approximately 140 flywheel hp. Total production of the lineage exceeded 13,000 units, and it found popularity in demanding sectors like logging and demolition .
Key Specifications

• Engine & Powertrain
  • Engine: International DT-466B, turbocharged 6-cylinder diesel (~466 cu in / 7.6 L), ~150 hp .
    
  • Transmission: Powershift with torque converter; 3 forward and 3 reverse ranges, top speed around 6.4 mph .
    
• Hydraulic System
  • Open-center system with dual gear pumps delivering about 30 GPM.
    
  • Relief valve set to approximately 2,500 psi.
    
  • Pilot-operated lever controls, with provisions for auxiliary valves .
    
• Loader Performance
  • Operating weight: roughly 38,000 lbs.
    
  • Bucket capacity: between 2.5 to 3.0 cubic yards.
    
  • Breakout force exceeding 21,000 lbs.
    
  • Track gauge ~70 in, ground clearance ~16 in, cab height around 122 in .
    
• Maintenance Focus
  • Key service items include hydraulic filters, transmission fluid, and undercarriage components.
    
  • Common wear areas: hydraulic pump (whine, pressure drop), transmission (clutch packs, overheating), pins/bushings in the loader linkage .
    

Pre-Purchase Evaluation Checklist
From discussions among users, several real-world concerns emerge:

• Structural Integrity: ROPS that appear pushed or bent may indicate prior impact. Examine for frame misalignment or signs of collision damage .
  
• Protective Components Missing: Absent engine shields or broken grill sections risk damage to vital systems like the oil cooler. Verify all guards are present and intact .
  
• Undercarriage Wear: Rusted or worn track rails, loose rollers, and worn pins can mean significant rebuilding cost. Look for good “meat” on rails and roller spacing .
  
• Hr Meter Reliability: Be wary of low-hour machines, especially those used in high-demand environments like coal pits—hour meters may not reflect actual usage .
  

Quick Recap of Specifications

• Engine: DT-466B, ~150 hp
  
• Transmission: Powershift, 3 F/3 R, ~6.4 mph
  
• Hydraulics: ~30 GPM, 2,500 psi
  
• Weight: ~38,000 lbs
  
• Bucket: 2.5–3 yd³; Breakout: >21,000 lbs
  
• Undercarriage: 70 in gauge, 16 in clearance
  

Decision-Making Tips

• Get Real Access: Request close-up photos or video of the engine bay, undercarriage, loader pins, and cab.
  
• Confirm Year via VIN/Serial: That tag helps match parts and model year accurately .
  
• Inspect Hydraulics: Pump noise, sluggish response, or steady pressure loss suggest rebuild needs.
  
• Plan for Undercarriage Refurb: Track components can be a major cost—budget accordingly.
  
• Maintenance Records Matter: Units with documented oil change, undercarriage repair, or transmission service histories are more valuable.
  

Conclusion
The Dresser 175C is a robust, high-capacity crawler loader with roots in a well-regarded IH lineage. It offers power, durability, and stands up well to tough environments. However, its age means diligent inspection is critical before buying. Confirm structural soundness, undercarriage condition, and genuine usage levels. When well-maintained, a 175C can deliver long-lasting, dependable performance on demanding jobsites.