John Deere 755K Crawler Loader – Heavy-Duty Hydrostatic Track Loader

Description:

The John Deere 755K Crawler Loader, introduced in the mid-2010s, is a production-class hydrostatic track loader built for high-volume earthmoving and demolition. With a 190 HP Tier 4 Final turbo diesel engine, dual-path hydrostatic drive, and a 4.25 cubic yard bucket, the 755K delivers powerful breakout force, exceptional stability, and all-day operator comfort.

Key Specifications:

• Engine:
  John Deere PowerTech™ 6.8L Tier 4 Final turbocharged diesel

• Horsepower:
  ~190 HP (net)

• Transmission:
  Twin-path Hydrostatic (HST), infinite speed control

• Hydraulics:
  Load-sensing, ~49 GPM flow

• Operating Weight:
  ~47,000 lbs

• Bucket Capacity:
  4.25 cubic yards (GP bucket standard)

• Undercarriage:
  Sealed & Lubricated (SALT), 7 bottom rollers per side

• Loader Controls:
  Pilot joystick with EH (electrohydraulic) control

Serial Number Info:

• Production Start: ~2014

• Serial Number Location:
  On the left side of the machine frame, near the loader arm pivot or under the cab access panel. Always verify before ordering parts.

Key Features:

• ✅ Tier 4 Final PowerTech Engine:
  Delivers high torque and fuel efficiency without sacrificing power.

• ✅ Massive Bucket Capacity:
  The 4.25 yd³ bucket moves more material per pass — perfect for mass excavation.

• ✅ Smart Hydrostatic Drive:
  Twin-path system offers smooth, responsive control in demanding environments.

• ✅ Built for Operator Comfort:
  Pressurized cab with climate control, adjustable suspension seat, and intuitive touchscreen monitor.

• ✅ Heavy-Duty Undercarriage:
  Designed for severe duty applications with reinforced track components and extended life rollers.

Common Replacement Parts:

Available now at Broken Tractor

• Engine Parts: Turbochargers, fuel pumps, sensors, filters, injectors

• HST Drive Components: Hydrostatic pumps, motors, pressure relief valves, control units

• Hydraulics: Loader lift and tilt cylinders, joystick valves, hoses, seal kits

• Undercarriage: Track chains, sprockets, rollers, recoil springs, idlers

• Bucket & Loader Frame: Pins, bushings, cutting edges, wear plates

• Electronics: Monitor displays, EH controls, wiring harnesses, grade control sensors

Maintenance Schedule:

• Engine Oil & Filter: Every 250 hours

• Fuel Filters: Every 250 hours

• Hydraulic/HST Fluid: Every 500 hours

• Coolant Flush: Every 1,000 hours

• Grease Loader Linkage & Undercarriage: Weekly

• Electronic System Check (via JDLink™): As needed

Common Issues & Fixes:

• HST Slipping or Hesitation:
  Indicates worn hydrostatic pump/motor — replace with HST components

• Bucket Drift or Weak Lift:
  Caused by worn hydraulic seals — fix with hydraulic cylinder seal kits

• Undercarriage Wear or Track Slack:
  Rebuild with undercarriage kits for extended service life

• Sensor Failures or Error Codes:
  Check monitor system and replace faulty electrical components