New Holland Crawler Dozer D125C Tier 2 Service Manual PDF

This Service Manual contains instructions for repair and maintenance, detailed diagrams and charts, installation instructions, description of all procedures for New Holland Crawler Dozers D125C Tier 2. All repair and maintenance work listed in this manual must be carried out only by qualified dealership personnel, strictly complying with the instructions given, and using, whenever possible, the special tools.

The illustrations used in this manual are intended to give an example of a problem and to show what to look for and where the problem can be found. Some of the illustrations are generic and might not look exactly like the equipment or parts used in your application. The illustrations may contain symbols to indicate an action required and an acceptable or not acceptable condition.

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PIN NHC104500 and above
Part number 48080036

Models covered:
D125C Power Angle Tilt (PAT) Blade, Long Track (LT) - Tier 2 [NHC104500 - ]
D125C Power Angle Tilt (PAT) Blade, Wide Track (WT) - Tier 2 [NHC104500 - ]

CONTENTS:

• INTRODUCTION
• Engine
  • [10.001] Engine and crankcase
  • [10.202] Air cleaners and lines
  • [10.206] Fuel filters
  • [10.304] Engine lubrication system
  • [10.310] Aftercooler
  • [10.400] Engine cooling system
  • [10.414] Fan and drive
• Hydrostatic drive
  • [29.218] Pump and motor components
• Brakes and controls
  • [33.110] Parking brake or parking lock
  • [33.202] Hydraulic service brakes
• Hydraulic systems
  • [35.000] Hydraulic systems
  • [35.300] Reservoir, cooler, and filters
  • [35.104] Fixed displacement pump
  • [35.105] Charge pump
  • [35.359] Main control valve
  • [35.741] Dozer blade cylinders
• Tracks and track suspension
  • [48.130] Track frame and driving wheels
  • [48.100] Tracks
  • [48.134] Track tension units
  • [48.138] Track rollers
  • [48.140] Dropbox and final drive
  • [48.AAA] Tracks and track suspension generic sub-group
• Cab climate control
  • [50.100] Heating
  • [50.104] Ventilation
  • [50.200] Air conditioning
• Electrical systems
  • [55.000] Electrical system
  • [55.011] Fuel tank system
  • [55.014] Engine intake and exhaust system
  • [55.015] Engine control system
  • [55.030] Service brake electrical system
  • [55.050] Heating, Ventilation, and Air-Conditioning (HVAC) control system
  • [55.100] Harnesses and connectors
  • [55.201] Engine starting system
  • [55.202] Cold start aid
  • [55.301] Alternator
  • [55.302] Battery
  • [55.408] Warning indicators, alarms, and instruments
  • [55.512] Cab controls
  • [55.518] Wiper and washer system
  • [55.DTC] FAULT CODES
• The dozer blade and arm
  • [86.110] Dozer blade
  • [86.124] Dozer push beams and struts
• Platform, cab, bodywork, and decals
  • [90.160] Cab interior trim and panels
  • [90.120] Mechanically-adjusted operator seat
  • [90.124] Pneumatically-adjusted operator seat
  • [90.100] Engine hood and panels