New Holland Boomer 40, 50 Tractor Service Manual – Tier 3, NA


Covers: New Holland Boomer 40, 50 tractors

  • North America
  • Tier 3 engine
  • Please contact us with serial number to verify compatibility

Type: Service Manual
Language: English
Pages: 1,453
Format: PDF
File size: 144mb
Features: Bookmarked, searchable, printable
Compatibility: Windows/Mac/Tablet/Mobile

Latest edition dated 2016. This downloadable service manual contains the necessary information for servicing and troubleshooting of New Holland Boomer 40 and 50 tractors (tier 3, North America). In this manual you will find detailed specifications, torque specs, illustrations, diagrams and step-by-step procedures to properly service the tractor to the manufacturer’s standards. Over 1,400 pages of detailed OEM service information. View this PDF manual on your computer, tablet or phone, or print off pages as needed.

Two manuals included – tractor service manual and engine service manual.



2.5L Engine

  • Engine removal and installation
  • Engine and crankcase
  • Cylinder heads
  • Pan and covers
  • Crankshaft and flywheel
  • Connecting rods and pistons
  • Valve drive and gears
  • Balancer and damper
  • Fuel filters
  • Fuel injection system
  • Intake and exhaust manifolds and muffler
  • Engine lubrication system
  • Engine cooling system
  • Engine starting system
  • Cold start aid
  • Alternator


  • Clutch mechanical release control
  • Clutch and components
  • Slip clutch or flywheel damper


  • Mechanical transmission and internal components

Powered front axle

  • Front bevel gear set and differential
  • Final drive hub, steering knuckles, and shafts
  • Final drives

Rear axle

  • Rear bevel gear set and differential
  • Planetary and final drives

Hydrostatic drive

  • Transmission and steering hydrostatic control
  • Hydrostatic transmission
  • Pump and motor components

Power Take-Off (PTO)

  • Rear mechanical control
  • Rear electro-hydraulic control
  • One-speed rear Power Take-Off (PTO)
  • Central Power Take-Off (PTO)

Brakes and controls

  • Parking brake or parking lock
  • Mechanical service brakes

Hydraulic system

  • Hydraulic system technical information and schematics
  • Fixed displacement pump
  • Hitch control valve
  • Three-point hitch cylinder
  • Remote control valves
  • Reservoir, cooler, and filters
  • Main relief valve
  • Joystick

Drawbars and towing hitches


  • Steering control
  • Tie rods
  • Hydraulic control components
  • Steering cylinder


Electrical systems

  • Electrical system overview
  • Wiring diagram
  • Fuel injection system
  • Fuel tank system
  • Engine cooling system
  • Engine oil system
  • Parking brake electrical system
  • Rear Power Take-Off (PTO) control system
  • Harnesses and connectors
  • Engine starting system
  • Cold start aid
  • Battery
  • External lighting
  • External lighting switches and relays
  • Warning indicators, alarms, and instruments
  • Cab engine controls
  • Ground speed control
  • Electronic modules

Platform, cab and bodywork

  • Hood and fender
  • Platform console
  • ROPS
  • Seat

Please note this manual is in downloadable PDF format only. If you have any questions about this product or would like to request sample pages, please contact us and reference the product name or SKU.

SKU: NH-BOOM4050-SM Category: Tag: