New Holland B90B Backhoe Loader – Parts, Specs & Serial Number Guide

Description:

The New Holland B90B Backhoe Loader is a versatile, mid-sized machine designed for digging, trenching, loading, and lifting in construction and utility applications. As part of the early “B” Series, the B90B combines fuel-efficient power, smooth hydraulics, and easy operator controls with rugged performance. With standard 4WD, a turbocharged diesel engine, and optional Extendahoe configuration, the B90B is built to handle daily job site demands.

Parts such as hydraulic cylinder seal kits, brake components, loader pins, and filters are readily available from BrokenTractor.com.

Engine Specifications

• Engine Make: New Holland / Iveco

• Model: 4-cylinder, 3.9L turbocharged diesel

• Gross Horsepower: 90 hp

• Emissions Tier: Tier 2 compliant

• Cooling System: Liquid-cooled

• Fuel Tank Capacity: Approx. 35 gallons

Transmission

• Type: Synchro Shuttle or Powershift (varies by config)

• Gears: 4 forward / 4 reverse

• Clutch: Torque converter with manual or power shifting

• Drive: Standard 4WD

Hydraulic System

• System Type: Open-center

• Pump Flow: Approx. 28–35 GPM

• System Pressure: ~3,000 PSI

• Hydraulic Tank Capacity: ~18 gallons

• Compatible Parts: New Holland B90B Hydraulic Seal Kits

Dimensions & Performance

• Operating Weight: ~17,000 lbs

• Max Dig Depth: 14 ft 6 in standard, up to 18 ft with Extendahoe

• Loader Bucket Width: 82–92 inches

• Lift Capacity: Approx. 6,800 lbs

• Transport Length: ~23.3 ft

• Wheelbase: ~84 inches

Maintenance Essentials

• Hydraulic Cylinders: Replace rod and piston seals as needed → Seal Kits

• Brake System: Wet disc type – low maintenance but check master cylinder and valves

• Pins & Bushings: Replace if excessive play is found → Pin & Bushing Kits

• Filter & Oil Changes: Service every 250 hours

Common Issues & Fixes

• Loader Drift or Boom Creep: Usually caused by leaking cylinder seals

• Sluggish Transmission Shifting: Check torque converter fluid and inspect shift linkage

• Hydraulic Noise or Delayed Response: Caused by air in system or worn pump—bleed system and inspect suction screen

• Brake Pedal Travel or Fading: Rebuild master cylinder or check brake valve

Serial Number Location

The serial number plate is typically located on the right side of the frame, just behind the front loader tower or near the engine cowling. Always use this when ordering parts to ensure correct compatibility.

Pro Tips

• Use high-quality hydraulic oil to protect your tandem pump

• Inspect the Extendahoe section for cylinder rod scoring or external leaks

• Grease all pivot points—especially loader arms and stabilizers—daily for long-term performance
  → Browse All New Holland B90B Parts at BrokenTractor