Kubota R400(B) Wheel Loader Parts Manual (BKIDK0190)

The Kubota R400(B) is a compact wheel loader you’ll see on larger farms, landscape crews, and yards that move a lot of material. The Kubota R400(B) parts manual is what I keep on hand when I’m trying to ID a broken or worn component before I call the dealer. If you’re trying to line up parts for a downtime window or keep your own stock of wear items, this is the book you reach for. Just know it’s about what fits where and what to order, not how to wrench on it.

What this manual helps you do

• Identify every component on the R400(B) from exploded diagrams: loader arms, cylinders, axles, cab, electrical, engine-related hardware, and more.
• Locate the exact Kubota OEM part number for things like pins, bushings, seal kits, filters, hoses, and hardware so you can order once and right.
• Look up quantity-per-machine for fasteners, seals, and gaskets so you don’t come up one bolt short in the middle of a repair.
• Cross-reference older Kubota part numbers to the updated superseded numbers the dealer’s system now uses.
• Verify that a part on your shelf or from a salvage unit actually matches what the R400(B) parts breakdown shows before you install it.

Who this is for

This parts manual fits fleet maintenance managers, independent ag/landscape mechanics, Kubota dealer parts staff, and owner-operators who order their own parts. If you need torque specs, adjustment procedures, or step‑by‑step repair instructions, you want the Kubota Workshop/Service Manual instead, not this parts catalog.

FAQ

Q: Does this cover the engine, hydraulics, and electrical on the R400(B)?

A: Yes. A Kubota R400(B) parts manual will normally break down engine-related components, hydraulic pumps and cylinders, driveline, axles, loader structure, and the electrical system as assemblies.

Q: Are the part numbers in this manual current?

A: The manual shows the OEM numbers used at print time and usually notes superseded numbers, but your Kubota dealer will confirm the latest valid part number in their system.

Bottom line: If your main goal is to ID and order the correct Kubota R400(B) parts with minimal back-and-forth at the counter, this is the right manual; if you’re chasing repair procedures, keep looking for the WSM.

Table of Contents:

• Engine
  • Cylinder Block & Head
  • Lubrication & Cooling
  • Fuel System & Injectors
  • Air Intake & Exhaust
• Hydraulic System
  • Main Hydraulic Pump
  • Control Valve Assembly
  • Lift Cylinders
  • Tilt / Bucket Cylinders
  • Auxiliary Hydraulics
  • Hydraulic Lines & Filters
• Drive System
  • Drive Motors / Pumps
  • Final Drive Reductions
  • Wheels or Tracks
  • Undercarriage (track models)
• Loader Linkage
  • Boom / Lift Arms
  • Bucket / Attachment Plate
  • Pivot Pins & Bushings
  • Quick Attach System
• Cab / ROPS
  • Operator Seat
  • Joysticks & Foot Pedals
  • Cab Frame / ROPS Structure
  • Glass & Door Assemblies
• Electrical System
  • Battery & Starter
  • Alternator
  • Wiring Harness
  • Switches, Lights & Indicators
• Body & Frame
  • Main Frame / Chassis
  • Engine Hood & Covers
  • Counterweight (if equipped)
• Reference
  • Fasteners & Seals
  • Decals & Labels
  • Numerical Part Number Index

Note: Topics above are typical for Kubota parts manuals of this equipment type. The actual manual may contain additional sections and detailed breakdowns.

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