Kubota B1630 Front Loader Parts Manual

The Kubota B1630 Front Loader Parts Manual is the book you reach for when you’ve got a Kubota front loader on a compact tractor and you’re trying to figure out exactly which pin, bushing, seal, or cylinder kit you’re dealing with. It’s what I’d use on a farm call when a loader pin is egged out or a curl cylinder is leaking and we need the right parts the first trip. The Kubota B1630 parts manual gives you exploded diagrams and OEM part numbers so you can order parts before you tear the loader down and park the tractor during planting or hay season.

What this manual helps you do

• Identify every component in the loader frame, boom arms, cross tube, and mounting brackets so you can match worn or bent pieces to the right Kubota part number.
• Locate all pins, bushings, and related hardware in the lift and bucket linkages when planning a pivot rebuild or tightening up a sloppy loader.
• Look up OEM part numbers for bucket and quick-attach components so your dealer can pull the correct cutting edge, hooks, or latch parts.
• Find hydraulic cylinder internals and seal kits for lift and bucket cylinders when you’re rebuilding instead of replacing.
• Verify hardware sizes and quantities for bolts, nuts, washers, and hose clamps so you can order everything in one shot and cut down on return trips to town.

Who this is for

This parts manual is aimed at an independent ag mechanic, farm owner-operator, or Kubota dealer parts counter who needs to ID and order loader parts accurately. If you’re looking for torque specs, hydraulic test procedures, or step‑by‑step repair instructions, you’ll want the Kubota Workshop/Service Manual instead, not this parts catalog.

FAQ

Q: Does this cover the hydraulics on the B1630 loader, like the lift and bucket cylinders?

A: Yes, it typically shows the loader hydraulic cylinders, hoses, valves, and related hardware in exploded views with part numbers.

Q: Are the part numbers in this manual the latest ones Kubota uses?

A: The manual shows the OEM numbers as printed and often notes superseded numbers, but your dealer’s system is the final word on current replacements.

Bottom line: If your main goal is to see how the B1630 loader goes together and get the right Kubota part numbers to keep downtime short, this is the right manual; if you need repair procedures, keep looking for the service manual instead.

Table of Contents:

• Instructions for Parts Books
• Kubota B1630 Loader
• B1633 SUB-FRAME & COMPONENTS
• B1634 SUB-FRAME & COMPONENTS
• B1635 SUB-FRAME & COMPONENTS
• B1639 SUB-FRAME & COMPONENTS
• B1633&39 TRACTOR HYDRAULICS
• B1634&35 TRACTOR HYDRAULICS
• B1630 40 & 40A LIFT FRAMES & COMPONENTS
• B1630 40 & 40A SINGLE LEVER CONTROL
• B1630 40 & 40A CONTROL VALVE
• PRESSURE RELIEF CARTRIDGE
• LOADER HYDRAULICS B1630 <=22004921 B1640/A <=24005472
• LOADER HYDRAULICS B1630 =>22004922 B1640/A =>24005473
• LIFT CYLINDER B1630 <=2004921 B1640/A <=244005472
• BUCKET CYLINDER B1630 <=22004921 B1640/A <=2005472
• LIFT CYLINDER B1630=>22004922 B1640/A =>24005473
• BUCKET CYLINDER B1630=>22004922 B1640/A=>24005473

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