Part of the Kubota Parts Manuals.
This is the factory parts catalog for the Kubota B1630 front loader, publication number 100Z0002, covering the B1630 and B1640/A loader assemblies. It is a 34 page PDF with a searchable text layer, so you can look up part numbers and copy them straight into an order.
Inside you get exploded diagrams and Kubota part numbers for the sub-frame and mounting components, the tractor and loader hydraulics, the single lever control valve, the pressure relief cartridge, and the lift and bucket cylinders. Parts are split by serial number range, so you can match the correct hydraulics and cylinders to your machine.
Owners and independent mechanics use it to identify the exact replacement part, rebuild a leaking lift or bucket cylinder, and order seals, fittings, and hardware without guessing. Optional round back bucket sizes are listed as well.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| B1633 Sub-Frame & Components | Upright, Sub-Frame Assy, Label Caution, Label Warning, Label Control, Front Bracket, Rear Mount, Belly Brace | |
| B1634 Sub-Frame & Components | Upright, Sub-Frame Assy, Label Caution, Label Warning, Label Control, Rear Mount, Belly Brace, Front Bracket | |
| B1635 Sub-Frame & Components | Upright L.h. W/ O, Upright R.h. W/ O, Sub-Frame Assy, Label Caution, Label Warning, Label Control, Rear Mount, Bracket L.h | |
| B1639 Sub-Frame & Components | Upright, Sub-Frame Assy, Label Caution, Label Warning, Label Control, Rear Mount, Bracket L.h, Bracket R.h | |
| B1633&39 Tractor Hydraulics | Fitting Return Oil, Hose, Fitting, Cap | |
| B1634&35 Tractor Hydraulics | Fitting Return Oil, Delivery Pipe, Hose, Fitting, Diverter Block, Filler Cap, Obtain Locally | |
| B1630 40 & 40A Lift Frames & Components | Lift Frame Assy, Pivot Pin Special, Hair Pin Clip, Obtain Locally, Indicator, Rod, Bucket Rnd Back, Label Kubota | |
| B1630 40 & 40A Single Lever Control | Control Valve Two, Yoke, Bushing, Clevis Special, Cover, Long Link, Short Link, Lock Link | |
| B1630 40 & 40A Control Valve | Kit Power Beyond, Kit Load Check, Kit Detent, Kit Spring, Relief Cartridge, Seal Kit, Cap Tamper Proof, Orifice Plate | |
| Pressure Relief Cartridge | Seal Kit Both, Tamperproof Cap, Gasket Aluminum, Back-Up Ring, Locknut, Spring Housing, Flatwasher, Spring | |
| Loader Hydraulics B1630 <=22004921 B1640/A <=24005472 | Lift Cylinder, Bucket Cylinder, Steel Line Short, Steel Line Long, Fitting, Orifice Plate, Pivot Pin Special, Hairpin Clip | |
| Loader Hydraulics B1630 =>22004922 B1640/A =>24005473 | Lift Cylinder, Bucket Cylinder, Steel Line Short, Steel Line Long, Fitting, Orifice Plate, Pivot Pin Special, Hairpin Clip | |
| Lift Cylinder B1630 <=2004921 B1640/A <=244005472 | Barrel, Rod, Piston, Head Gland, Lube Fitting, Internal Snap Ring, Rod Wiper, Rod Seal | |
| Bucket Cylinder B1630 <=22004921 B1640/A <=2005472 | Cylinder Barrel, Cylinder Rod, Piston, Head Gland, Lube Fitting, Retaining Wire, Rod Wiper, Rod Seal | |
| Lift Cylinder B1630=>22004922 B1640/A =>24005473 | Barrel, Rod, Piston, Head Gland, Lube Fitting, Internal Snap Ring, Rod Wiper, Rod Seal | |
| Bucket Cylinder B1630=>22004922 B1640/A=>24005473 | Cylinder Barrel, Cylinder Rod, Piston, Head Gland, Lube Fitting, Retaining Wire, Rod Wiper, Rod Seal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Filler Cap (06314-60060) Weight | 0.029 kgf | p. 12 |
| Optional Bucket Type | BUCKET 42 RND BACK | p. 16 |
| Lift Cylinder Locknut (70050-02489) Size | 3/4-16 | p. 28 |
| Bucket Cylinder Locknut (70050-93642) Size | 1/2-20 | p. 30 |
