Part of the Kubota Parts Manuals.
This is the Kubota parts catalog for the B1640A front loader, also covering the B1630, 40, and 40A loader variants, a 26 page illustrated parts book. It documents the loader attachment: the sub-frame and mounting components, tractor and loader hydraulics, lift frames, the single lever control, the control valve and pressure relief cartridge, and the lift and bucket cylinders.
Each assembly is shown as an exploded diagram keyed to Kubota part numbers and quantities, with early and late hydraulic and cylinder parts split by serial number so you order the correct version for your machine.
Use it to identify cylinder seal kits, control valve and spool parts, pivot pins, bushings, hoses, and fittings when rebuilding or resealing the loader. Delivered as a downloadable, printable PDF you can keep on the bench or on a phone in the shop.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Sub-Frame & Components | Upright, Sub-Frame Assy, Label Caution, Label Warning, Label Control, Label Instruction, Rear Mount, Bracket | |
| Tractor Hydraulics | Fitting Return Oil, Quick Coupler, Dust Cap Set, Hose, Adapter, Fitting, Nipple, Reducer | |
| Lift Frames & Components | Lift Frame Assy, Pivot Pin Special, Hair Pin Clip, Obtain Locally, Indicator, Rod, Bucket Rnd Back, Label Kubota | |
| Single Lever Control | Control Valve Two, Yoke, Bushing, Clevis Special, Cover, Long Link, Short Link, Lock Link | |
| 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 | Lift Cylinder, Bucket Cylinder, Steel Line Short, Steel Line Long, Fitting, Orifice Plate, Pivot Pin Special, Hairpin Clip | |
| Lift Cylinder | Barrel, Rod, Piston, Head Gland, Lube Fitting, Internal Snap Ring, Rod Wiper, Rod Seal | |
| Bucket Cylinder | Cylinder Barrel, Cylinder Rod, Piston, Head Gland, Lube Fitting, Retaining Wire, Rod Wiper, Rod Seal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| B1630 | ||
| Early Loader Hydraulics S/N Cutoff, B1630 | <=22004921 | p. 15 |
| Late Loader Hydraulics S/N Start, B1630 | =>22004922 | p. 17 |
| Early Lift Cylinder S/N Cutoff, B1630 | <=2004921 | p. 19 |
| Early Bucket Cylinder S/N Cutoff, B1630 | <=22004921 | p. 21 |
| Late Lift Cylinder S/N Start, B1630 | =>22004922 | p. 23 |
| Late Bucket Cylinder S/N Start, B1630 | =>22004922 | p. 25 |
| B1640A | ||
| Early Loader Hydraulics S/N Cutoff, B1640A | <=24005472 | p. 15 |
| Late Loader Hydraulics S/N Start, B1640A | =>24005473 | p. 17 |
| Early Lift Cylinder S/N Cutoff, B1640A | <=244005472 | p. 19 |
| Early Bucket Cylinder S/N Cutoff, B1640A | <=2005472 | p. 21 |
| Late Lift Cylinder S/N Start, B1640A | =>24005473 | p. 23 |
| Late Bucket Cylinder S/N Start, B1640A | =>24005473 | p. 25 |
