Description

JCB JCB1 Parts Catalog – Stop Guessing Which Part Fits

You are elbow-deep in a JCB1 backhoe, and the part you pulled off has a number stamped on it that doesn’t match anything in the aftermarket listing. Now what? You can either start calling suppliers with a vague description or open a genuine JCB JCB1 Parts Catalog and confirm the exact part number, the supersession, and whether it fits your machine serial number. I’ve been turning wrenches since before most of you were born, and I will tell you right now: buying parts by cross-referencing aftermarket sites is a fast way to own a shelf full of wrong gaskets. This catalog—94 pages of factory-issued illustrations and part numbers—is what you need on the bench if you value your time and your wallet.

Axle – Front and Rear: Page 1A and 16A–18A

The index on page vii tells you exactly where to land: front axle on page 1A, rear axle on pages 16A through 18A. Each page gives you key numbers that match an exploded view, a description of the part, the quantity per assembly, and the JCB part number. If you need the rear axle hub or the reduction hub, that’s page 17A and 18A. No guesswork. No “this might be it.” You look at the illustration, find the key number, and order the part.

Brake System: Hand Lever, Linkage, and Rear Axle Brake

Brakes on a backhoe are not something you want to get wrong. This catalog covers the hand lever (page 7A), the brake linkage (page 6A), and the rear axle brake (page 17A). Each page shows you the exact lever, rod, clevis pin, and spring. You get the quantity—so you know you need two clevis pins, not one. You also get a supersession table in the front matter (page iii) that tells you when a part number has changed. For example, the old part HV3/157/2 for the 4-lever valve block was superseded to 919/07300. Write that number down, not the old one.

Electrical Fittings and Wiring Harness: Page 8A

Electrical problems on old JCB machines are a headache because the harnesses get cut up and repaired with whatever is lying around. Page 8A lists every electrical fitting and the full wiring harness. You can match the connector in your hand to the illustration and order the factory replacement. That saves you from splicing in random spade terminals that will corrode in six months.

Engine Coverage and Pump Sections

The engine section on page 13A covers the base power unit, but you also get separate pages for the pump: Petter engine pump (page 28A) and JCB engine pump (page 29A). If you are rebuilding the fuel or hydraulic drive system, you need these pages. The parts catalog does not give you torque specs or service procedures—that is what the service manual is for—but it gives you the part numbers for every seal, gasket, and pump component.

Tool Kit and Tyres: Don’t Overlook the Small Stuff

Page 31A lists the tool kit that originally shipped with the machine and the tyre specifications. You see the tommy bar part number 804/00056. If you are missing that rear wheel nut tool, you can order it from JCB using that number instead of improvising with a punch. Also listed: rear tyre 11.2/10 x 24 Continental. That matters when you are matching rubber on a two-wheel-drive backhoe.

Number Conversion Table – Why You Need It

Starting on page iii, the catalog includes a number conversion table that maps old part numbers to new ones. JCB changed numbering schemes over the years, and if you order by the old number you will get a “not found” from your dealer. The table runs several pages (e.g., G64/74 to 1305/6222, HV3/43 to 920/00115). Always check this table before ordering. The parts catalog is only useful if you use the current number.

Related Manuals

If you need other JCB references, check JCB 1D Parts Catalogue PC. A102, JCB 7 7C 8C 8D Buckets & Attachments Index, and JCB Mini – Midi Excavators Technical Information Sheets.

For background on the engine technology used in these machines, see this Wikipedia article on diesel engines or read this Wikipedia article on diesel engines.

Frequently Asked Questions

Does this catalog include exploded diagrams for the brake system?

Yes. The brake section has separate pages for the hand lever (7A), linkage (6A), and rear axle brake (17A). Each page shows a numbered illustration with a parts list below it. You get the description, quantity, and part number. For example, the hand lever page lists the lever itself, the pivot pin, the spring, and the clevis. All key numbers correspond directly to the drawing. This is not a generic diagram—it is the same illustration JCB used on the assembly line. If you are rebuilding the brake linkage, you can identify every cotter pin and washer.

Are the part numbers in this catalog still current?

No. This is an original JCB parts catalog with old numbers; use the supersession table on page iii to find the current numbers.

Do not trust aftermarket parts lists that promise interchangeability without proof. Access the Factory Manual and get the real part numbers from the source that built the machine.