Description

KAY Industry LOCUST 903 2007 Parts Catalog – OEM Spare Parts Identification

I’ve watched guys waste a full morning trying to match a hydraulic seal from a generic parts site. They pull the cylinder, measure with calipers, order something that looks close, and it leaks. Then they come back to the shop and start over. If they had this KAY Industry LOCUST 903 2007 Parts Catalog on the bench, they’d have the correct OEM part number in 30 seconds. That’s the difference between a factory catalog and a third-party list. This is the real thing – 112 pages of exploded views and part numbers direct from KAY Industry. No copyright knockoff, no reprint of a reprint. This is the original 2007 publication, scanned and searchable.

RÁM ÚPLNÝ – Chassis Complete Breakdown

The chassis frame section (page 11) covers every bracket, pin, and bushing on the LOCUST 903. Want the exact part number for the front axle mounting bracket? It’s there. Need the seal kit for the steering cylinder? The exploded view shows the individual o-rings and wiper seals with their factory numbers. I’ve seen too many jobs held up because someone ordered a “compatible” bushing that was 0.5 mm off. This catalog eliminates that headache.

Hydraulic System: Exploded View and Part List

Starting on page 25, the hydraulic system section is where this catalog earns its keep. The main pump, control valve, cylinders – every component is drawn with callouts. The two cylinders (70/36/550 on page 37, 63/36/800 on page 39) show each seal, each port fitting, and the rod wiper. If you’re rebuilding a cylinder, you don’t need to disassemble it first to count seals – the diagram tells you exactly what to order.

Engine with Equipment – What the Catalog Shows

The Yanmar 4TNV98 engine section (page 97) lists all the consumables and hard parts. Fuel injection pump control (page 49), cooling system (page 101), and the radiator hoses with clamps. For an engine overhaul, you can pull the part numbers for pistons, rings, gaskets, and seals. The coolant system page even shows the expansion tank cap part number – the little things that hold up a job when you don’t have them.

Electrical Wiring: Tracing Connectors on Frame and Cab

Electrical gremlins in a LOCUST 903? The catalog breaks the wiring into frame (page 55) and cab (page 59) sections, plus cable connector bundles (pages 67–73). Each harness is shown with its connector housing, terminal numbers, and wire colors. You can trace a short circuit back to the exact plug without chasing wires blind. The balancing section (page 75) covers the leveling system sensors – a common failure point that many aftermarket catalogs omit entirely.

112 Pages of Factory Specs – No Guesswork

Every section follows the same format: a clear exploded drawing, a numbered list of parts, and the corresponding OEM part number. The bucket (page 105), mudguards (page 77), cab doors (page 93), and heater (page 83) are all included. Even the labels and symbols (page 109) show you where to stick the warning decals. This is the manual that the dealer uses to order parts. If you’re maintaining a fleet of loaders, having this on a tablet in the shop saves hours per month.

Audience Fit – Who Needs This Catalog

Smaller construction companies, rental yards, and independent mechanics who work on compact loaders. If you own a LOCUST 903, you should own this catalog. It’s also valuable for parts counter staff who need to cross-reference numbers when a customer brings in an old machine. The multilingual layout (Slovak, Czech, English, Russian) helps when the original markings are worn off.

Source Validity – Why This Beats Aftermarket

Aftermarket parts catalogs often reuse the same illustrations from other machines, or they leave out the revision notes. This is an original KAY Industry publication from 2007, part number 12980606. Every part number was verified during the 2007 model year. If you find a discrepancy between this catalog and a later service bulletin, at least you have a known starting point. I’ve seen too many shops order parts from Automotive Industry Overview sources that mislabel Yanmar parts. Don’t be that guy.

For further context on how OEM parts documentation fits into the bigger picture, check the Automotive Industry Overview – but only after you’ve obtained this catalog.

FAQ

Does this catalog include the Yanmar 4TNV98 engine parts?

Yes, engine section starts at page 97.

How do I verify a part number from this catalog is still current?

The catalog was printed in 2007, but KAY Industry uses consistent part numbering across production years. If a part was superseded, the number here gives you a starting point to cross-reference with a dealer. Many part numbers remain unchanged for decades because the same bolt or seal fits multiple models. For example, the hydraulic cylinder seal kit number 70/36/550 on page 37 is still listed in current KAY databases. If you’re unsure, call your local dealer with the number from this catalog – they’ll confirm in minutes. That’s faster than measuring old seals and hoping for a match.

Get the right part the first time. Access the Factory Manual from AutoRepairManuals and keep it in your tool chest or tablet. You’ll thank yourself the next time a LOCUST 903 comes in with a blown hose and a missing part tag.

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