Description

Someca SOM 55 Parts Catalog – What You Need Before You Order Parts

If you have ever tried to match a hydraulic line or an injection pump part on a French tractor without the original part numbers, you already know the pain. The SOM 55 and Super SOM 55 are solid machines, but aftermarket parts catalogs mix up references, skip the prefix codes, and leave you holding a bolt that doesn’t thread. I have seen more than one guy order a clutch disc based on a third-party list and end up with a pilot bearing that was off by 2mm. That is wasted money and a torn-down tractor sitting on blocks. This Someca SOM 55 Parts Catalog is the factory-issued document – the same one the dealership used when these tractors were still under warranty.

At 104 pages, this is not a condensed generic binder. It uses the original French numbering system with the mandatory “44” prefix for French-sourced parts – that note is on page 1 and you need to read it before you call any supplier. The table of contents on page 3 breaks down every assembly on the tractor, from the engine block and cylinder head all the way to the variable-track front wheels. If you are rebuilding a SOM 55 or Super SOM 55, this catalog is your single source for ordering the correct component, not a guess.

Engine and Fuel System Coverage – What the Plates Show

The catalog groups parts by mechanical function, not by random page numbers. Under “Ensemble Moteur” you get Plates 1 through 7 covering the engine block, cylinder head, oil pan, connecting rods, pistons, crankshaft, timing gear, and even the hour-meter drive. That is the kind of detail that saves you from ordering a rod bearing that fits a later revision. For the fuel system, Plates 8 through 24 include the fuel tank, injection pump drives, and two separate injection pump sections: OM 005.515 and Bosch 584.453. If your SOM 55 came with either pump, the part numbers are on the plate. The regulator details are also separated between OM 763.216 and Bosch variants. This matters because the governor springs and weights are not interchangeable.

104 Pages of OEM Exploded Diagrams

Every plate in this Parts Catalog is an exploded-view drawing with reference numbers tied to the parts list. That is how you identify which seal or bearing goes where without disassembling something twice. The 104 pages cover the entire tractor: engine, clutch, gearbox, differential, final reduction, steering, front axle with variable-track hubs, rear wheels, PTO, belt pulley, and the drawbar. There is even a section for the self-cleaning oil filter control – Plate 28. If you are maintaining a SOM 55 and the oil filter bypass is sticking, you need that plate to find the right spring and plunger.

Who This Parts Catalog Helps Most

This document is aimed at owners who are doing their own restoration or repair, as well as small shops that don’t have access to French agricultural parts databases. If you have a Super SOM 55 and the fuel filter housing is leaking, Plate 17 (FISPA filter) or Plate 18 (CARELLO filter) will give you the correct gasket and element numbers. Automotive Industry Overview discussions often mention the importance of original documentation – and this is the real thing, not a reprint from a third-party scanner.

Why Factory-Issued Parts Catalogs Beat Aftermarket Lists

I do not trust aftermarket parts catalogs for European tractors. The numbering systems change, supersessions get dropped, and you end up with a part that fits nothing. This catalog comes from Soméca’s own print run – 2nd edition, September 1963. The prefix rule on page 1 tells you that every French-sourced reference number must start with “44” to avoid interference with other manufacturers’ numbers. Aftermarket lists ignore that. You will find that level of detail also on page 26, where the oil pump parts are drawn with the exact pump-to-block gasket and drive gear. If you buy a gasket set without that plate, you will be grinding down a standard gasket to fit.

FAQ

Does this catalog include part numbers for the injection pump?

Yes, both OM and Bosch pump details are on Plates 11–14.

How do I order parts using this manual if I don’t read French?

The catalog is in French – plate titles and part labels are in French – but exploded diagrams with numbered callouts are universal. Match the number on the drawing to the table, write down the reference, and prefix “44” if required. If you need help with translation, run the table through a dictionary app. The drawings are clear enough that you can identify the part by shape. For example, Plate 26 shows the oil pump assembly with seven different parts – the gasket, cover, gear set, relief valve, and drive gear are all labeled. You will not mix them up because each callout points to the exact location.

If you have a SOM 55 or Super SOM 55 sitting in the shed waiting on parts, stop cross-referencing numbers from three different websites. Get the factory document that was printed for the mechanics who assembled these tractors. Access the Factory Manual and start ordering the right parts today.

Related manuals you might need: SOM 20 D 25 D 1966 Parts Catalog, Someca T.P.S. 1962 Parts Catalog, SOMECA SOM.35 Parts Catalog.