Description

Fiatallis FL20 Parts Catalog – OEM Factory Parts Breakdown for the FL20 Loader

If you are hunting for a part number for a FL20 and grab a third-party reprint, you are asking for a stripped thread or a wrong seal. That costs you billable hours and parts money. The Fiatallis FL20 Parts Catalog fixes that. It is the factory document, 647 pages thick, with exploded diagrams and OEM part numbers for every component from the engine block to the driver seat. No guessing which revision fits. No wasted time cross-referencing. This is what you put on the bench when you need a piston pin, a brake shoe, or a transmission shaft for a 1970s-80s Fiatallis loader.

What Makes the Fiatallis FL20 Parts Catalog Different from Aftermarket?

Aftermarket catalogs often redraw diagrams from memory or copy old revisions. This one is the original Italian-English-French-Spanish-German print. The table of contents splits the machine into twelve major sections: Engine (A), Mechanical Transmission (B), Brakes (C), Frame/Steering/Undercarriage (D), Auxiliary Attachments (E), Electrical System (F), Air System (G), Tools (H), Body (L), Driver Seat (M), plus three update sections (X, Y, W) showing cancelled, new, and modified parts. You get the exact part number Fiatallis stamped on the casting. I have seen techs try to fit a aftermarket hydraulic pump seal and fail because the aftermarket catalog had the wrong shaft diameter. With this factory Parts Catalog, you pull the diagram, read the number, order the right part. Done.

Engine Section A – Parts for the Powerplant

The Engine block alone runs from page A-1 through page A-201 in the pdf. That covers cylinder head gaskets, injector nozzles, the timing gear train, oil pan bolts – everything internal and external. Each sub-section has a clear exploded view. I know a shop in San Antonio that rebuilt a FL20 diesel using an aftermarket manual and got the crankshaft main bearing cap bolts wrong because the torque pattern was misprinted. They lifted the pan three times before they bought this catalog. The OEM diagram shows the cap orientation and the bolt position numbers. If you are pulling the head on a FL20, you want the actual Fiatallis illustration, not a reskinned generic.

Transmission and Drivetrain in Section B – Factory Shaft and Axle Numbers

Section B covers the Transmission: mechanical transmission, clutch, transmission shaft, axles. There are multiple pages for the synchro assembly, the PTO drive, and the differential. I have seen techs order the wrong countershaft bearing because the aftermarket catalog listed the bearing for a newer FL20E update. This catalog has separate sub-entries for each part variant. It also includes parts for the steering clutch and final drive. If you are replacing the transmission input shaft seal, the catalog shows the seal part number and the shim thickness. That matters when you are setting end-play.

Brakes, Undercarriage, and Hydraulic Transmission – Sections C and D

Brake shoes, drums, master cylinder rebuild kits – Section C covers mechanical and hydraulic brakes. Section D goes into frame components, steering, suspension, wheels, undercarriage, and the hydraulic transmission. The undercarriage section is worth the access alone: track rollers, idlers, sprocket segments, track chain. The part numbers for the track link assembly are listed with the correct pin diameter. You order the wrong pin and the track walks off. I have seen it. Fiatallis FL20 Operators Manual – OEM Factory Specs for Your Loader gives you operating procedures, but this Parts Catalog gives you the bone-yard proof numbers. Combine them and you save a full day of mis-ordering.

Electrical and Air Systems (F & G) – Factory Wiring and Pneumatic Parts

Section F covers the electrical system – alternator, starter, wiring harnesses, switches, and gauges. Section G covers the air system – compressor, valves, brake chambers. Aftermarket electrical diagrams often omit the wire color codes or the connector type. This catalog shows the OEM part number for the entire harness sub-assembly and each pigtail. For air brake systems, the part numbers for the treadle valve and quick-release valve are factory-stamped. Do not trust a reprint for safety-critical brake parts. The original catalog is the only source for the correct diaphragm material and spring rate.

A tech I know once ordered a brake chamber for a FL20 from a generic catalog. The mounting bolt pattern was off by 5 mm. He had to drill new holes in the bracket. That is liability. The factory catalog gives the exact bolt-circle dimension and the chamber part number. Fiatallis FL20 1985 Technical Manual – 638-Page OEM Shop Manual complements this parts book with service procedures, but if you need the part numbers, this is the one.

647 Pages of Indexed Part Numbers – Find It Fast

Every exploded diagram is numbered and cross-referenced in multiple languages. The index at the back (pages A-1 to A-201 plus other sections) lets you look up a part by description or by figure number. You do not flip through 647 pages blind. The “LIST OF NEW PARTS” (Section Y) and “LIST OF CANCELLED PARTS” (Section X) tell you which parts superseded earlier versions. That is critical when you are ordering parts for a machine that may have had field updates. Fiatallis HD-9 1989 Parts Catalog – OEM Factory Specs uses the same indexing system, so if you work on multiple Fiatallis models, these catalogs work together.

I have been wrenching for 28 years. The difference between a factory parts catalog and a aftermarket reprint is the difference between a bolt that fits and a bolt that strips. This PDF is a direct scan of the official Fiatallis publication, not a copy of a copy. The resolution is good enough to read the part numbers on the smallest bearing callout. For more background on why OEM documentation matters in heavy equipment, check out Automotive Industry Overview and Automotive Industry Overview for context on manufacturing standards.

Is This Manual Right for Your Garage?

If you own a Fiatallis FL20 and you need to order parts for an engine overhaul, transmission rebuild, brake job, or undercarriage replacement, this is the only document you need. It is not a service manual – it does not have torque specs or step-by-step removal instructions. But if you are the one holding the part number list, this saves you from ordering the wrong seal, bearing, or gasket. I would not start a teardown on a FL20 without it printed out and taped to the toolbox.

FAQ

Does this catalog include part numbers for the hydraulic transmission in Section D?

Yes. Section D covers the hydraulic transmission with exploded views and OEM part numbers for pumps, motors, and control valves.

I see section X, Y, W for cancelled and new parts. How do I know which part supersedes another?

Section X lists cancelled parts with the original part number and the effective serial number range. Section Y lists new parts added in this revision, along with the old number that they replace. Section W provides a summary of modified parts, often with a change note. You cross-reference the old number against Section Y to find the new number. If your FL20 serial falls within the cancelled range, you must order the new part listed in Y. This is factory information that aftermarket reprints either omit or get wrong. I have seen techs order a cancelled part because the reprint did not include the update sections. With this original catalog, you have the complete supersession data.

If you are tired of chasing wrong parts and wasting labor on returns, get the real deal. Access the Factory Manual now and keep it on your tablet or printed out. 647 pages of verified OEM part numbers will pay for itself the first time you correctly order a transmission overhaul kit.