Description

Fiat-allis 100-C Parts Catalog

If you’ve ever ordered a part for a Fiat-allis 100-C motor grader and ended up with the wrong bracket, seal, or hydraulic line because you trusted a generic aftermarket listing, you already know why this Parts Catalog exists. I’ve seen guys burn a whole day waiting for a part that didn’t fit. This OEM document – 354 pages of factory-verified part numbers, exploded diagrams, and revision history – stops that. It covers serial number ranges 27Y08001-UP and 57M09101-UP, with supplement updates through 1978. You order the exact piece the grader came with, not some third-party guess.

Parts Breakdown for the 100-C Motor Grader

Each section in this Parts Catalog organizes components by system – engine, transmission, final drive, blade control hydraulics, cab hardware, and more. The exploded views show every nut, bolt, and seal with its own part number. You don’t need to cross-reference aftermarket charts that may or may not match Fiat-allis’s original specs. Page references inside the catalog let you jump from an assembly view to the individual parts list without flipping through the whole 354 pages blind. Need a new blade lift cylinder seal? The book points you to the correct group, not a generic “fits many” listing.

Why OEM Documentation Matters for Parts Ordering

Aftermarket parts catalogs often skip the revision notes that Fiat-allis included in this manual. Look at page 3 of the Parts Catalog: “Third Printing (2-78) – Identical to First Printing (1-75) including all information as released in Supplements No. 1 (3-75) and No. 2 (5-76).” That means if you have a 100-C manufactured after 1976, the parts listing here already accounts for running changes. A generic catalogue won’t catch those supersessions. You’ll order an obsolete part and waste time. This manual tells you exactly when a number changed and why. For background on why OEM documentation standards matter across the industry, see this Automotive Industry Overview.

3 Printing Revisions Documented

This Parts Catalog includes all three printing runs – first printing (1-75), then supplement No. 1 (3-75), and supplement No. 2 (5-76). The revision list at the front of the book tells you which pages were changed. For example, pages 7 and 8 were revised, pages 9 and 10 remained unchanged except for a new page 130C and 130D added. That level of tracking is what separates an OEM manual from a photocopy that claims to be “complete.” If you’re working on a 100-C that’s had multiple updates over its service life, this revision history saves you from ordering a part that was deleted in 1976.

Avoid Accidents: The Warning You Cannot Skip

Page 2 of this Parts Catalog contains the full “Avoid Accidents” notice from the National Safety Council. It states: “Never attempt to clean, oil or adjust a machine while it is in motion.” It also warns that hydraulic, mechanical, or cable-controlled equipment must be lowered to the ground before servicing, and if it must be raised for access, it must be supported by means other than the lift cylinders. That’s not a suggestion – it’s the kind of instruction you get from the manufacturer who designed the machine. Ignoring it can kill you. This manual puts that warning front and center because Fiat-allis expected every mechanic to read it before touching the grader.

Serial Number Ranges: 27Y08001-UP and 57M09101-UP

Two serial number prefixes are listed for the 100-C: 27Y08001-UP and 57M09101-UP. Any parts catalog that doesn’t separate these two builds risks mixing up different steering systems, brake configurations, or final drive ratios. This Parts Catalog gives you separate illustrations and part numbers for each. If your machine falls outside these ranges, you may need a different edition – check the publication details on page 4 of the manual. That supplement page lists every page revision tied to specific serial break points.

What This Catalog Does Not Cover

This is a parts catalog, not a service manual. It tells you what the part looks like and what number to order – not how to install it or what torque to tighten it to. For those procedures you need the Fiat-allis 100-C service manual. But if you’re rebuilding a grader or stockpiling spares, this Parts Catalog is the only reliable source for true OEM part numbers. The difference between a 12-point bolt and a hex head may not matter on a shelf, but it matters when the socket doesn’t fit in the cavity. The catalog gives you that detail. Related OEM documents you might need include the Fiat-Allis HD41 Parts Catalog – 370-Page OEM Factory Manual and the Fiat-Allis 12G-B 1979 Parts Catalog – OEM Factory Manual 337 Pages. For a smaller grader, the Fiat-allis 6G Parts Catalog – OEM Factory Manual 559 Pages is also available.

To understand why parts catalogs from the original manufacturer remain the gold standard, read the Automotive Industry Overview article on industry documentation practices.

Frequently Asked Questions

Does this parts catalog include torque specifications?

No, this is a parts catalog, not a service manual. It lists part numbers and exploded views only.

How many pages does the Fiat-allis 100-C Parts Catalog have?

354 pages, including all three printing revisions and supplement inserts.

Can I use this catalog for a 100-C with serial number outside the listed ranges?

If your serial number is outside 27Y08001-UP or 57M09101-UP, this edition may not match your machine. Fiat-allis released multiple catalogs as production changed. Check the supplement list on page 4 of the catalog – it specifies which page revisions apply to each serial break. Some parts may still be identical, but others (like hydraulic pumps or final drive gears) differ. Without matching the serial range, you risk ordering incorrect components. Contact Fiat-Allis technical publications with your serial number to confirm the correct catalog edition before purchasing.

Is this manual a reprint or an original OEM document?

It is the original factory PDF from Fiat-Allis, exactly as printed in 1978 with all supplements included.

Don’t waste time matching aftermarket part numbers that don’t fit. Access the Factory Manual now and get the same parts breakdown that a Fiat-Allis dealer would use.