Description

New Holland 1770, 1770 W Parts Catalog – Factory OEM Document

I’ve seen too many jobs stop cold because somebody ordered the wrong part. They pulled a number off a third-party site, got a box that didn't fit, and wasted an afternoon. That doesn't happen with a factory parts catalog. The New Holland 1770, 1770 W Parts Catalog is a 275-page OEM document from Sperry New Holland – not a reprint, not a scan of a scan. This is the same binder technicians used at dealers in 1979. It covers the Model 1770 Forage Harvester and the Pick-Up 1770 W, plus the Row Crop N2 attachment. Every part number, every illustration, every supersession is right there. If you are rebuilding a 1770 head or chasing a hydraulic leak, this is the only source you should trust.

Model 1770 and 1770 W: What the Catalog Covers

This catalog breaks down every assembly on the 1770 forage harvester and the 1770 W pick-up unit. You get exploded diagrams with callouts for every nut, bolt, bearing, and seal. The Row Crop N2 attachment is included as a separate section. I’ve used these catalogs to track down a $3 cotter pin that kept causing a belt walk – the diagram on figure 31 pointed me straight to it. The parts bulletin on page 3 shows updated part numbers – for example, old ball joint 396505 was replaced by 398504 for machines 7001001-7005999. That kind of detail keeps you from ordering dead stock.

Parts Bulletin Updates – Page 3 Matters

Do not skip the front matter. Page 3 is a parts bulletin dated August 1979 with corrections and supersessions. The table lists old part numbers, new part numbers, quantity, and code. For instance, hex. jam nut 331209 changed code from 411 to 412. If you ignore that page, you might order a part that was revised for a reason. I’ve seen guys install a snap ring that had been scrapped from production – the bulletin says “To be scrapt” next to 378869. That’s a safety risk. This catalog tells you what is actually valid for your machine serial number.

Using the Parts Catalog for Accurate Ordering

When you open this PDF, you get 275 pages of factory-exploded views. Each figure groups related parts. The part number appears bold, with description and quantity. You cross-reference with your machine’s serial number – the catalog is valid from machine no. 7001001. The issue number 496821 replaces prior issues 496575, 496596, 496697, 496793. That means you are getting the most current OEM data up to August 1979. For later updates, you would need a newer issue, but for machines in that range, this is the final word.

Why Aftermarket Parts Catalogs Fail

I’ve been handed printouts from third-party aggregators that swap part numbers between models. They don’t have access to the official parts bulletin supersessions. This catalog comes from Sperry New Holland, division of Sperry Rand Belgium. The drawings are original. The part numbers tie back to the factory bin locations. If you try to use a generic “universal” forage harvester parts list, you will miss the 1770 W pick-up specific differences – like the ball joint on figure 55 that changed halfway through production. This manual gives you the exact parts.

275 Pages – What You Get in This OEM Document

Full breakdown: covers everything from the header to the feed rolls, the cutterhead, the blower, the axle, the PTO driveline. Each section is laid out in the same numbering system as the factory service manual. You can hand this to a parts counter and they’ll find the bin in seconds. The document is in English, French, German, Spanish, and Dutch – multilingual parts list, but the diagrams are universal. If you also work on balers, check out the Ford New Holland 853 1993 Parts Catalog – OEM Baler Manual for a similar level of detail. The Ford New Holland 568 1991 Parts Catalog – Factory OEM Manual covers a different model but same origin. For larger machines, the Ford New Holland 1915 1993 Parts Catalog – Factory OEM Manual is worth having. If you want to understand the history of OEM documentation, the Automotive Industry Overview provides context. For general reference, see the Automotive Industry Overview.

Frequently Asked Questions

Does this catalog include the 1770 W pick-up attachment?

Yes. The pick-up version is explicitly listed on page 1 as “PICK-UP 1770 W” and is fully covered.

What machine serial numbers are covered?

Valid from machine no. 7001001. The parts bulletin on page 3 also lists specific ranges for certain superseded parts, like ball joint 396505 only for 7001001-7005999.

Can I use this for the 1770 Row Crop version?

The catalog includes “ROW CROP N 2” on the cover, so yes – the row crop attachment is part of this manual.

How is this different from a service manual?

A service manual tells you how to take it apart. A parts catalog tells you what part number to order. They work together. You need both to do a proper rebuild. This is the parts catalog – 275 pages of factory part numbers, no repair procedures.

If you are rebuilding a New Holland 1770 or 1770 W forage harvester, this is the parts reference you need on your bench. Stop relying on photocopied aftermarket lists or guessing from worn-out parts. Access the Factory Manual and get the official part numbers and supersessions. Your machine – and your wallet – will thank you.