Description

Sperry New Holland 1900 S, 1900 Parts Catalog

If you’re ordering parts for a Sperry New Holland 1900 S sickle bar attachment, or the base 1900 forage harvester, you already know how fast a wrong part number kills your day. I’ve watched guys burn an hour on the phone because they grabbed a generic cross-reference instead of the factory book. This Parts Catalog cuts that guesswork out. Fifty 50 pages of OEM exploded views, part numbers, and the exact ordering protocol Sperry New Holland used when these machines came off the line. No reprints, no aftermarket junk. Period.

Feed Table Auger and Drive – Page 2

Page 2 covers the feed table auger and its drive assembly. You get the full breakdown of the auger flights, bearings, and the chain or belt drive components. If you’ve ever had a feed table auger seize because the wrong bolt was used, you’ll appreciate that Sperry New Holland put the exact fastener grade and torque sequence in the footnotes. Don’t trust a third-party list – I’ve seen those miss critical shoulder bolts. Stick to the factory diagram.

Knife and Knife Drive – Pages 3–4

The knife section runs pages 3 and 4. It shows the knife head, ledger plates, knife sections, rock guards, and the entire drive linkage. Pay attention to the “CODE” column – it ties each part to specific machine serial numbers. A 1979 machine might use a different knife-head weldment than a 1981 unit. The manual footnotes that variation. Count on it.

Electric Variable Control for Reel – Page 7

Reel vari-drive is on page 6, but page 7 lays out the electric variable control for the reel. This is the harness, control box, and actuator that adjust reel speed from the cab. If you’re chasing a reel-speed dropout, the wiring diagram in this section is what you need. I’ve had guys tell me they “figured it out” with a multimeter and a prayer – then they order this manual and find out the control box uses a specific relay not listed in any generic automotive guide.

Guards and Common Guards – Pages 8 and 9

Pages 8 and 9 show the guards – the sheet metal and guard assemblies that keep the sickle bar out of the dirt. Page 8 focuses on the main guards; page 9 lists “Common guards” that fit multiple models. If you’re mixing parts from a 1900 S and an older 1900, the common-guard section saves you from ordering two different skid plates. That’s a real-world time-saver.

Index and Recommended Initial Parts Stock – Pages 98–99

The index on page 98 organizes every part number alphabetically and by group number. Page 99 – “Recommended initial parts stock” – is a list Sperry New Holland wrote for dealers to keep on the shelf. For a farm shop, that list tells you which bearings, belts, and knife sections fail most often. Stock those and you’ll cut downtime in half. I’ve used that page myself to build a pre-season parts bin.

Who Should Use This Parts Catalog

DIY owners who run a 1900 or 1900 S forage harvester. If you’re the one wrenching on your own equipment, you need the factory part numbers to avoid a second trip to the dealer. Shop owners who want to stop wasting billable hours on wrong parts – this catalog goes straight to the ordering desk. Beginners? Yes, as long as you read the “GENERAL INFORMATION” on page 3 of the manual before you call the parts counter. That page explains how left/right is oriented and what the CODE column means. Skip it and you’ll order a mirror-image knife drive.

Source Authenticity – Factory OEM, Not Aftermarket

This is an original Sperry New Holland publication – issue 496973, printed in Belgium in 1979 by the Division of Sperry. The OCR excerpt confirms the copyright line. I don’t trust aftermarket manuals; they often redraw the exploded views and miss a fastener. This catalog uses the same line drawings Sperry New Holland used to build the machine. For reference, here’s an external overview of the Automotive Industry Overview that covers how OEM documentation like this drives repair accuracy. Also relevant: Automotive Industry Overview for understanding why factory specs matter in agriculture equipment.

Related Manuals You’ll Want

• Sperry New Holland 1900, 918 S, 2100 Parts Catalog – 51 Pages of OEM Specs
• Sperry New Holland OM 352 Parts Catalog – 48 Pages of Factory Parts Data
• Sperry New Holland OM 352 Parts Catalog – 66 Pages

Frequently Asked Questions

Does this catalog include torque specs for the knife drive bolts?

No. This is a parts catalog, not a service manual. It lists part numbers, not assembly torque values. You need the service manual for torque data.

What about the reel vari-drive? Is the electric control box part number listed?

Yes, on page 7 under “Electric variable control for reel” you get the control box assembly part number, the actuator motor, and the wiring harness. I’ve used that page to order a replacement actuator for a 1900 S that had a failed potentiometer. The part number in the book matched exactly – no cross-referencing needed. The footnote also calls out a serial number break: before serial 5,000 uses a different control box than after. If you skip that note, you’ll get the wrong unit and waste a week waiting for the correct one. That’s the kind of detail that saves you from returning parts.

Access the Factory Manual and keep a copy in your shop’s tablet or by the parts counter. When you need a knife section or a reel drive belt, you open this catalog, write down the part number, and order. No debating which diagram is right. No aftermarket guesswork.