Description

New Holland 939A3, 939A4, 939A6, 939N3, 939R3 Parts Catalog

You ever spend an hour flipping through aftermarket websites trying to find a part number for a slip clutch on a 939A4, only to order the wrong piece because the diagram was fuzzy? I have. That’s time you don’t get back, and money wasted on a part that doesn’t fit. This parts catalog is the factory document – the one the dealer uses when you call in and they ask for the serial number. It’s 76 pages of exploded views, group part numbers, and revision marks that tell you exactly what changed from the previous issue. No guesswork. No guessing which auger drive shaft works with which frame bundle. You get the OEM spec.

Models Covered in This Parts Catalog

This single catalog covers five auger base models and two row-crop variants. You’re looking at New Holland 939A3, 939A4, 939A6 for the auger bases, plus 939N3 and 939R3 for row crop heads. The table of contents also lists 939N4, 939N5, 939N6, 939R4, but those sections are partial – the main focus is on the five models listed in the title. If you’re working on a 939A6 with a pick-up assembly, you’ll find the finger pick-up group on pages 66 through 69. Need the slip clutch for a 939R3 row crop? That’s on pages 36 and 37. Every group has a page number, not just a section heading. That matters when you’re standing in the shop with grease up to your elbows.

Real Use: Ordering Parts for a 939A6 Auger Base

Let’s say the drive sprockets on a 939A6 are worn out. You pull the catalog, flip to the DRIVE GROUP, SPROCKETS section. The main drive group for the 939A3 is on pages 18 and 19. For the 939A4 it’s pages 20 and 21. Each exploded view has callouts with part numbers. You don’t need to cross-reference a third-party book. You write down the number, call your dealer, and the part shows up correct. That’s the difference between using a factory parts catalog and some aftermarket version that might have merged two revisions. This catalog replaces all previous issues – issue number 9506830 4 – so you’re working with the latest factory data.

What You Get in the Table of Contents

The catalog is organized by model group and sub-assembly. For the auger bases (939A3, 939A4, 939A6) you get: AUGER DRIVE (pages 12-15), AUGER HOUSING (page 16), DRIVE GROUP, SPROCKETS (18-21), FRAME AND FLOOR (22-25), SHIELDING (8-11), SLIP CLUTCH (page 17), SPREADER, FLOOR BUNDLE (18-20). For the row crops (939N3, 939R3) you get separate sections for CHAINBOARDS (38-43), DIVIDERS (powered and non-powered – pages 58-61 and 62-63), KNIFE and GATHERING CHAINS (50-53), RC80 CONVERSION KIT (page 54), and more. Every page number is printed in the catalog – no guessing where a group starts.

Why Factory OEM Beats Aftermarket Reprints

I’ve seen aftermarket catalogs that take a 939A3 diagram and label it as a 939A6 because they look similar. But the auger drive group on a 939A3 uses different sprockets than the 939A4. The OEM catalog keeps those separate – you can see the page numbers differ (18-19 vs 20-21). That’s not a mistake. That’s factory engineering. Aftermarket sellers often scan an old copy and lose the revision marks. This catalog came straight from the New Holland parts system. It’s in English, French, German, Italian, and Dutch. The file name says “28114006743”. That’s the factory part number for the catalog itself. If you’re ordering parts for a 939N3 or 939R3, you want the OEM reference, not a photocopy of a photocopy.

Related Manuals for Other New Holland Models

If you work on multiple machines, you might need Ford New Holland 853 1993 Parts Catalog for the older 853 header, or Ford New Holland 568 1991 Parts Catalog for the 568 windrower. There’s also Ford New Holland 1915 Tractor 1993 Parts Catalog – Section: Supplement if you’re dealing with tractor-driven pickups. These are all factory documents, same quality.

Frequently Asked Questions

Does this catalog include torque specs or repair procedures?

No. This is a parts catalog – exploded views, part numbers, and quantities. You identify the component, order the correct part. For torque values or service steps, you need the service manual. This catalog complements the repair manual but does not replace it.

Will this work for a 939N4 row crop?

Yes and no. The catalog lists models 939N4 and 939R4 in the table of contents, but only partially – side sheets and skid shoes are shown on pages 44-49. For the full 939N4 breakdown you may need a later issue. The five main models (939A3, 939A4, 939A6, 939N3, 939R3) are complete. Check the page numbers against your machine’s serial number if you’re outside those models.

How many pages is this catalog?

76 pages. Each page is a scan of the original factory document. No watermarks, no condensed layouts. You get the same page layout as the paper catalog.

Can I get a refund if it doesn’t cover my specific 939A6 serial number range?

Refunds are handled per site policy. But if you check the model list – 939A3, 939A4, 939A6, 939N3, 939R3 – and your machine falls into one of those, the catalog will have the correct parts groups. The issue number 9506830 4 is the latest; earlier issues are replaced. If your serial number predates this revision, some parts may have been superseded, but the catalog notes revisions in the diagrams.

You probably already know the frustration of ordering a part that doesn’t match the mounting holes because you trusted a generic diagram. This factory catalog eliminates that. 76 pages, real part numbers, proper grouping. When you need to rebuild a 939A4 auger drive or fix the pick-up on a 939R3, you pull this catalog, find the component, and order the exact piece. No back-and-forth with the parts counter. [Link: Automotive Industry Overview] might tell you about trends in ag equipment, but this catalog tells you what bolt goes where. Access the Factory Manual and keep it on your shop tablet. You’ll use it every season.