Description

Caterpillar 773B 2008 Parts Catalog

You know the drill. You tear down a hoist line on a 773B, find a blown hose, and start digging through aftermarket catalogs. Half the part numbers don’t cross, and the other half are superseded without a note. That burns time and money. This Caterpillar 773B 2008 Parts Catalog fixes that because it’s the actual factory document – 21 pages of direct-from-Caterpillar hose management data. No translation errors, no third-party shortcuts. Just what Caterpillar Inc. published for serial number 63W machines.

Caterpillar 773B 2008 Parts Catalog: What’s Inside

This is a parts catalog, not a repair manual. If you need torque specs or service intervals, you want the service manual. What this gives you is the exact breakdown of hose assemblies, couplings, and lines groups for the air conditioner, hoist, and oil cooler systems. Each assembly is listed with its part number, then each coupling (reusable or permanent) gets its own number. On page 1 you’ll find the 5T-4556 Lines Group – Air Conditioner with part numbers like 2G-1178, 2G-1181, and the corresponding hose type 1543J. That page alone saves an hour of cross-referencing.

Is This a Repair Manual or a Parts Catalog?

Parts catalog. Pure part-number lookup. If you’re rebuilding a hose assembly on a 773B dump truck, you need to know which permanent coupling or reusable coupling goes where. Page 2 covers the 5T-2965 Lines Group – Hoist (Part 1 of 2) and shows that hose 5T-6946 uses coupling 6V-4675 on both ends (reusable) and 8T-3721 permanent couplings. That level of detail is useless for diagnostics but deadly accurate for ordering. Pair it with a service manual for step-by-step replacement steps.

3 Reasons to Trust Factory OEM Part Numbers

First, aftermarket catalogs often combine different revisions into one listing. The 2008 edition is specific to the 773B with SN 63W. Second, the factory calls out hose types – XT-3ES, 1543J – so you match the pressure rating. Third, you get the permanent vs. reusable coupling distinction. On page 5, the oil cooler lines group shows a “NO REBUILD” note for part 5T-7009. An aftermarket book would never flag that. You’d waste time trying to rebuild a non-serviceable assembly.

Get the Right Coupling the First Time

Look at page 4: the 5T-6855 Lines Group – Oil Cooler lists 5T-7007 and 5T-7006 hoses, both using 4S-7498 couplings. If you grab a random coupling from the bin, you might get a different thread pitch or seal angle. This catalog tells you exactly which coupling goes with which hose. That’s the difference between a ten-minute replacement and a come-back leak. The factory also includes the marketing division stamp – Caterpillar Inc. © 2008 – so you know this isn’t a scanned copy from a third party.

It’s only 21 pages, but those pages are dense. Each line group has a table: assembly part number, then columns for reusable coupling 1, reusable coupling 2, permanent coupling 1, permanent coupling 2, and hose type. You don’t have to flip through a 900-page book to find a single hose. This is targeted. If you work on fleet 773Bs, this catalog belongs on the workbench.

Hose Management: Factory Specs You Can Rely On

The table of contents is repetitive – “Permanent Coupling 1” and “Reusable Coupling 1” repeated – because the catalog is organized by line group, not by coupling type. That’s fine once you understand the layout. Each page covers one assembly group. You read left to right: assembly P/N, then coupling options, then hose type. The 2008 publication year ensures you get the part numbers current to that model year, including any late updates. Don’t use a 2005 catalog on a 2008 truck – the hoist lines changed. This manual is correct for the 63W serial number range.

Related manuals you should have on hand: Caterpillar C15 2006 Parts Catalog – Factory OEM 884 Pages”>Caterpillar C15 2006 Parts Catalog – Factory OEM 884 Pages, Caterpillar Elevated Sprocket Tractors Parts Catalog – 971 Pages”>Caterpillar Elevated Sprocket Tractors Parts Catalog – 971 Pages, and Caterpillar Undercarriage Parts Catalog – 866 Pages OEM”>Caterpillar Undercarriage Parts Catalog – 866 Pages OEM. For a broader understanding of how these systems integrate, check the Automotive Industry Overview.

Does this catalog include torque specs for hose fittings?

No. This is a parts catalog, not a service manual. You’ll find the part numbers for couplings and hoses, but tightening torque is in the service manual.

Will this work for earlier 773B models with different serial numbers?

This edition covers serial number prefix 63W only. Other serial ranges used different hose routing and coupling part numbers. If your machine has a different prefix, you need the catalog specific to that range. However, many permanent and reusable couplings carried over. Check the part numbers against your existing hoses. We also carry the Caterpillar general hardware catalog if you need cross-references.

Stop digging through mismatched aftermarket cross‑references. Access the Factory Manual from AutoRepairManuals and get the exact part numbers Caterpillar intended for your 773B. That 21‑page PDF prints cleanly for the workbench or lives on your tablet in the shop. Either way, you order once.