Description

Caterpillar 951C 1976 Parts Catalog – Factory OEM, 249 Pages

Nothing worse than ordering a part, waiting three days, then finding out it doesn’t fit because you used a third-party parts list. I’ve seen it cost a shop a full day of billable time. That’s why you need the real thing: the Caterpillar 951C 1976 Parts Catalog. This is the same 249-page book the dealer used in ’76. It covers the 951C Traxcavator within serial number range 86J2598 to 86J4041. If your machine falls outside that range, you need the matching edition – no cross-referencing.

249 Pages of Factory-Correct Part Numbers

You get a full 249 pages of exploded diagrams, part numbers, and quantities. No guessing which gasket fits. The alphabetical index on page 3 lets you jump straight to the group you need. Each illustration has a caption that tells you exactly which serial numbers it applies to. When there’s more than one design, they label it “First Type” or “Second Type” – and they mean it. You verify against your machine, not against a generic drawing.

Engine, Electrical, and Transmission: What’s Covered

The major sections are laid out in a quick reference guide inside the front cover. You’ll find Engine Related Items starting on page 12 – covers everything from the radiator to the fan drive, muffler, fuel lines, and governor control. Electrical system starts on page 21: battery, alternator, lighting, wiring. Transmission components are in the Power Train section beginning on page 39, including the torque converter, planetary transmission, and transfer gears. Each part is listed with its OEM number and the quantity used.

Why the 1976 Serial Number Range Matters

Many aftermarket catalogs mash multiple years into one diagram. That’s a problem when a bolt length changed at the factory. This Caterpillar book was published January 1976 specifically for serial numbers 86J2598 to 86J4041. If your 951C is outside that bracket, you need the Caterpillar 951C 1974 Parts Catalog or the appropriate edition. Using the wrong page leads to wrong parts and wasted money. Don’t trust a third-party reprint – get the OEM document that matches your machine’s build date.

Get the Right Parts with the Alphabetical Index

Open to page 3 and look up the component. Need the steering clutch? It’s in group five, page 64. Hydraulic lines? Page 111. The index lists every sub-assembly alphabetically so you don’t flip through all 249 pages blind. Once you’re on the right page, the illustration shows each serviceable part with an item number and the corresponding part number in the list below. Indented names mean that part belongs to the assembly above it – standard Caterpillar book logic.

Ordering Parts: The Factory Procedure

Page 2 of the manual spells out how to order. Quote the quantity, part number, part name, and machine serial number. If you’re unsure of the number, give your dealer a full description. The book includes conversion equivalent tables inside the back cover, and a quick reference chart inside the front cover. For service specifications, turn to page 136 in the Service Equipment & Supplies section – gasket kits, tools, even transfers. That page alone can save you from ordering a seal kit that doesn’t exist.

OEM vs. Aftermarket: The Parts Book Difference

I’ve used enough aftermarket parts catalogs to know they frequently copy from an older edition and miss revisions. This one is the original factory print from Caterpillar Tractor Co., Publications Division, Peoria, Illinois. Compiled by Betty J. Schmidgall. No third-party editing. If you want reliability, stick with the source. For related manuals, check the Caterpillar C15 2006 Parts Catalog – Factory OEM 884 Pages or the Caterpillar Elevated Sprocket Tractors Parts Catalog – 971 Pages if you work on the bigger iron.

For a broader look at how factory documentation supports the Automotive Industry Overview, remember that OEM specs are what keep equipment running safely. Another Automotive Industry Overview source confirms the value of factory data over aftermarket copies. It’s your time and your machine – don’t compromise.

Does this catalog cover the 951C outside the serial number range 86J2598 to 86J4041?

No, it only covers that specific serial number range.

How do I find the correct part number for a component like the torque converter?

Use the alphabetical index on page 3 to locate the group – for the torque converter, look under “Torque Converter” in the Power Train section starting page 39. Each illustration caption notes the serial number applicability. If your 951C falls within 86J2598 to 86J4041, you use the diagram shown. If the caption says “First Type,” check the actual assembly on your machine to match it. The parts list under the illustration gives the item number, part number, and quantity. Cross-reference with the ordering instructions on page 2. Always quote the machine serial number to your Cat dealer – they can verify superseded parts if the original number has been updated. This level of detail keeps you from ordering a torque converter seal that doesn’t fit the oil cooler lines.

If you’re tearing down a 951C and need the right parts the first time, skip the guesswork. Access the Factory Manual and get the real data – the same one the dealer parts counter used in 1976.