Description

Carrier CT3-44-TV Parts Catalog – OEM Factory Specs for the D722 Diesel

If you’re ordering parts for a Carrier CT3-44-TV (D722) diesel engine and you’re relying on some third-party parts list you found online, stop. You’re wasting time. The Carrier CT3-44-TV Parts Catalog is the only document that shows you exactly what Carrier put in the crankcase, cylinder head, and fuel system from serial number 5A0001 onward. I’ve seen techs order the wrong camshaft or crankshaft because they used a generic parts index. That mistake costs a day of downtime and a restocking fee. This 36-page catalog fixes that. It’s the factory original, not a reprint. For background on the D722 engine family, check this Wikipedia article on diesel engines.

Engine Serial Number Matrix: Order the Right Parts

Page ii of this catalog contains the engine serial number matrix and ordering instructions. If your CT3-44-TV serial number starts with 5A0001 or higher, you’re in the Tier 2 closed breather range. That matters because earlier engines used different cylinder head gaskets and fuel camshaft assemblies. The matrix tells you exactly which revision your engine is, so you don’t order parts for the wrong build. Don’t skip this page. It’s two pages of information that saves you from buying a main bearing case that doesn’t fit.

Crankshaft, Camshaft, and Cylinder – Detailed Explosions

Section 16 covers the crankshaft and pistons. Section 8 covers the camshaft and idle gear shaft. Each part is numbered and keyed to the part number index in the back. You get exploded diagrams showing how the cylinder assembly goes together. If you need to replace a connecting rod or a valve rocker arm, the diagram shows the orientation and the exact fastener count. I’ve seen aftermarket catalogs omit the thrust washer on the crankshaft — this one doesn’t.

Carrier CT3-44-TV Parts Catalog: What You Actually Get

Open the table of contents and you’ll see 24 numbered sections covering every major system: crankcase, oil pump, gear case, cylinder head, valves and rocker arms, main bearing case, camshaft, fuel camshaft assembly, speed control plate, pulley, flywheel, nozzle holder and glow plugs, governor, injector assembly, crankshaft and pistons (two sections actually — 16 and 16 again, with different content), water pump, thermostat, valve cover, oil pan, intake manifold, exhaust manifold, starter (two pages), and tension pulley. That’s 36 pages total. Each page is scanned from the original Carrier Transicold service parts list. The part number index at the back lets you cross-reference any number. No guesswork.

Fuel Camshaft Assembly and Governor: Factory Specs

Section 9 covers the fuel camshaft assembly, and section 14 covers the governor. These two systems interact to control injection timing and engine speed. The parts catalog shows each spring, lever, and shaft. If you’re rebuilding the fuel system, you need the correct nozzle holder and glow plug parts from section 13. Don’t mix up the injector assembly (section 15) with the fuel camshaft — they’re separate but easy to confuse without the diagrams. Carrier CT2-29-TV CT3-44-TV Workshop Manual complements this catalog with assembly torque specs if you’re doing a full teardown.

Does This Manual Include Ordering Instructions?

Yes. Page ii gives you the exact protocol for ordering replacement parts from Carrier. It tells you to reference the engine serial number, part number, and quantity. If you’ve ever tried to order a part without the factory number, you know how frustrating that call is. This catalog ends that. It also includes general notes about hardware finishes and sealants. That’s information you won’t find in a generic aftermarket PDF.

No fluff.

For other Carrier equipment, see Carrier XZ16K.65, XZ35K.65 Parts Catalog – OEM Factory Steering Parts and Carrier XZ25K.45.15A, XZ35K.45A Parts Catalog – 76 Pages OEM. For a broader understanding of diesel engine architecture, this Wikipedia article on diesel engines offers background.

If you work on the D722, this parts catalog is the foundation for every repair. Access the Factory Manual now and keep it in your shop binder next to the torque charts.

Does this catalog include torque specifications for the cylinder head?

No. This catalog lists part numbers only. You need the workshop manual for torque specs.

Can I use this catalog to order parts for a CT3-44-TV with serial number below 5A0001?

The catalog states “Beginning With Serial Number 5A0001” on the cover. Earlier engines may have different part numbers for the crankcase, camshaft, and fuel system components. Carrier typically releases separate parts catalogs for each production run. If your engine serial falls below that range, you need the earlier catalog. Cross-referencing part numbers from this catalog to an older engine is risky because Carrier introduced design changes with the Tier 2 closed breather. I have seen a technician order a cylinder head gasket from this catalog for a pre-5A0001 engine and it did not align with the dowel pins. Always confirm by serial number first. The engine serial number matrix on page ii of this catalog explains the breakpoints.