John Deere 644J Loader Parts Catalog PC9341 – Complete PDF Manual

Description

John Deere 644J Loader Parts Catalog PC9341

This is the complete John Deere 644J Loader Parts Catalog, document number PC9341, published for machines manufactured from 2004 onward. Whether you are maintaining a single 644J wheel loader or running a fleet, this catalog gives you the exact part numbers, assembly breakdowns, and exploded-view diagrams you need to order the right components the first time. The catalog is organized by system and includes both an alphabetical index and a numerical index for fast lookups.

File Details

• Manual Type: Parts Catalog
• Brand: John Deere
• Model: 644J Loader
• Document Number: PC9341
• Publication Date: 23-OCT-03 (revised 25-MAR-04)
• Language: English
• Page Count: 500+ pages
• File Format: PDF
• Manufactured: 2004 and later

Chapters Covered

The John Deere 644J Parts Catalog PC9341 is organized into major sections covering every system on the machine. The alphabetical index spans all components from A/C and heater blower switches through wiper blades, with cross-references to the correct grid and page. The numerical index at the back lists every part number in the catalog with its corresponding grid location and page number.

• Introduction and Customer Information — How to use the catalog, part number verification, and customer support information
• Serial Number Location — Locations for all six serial number plates: product identification, transmission, hydraulic pump, engine, axles, and control valve
• Product Identification Number Plate — Breakdown of each character position on the PIN plate
• Engine Serial Number Plate — Character breakdown for the engine serial number format
• Axles, Differentials and Suspension Systems — Front and rear axle assemblies, differential cases, input pinion and ring gear sets, final drives, dual brake assemblies, axle mounting parts, axle stop, differential lock lines, axle oil circulation pump and motor, axle coolers, and axle breathers
• Transmission — Torque converter, transmission input shaft, transmission housing, speed sensor, transmission pump, transmission cover and gasket, internal oil lines, control valve manifold, transmission control valve, output shaft, converter relief and minimum pressure valves, power take-off, and clutch assemblies
• Engine — Crankshaft, main bearings, crankshaft oil seal housing, camshaft, rocker arm cover, timing gear cover, magnetic pickup, pistons and connecting rods, cylinder liner, cylinder block, short block, overhaul kit, oil pan, dipstick, oil pump, oil filter and housing, vent hose, cylinder head and valves, lift straps, exhaust manifold, fuel injection pump, nozzles, electronic control unit, intake manifold, turbocharger and oil lines, water pump, water manifold and thermostat, engine oil cooler, oil cooler bypass tubes and adapter, primary and secondary fuel filter and lines, starter, torsional damper, flywheel, engine gasket kits, cold weather starting aids, engine air heater, engine coolant heater, radiator, radiator hoses, oil cooler and fan shroud, fan blade, fan hub and support, fan drive hydraulic pump and motor, fan drive hydraulic hoses, reverse fan drive, engine speed control and sensors, air cleaner, pre-cleaner, filters and hoses, muffler and exhaust pipe, and engine mounts
• Operator’s Station — Cab, cab glass, cab door, cab monitor console, canopy monitor console, operator station front pedestal, headliner and domelight, canopy, rear window, headliner, drip rail, cab trim, seat base, fire extinguisher, canopy trim, front and rear cab mounts, window washer and hoses, front windshield wiper, rear windshield wiper, wiper mounting brackets, cab shields, roof, horn, backup alarm, slow moving vehicle emblem, outside mirror, inside rear view mirror, coat hook, ash tray, cab left side console cover, fresh air housing cover, cab and canopy floor mat, sun visor, steering wheel, column and linkage, lower steering column, steering column covers, right hand cab console, seat and seat suspension, seat suspension, wrist-arm rest, access platform and steps, close mounted steps, engine compartment step, HVAC module, HVAC module components, HVAC module (heater only), HVAC module components (heater only), A/C compressor, A/C condenser, heating and air conditioning outlet ducts, and A/C field kit
• Main Hydraulic System — Hydraulic pump (steering and loader), hydraulic pump repair kits, hydraulic pump control valves, hydraulic oil reservoir, pressure regulator valve fittings, pressure regulator valve components, and main hydraulic lines
• Loader — Loader buckets, bucket pins, cutting edge, loader bucket teeth and shanks, JAGZ loader bucket cutting edges, loader bucket cutting edge, waste handler bucket, loader frame, loader boom and linkage pin, loader linkage, boom cylinder lock, two spool loader control valve, three spool loader control valve, four spool loader control valve, inlet valve section with relief valve, bucket valve section, boom valve section, auxiliary valve section, outlet valve section, fifth function valve section, two spool control valve plumbing, three spool control valve plumbing, four spool control valve plumbing, two lever pilot controller, two lever pilot controller components, two lever pilot controller with aux., single and dual auxiliary controller components, joystick pilot controller, joystick pilot controller components, joystick pilot controller with aux., auxiliary controller components (for use with joystick), dual joystick pilot controller, auxiliary joystick pilot controller components, ride control valve, accumulator and hydraulic hoses, ride control valve, pin disconnect valve components, pin and axle disconnect valve and hoses, quick coupler pin disconnect kit, loader bucket and boom cylinder pins and fittings, loader boom cylinder, loader bucket cylinder, loader return-to-dig actuator and sensor, loader boom kick out/return to carry sensor, and return to carry
• Electrical System — Batteries, battery cables and battery clamps, battery disconnect switch and cable, alternator (55 amp), alternator rear cover (55 amp), alternator (80 amp), alternator rear cover (80 amp), drive hi-beam lamp and guard, front turn and marker light, door-activated domelight switch, stop, turn and tail lights, front and rear work lamp, license plate bracket and light, main wiring harness, cab wiring harness, spin control components, dash module wiring with joystick gear selection, cab monitor and alarm, HVAC wiring, converter (5 amp), converter (10 amp), programming kit, and return to dig harness
• Frame, Chassis or Supporting Structure — Engine frame, engine frame steering cushions, bottom fuel tank guard, transmission bottom guard and front bottom guard, cylinder-fitting rock guards, main counterweight, and engine frame weldment
• Steering System — Secondary steering, steering valve and fittings, steering valve seal kit, steering cylinder hydraulic hoses, steering cylinder fittings and lubrication hoses, and steering cylinder
• Service Brakes — Brake valve, pedals and linkage, park brake solenoid valve, brake accumulator, park brake solenoid valve hydraulic lines, brake valve hydraulics, and driveline bearing and parking brake
• Miscellaneous Vehicle — Decals and trademarks (English), cab labels and decals, decals and labels (French), decals and labels (Spanish), canopy labels and decals, Torq-Gard Supreme and Plus-50 engine oil, coolant conditioner and engine part lubricants, lift hooks, and environmental drain kit
• Sheet Metal and Styling — Engine side shields, hood, frame locking bar, transmission shields, battery covers, grille and grille housing, front fenders and fender supports, right and left rear platforms, full coverage front fenders, and full coverage rear fenders
• Safety, Convenience and Miscellaneous — Radio, radio speakers and antenna
• Alphabetical Index — A complete A-to-Z listing of every component, assembly, and part name in the catalog with grid and page references
• Numerical Index — Every part number in the catalog listed sequentially with grid, key, and page number for fast lookup

What This Parts Catalog Does for You

A parts catalog is only as good as its organization, and PC9341 is built for speed. Every assembly is broken down into its individual components with clear exploded-view illustrations that show exactly how parts fit together. The key numbers on each illustration correspond directly to the parts list, so you can trace a component from the drawing to its part number without guesswork. Whether you are rebuilding a boom cylinder, replacing a final drive seal, or ordering a new hydraulic pump, the catalog shows you every related part — seals, O-rings, bearings, shims, and fasteners — so you can order everything you need in one go instead of making multiple trips to the dealer.

The alphabetical index is exhaustive. If you know the name of the part you need, you can find it in seconds. The numerical index is equally valuable: if you have a part number stamped on a component and want to know where it belongs, you can look it up and see exactly which assembly and page it appears on. This is especially helpful when you are working on a machine that has been through several owners and may have mixed or modified components.

The serial number section is another practical feature. Every 644J loader has six serial number plates — product identification, transmission, hydraulic pump, engine, each axle, and control valve. The catalog explains where each plate is located and how to read it, which matters because John Deere used serial number breaks to introduce running changes. Knowing your serial number range helps you identify which version of a part your machine uses, avoiding the frustration of ordering a component that does not fit.

Why This Manual Matters

Ordering the wrong part is expensive and time-consuming. A parts catalog that matches your exact machine eliminates that problem. The John Deere 644J Parts Catalog PC9341 covers the 644J Loader with the 6081H engine and provides the full parts breakdown for every major system. With 500+ pages of detailed illustrations and part listings, it gives you the same parts information your John Deere dealer uses, but in a format you can access instantly and keep on hand in the shop or office.

For anyone maintaining or repairing a 644J, this catalog is not just a reference — it is a working tool. The exploded views help you understand how assemblies come apart and go back together, which is invaluable when you are doing a repair for the first time. The part numbers ensure you get the right components, and the cross-references help you track down parts that may have been superseded or updated. If you own a 644J, this catalog belongs in your library.

Get Instant Access

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This John Deere 644J Loader Parts Catalog PC9341 is delivered as an instant PDF download. There is no shipping, no waiting, and no physical book to store. Once you complete your purchase, you can download the file immediately and access it on any device — computer, tablet, or smartphone. The PDF is printable, so you can print the pages you need for the job and keep them at the machine without worrying about damaging your original. Whether you are a professional mechanic, a fleet manager, or an owner-operator, this catalog gives you the parts information you need, when you need it.