This is the Ford 6600 parts catalog, an illustrated breakdown of the four-cylinder agricultural tractor built from 1975 to 1981. Across 724 pages it lays out exploded figure diagrams with part numbers for nearly every assembly on the machine, often listed under the New Holland name as well.Sections span wheels and weights, brakes and handbrake, front axle and steering, rear axle and center housing, the hydraulic system and linkage, engine, transmission and PTO, cooling, fuel and air systems, electrical and lighting, plus cab, seats, decals, and accessories.To find a part, use the figure-number index at the front and Adobe search to jump straight to the right diagram. It is the reference to keep beside you when ordering correct components for a repair, restoration, or routine service on your 6600.
What's Inside This Ford 6600 4 CYL AG Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Wheels & Weights | - | - |
| Brakes & Handbrake | - | - |
| Front Axle, Steering & Differential | - | - |
| Rear Axle & Center Housing | - | - |
| Hydraulic System & Linkage | - | - |
| Engine & Related Parts | - | - |
| Transmission & PTO | - | - |
| Cooling System | - | - |
| Fuel & Air Systems | - | - |
| Electrical System & Lighting | - | - |
| Instrument Cluster | - | - |
| Seat Assemblies | - | - |
| Cab, HVAC & Electrical | - | Romeo, Michigan, Class 3 Fit, Carriage, Castle Nut, Category, Carriage Bolt, Closed Center Load Sensing |
| Decals & Shift Patterns | - | - |
| Accessories & General | - | - |
| General Information | - | Abbreviations, Metric/Inch Hardware Conversions |
Every system also includes hex slotted nut, safety frame, screw, seat, sekura cab, self locking screw, self-tapping, self-tapping screw, separate, service only, set screw, shell, short wheel base, shoulder, side, side flashers, side headlamps, side lights, side shift backhoe, single, single clutch, single filter, single lever hydraulic lift, single spool, slotted, slow moving vehicle, spacer, special, special order, speed, speedometer, spool, spring pin, square, square nut, stabilizer bars, standard, steering, step bolt, stop lamps, straddle mount, super, super comfort seat, support, sweden, swinging drawbar, switzerland, synchronized, synchronized manual shift, and synchronized shuttle shift.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Battery replacement | BCI 4DLT, 810CCA | p. 425 |
| Starter motor drive & relay assy. replacement | 4-1/2" Dia. | p. 428 |
| Solenoid replacement | Start Year: 01/01/1975 | p. 438 |
| Terminal, Male Blade | Start Year: 08/01/1976 | p. 359 |
| Ground wire | Start Year: 01/01/1975 | p. 362 |
| Air cleaner assy. replacement | 6" (152.4mm) | p. 298 |
| Fuel filter element replacement | Start Year: 01/01/1975 | p. 293 |
| Hydraulic oil filter replacement | Start Year: 05/01/1979 | p. 120 |
Ford 6600 4 CYL AG Common Problems This Manual Covers
Slow or jerky hydraulic lift
The three-point lift going slow, jerky, or losing hold is a common Ford 6600 complaint tied to the pump, valves, and lift cover. This section lays out the hydraulic lift and linkage parts so you can order the right components.
Manual Section: Hydraulic System & LinkageRepeated power steering leaks
Owners report blown gaskets and leaks around the power steering and cover area. The front axle, steering, and differential section breaks down the steering gear, pump, and related parts for replacement.
Manual Section: Front Axle, Steering & DifferentialHard starting in cold weather
Weak cranking or a no-start usually traces to the battery, terminals, starter, or solenoid. The electrical system and lighting section lists these parts with their figure numbers.
Manual Section: Electrical System & LightingAir in the fuel system
Diesel starting and running trouble often comes from air intrusion, a clogged fuel filter, or injection pump supply issues. The fuel and air systems section covers filters, pumps, and injection parts.
Manual Section: Fuel & Air SystemsOverheating under load
Loss of power and overheating on a working tractor points to the radiator, water pump, or cooling passages. The cooling system section identifies the radiator and water pump components.
Manual Section: Cooling SystemClutch or PTO slippage
Slipping under load or PTO trouble usually means worn clutch or PTO parts. The transmission and PTO section breaks down the clutch, transmission, and power take-off assemblies.
Manual Section: Transmission & PTOFrequently Asked Questions
What does this catalog contain?
It is an illustrated parts catalog with exploded figure diagrams and part numbers for the Ford 6600 four-cylinder tractor. It is for identifying and ordering correct parts, not a step-by-step repair manual.
Which tractor and years does it fit?
It covers the Ford 6600 four-cylinder agricultural tractor built from 1975 to 1981, often listed under the New Holland name as well.
How do I find a specific part?
Use the figure-number index at the front, then the Adobe search feature to jump straight to that figure. Groups such as Hydraulic System and Linkage and Engine and Related Parts organize the diagrams.
Does it list engine and fuel system parts?
Yes. The engine and related parts and fuel and air systems sections break down the block, pistons, injection pump, filters, and related components with part numbers.
Is this Ford 6600 4 CYL AG TRACTOR Parts Catalog a digital download?
Yes, it downloads instantly. The full 724-page searchable Parts Catalog is yours right after payment, ready to open on a laptop, tablet, or phone in the shop.
Am I able to print pages from this manual?
No restrictions: the PDF is DRM-free. Print whatever sections you want to carry out to the shop. Standard letter or A4 paper works fine.












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