Need the exact OEM part numbers for your 1981-1993 New Holland 6610? This 957-page parts catalog walks every assembly on the tractor, from front axle spindles and steering gear through the 8-speed transmission gears, rear differential, fuel injection pump variants, and full cab assemblies. Expect 250 pages of illustrated parts lists with complete exploded views, component cross-references, and figure-search indexing across the engine, drivetrain, electrical, cab, and brake sections. The hydraulic pump assembly is rated at 9 GPM output, while the SNAPTITE remote coupler calls out part number 86508779 for an exact OEM match. When the parts counter hands you a substitute because they lack the right catalog, jump straight to the figure by assembly bookmark, confirm the number, and order the correct piece rather than a close match.
What's Inside This New Holland 6610 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Front Wheel Assembly | - | Front Wheel Assy., Cone & Roller Assy., Retainer Assy., Rim Assy. |
| Front Bumper, Accessory | - | Bumper, Front, Nut, Bolt |
| Standard Rear Wheels, Manual Adjustable | - | Disc, Rim Assy., Nut, Bolt |
| Brakes & Brake Controls | - | Housing, Disc Assy., Link, Stud, Ball, Spring, Pin, Nut |
| Transmission Handbrake | - | Lever, Grip, Clevis, Actuator Assy., Roll, Shroud, Rod, Link |
| Hydraulic Trailer Brakes | - | Trailer Brake, Reservoir Assy., Cap Assy., Hose Assy., Cylinder Assy., Support, Valve Assy., Head Assy. |
| Front Axle, Steering & Related Parts, Manual | - | Link Assy., End Assy., Rod Assy., Pin Assy., Anchor, Spindle Assy., Bearing Assy., Deflector |
| Steering Gear Assembly | - | Nut & Shaft Assy., Roller, Column Assy., Arm, Gear Assy., Housing Assy., Tube, Retainer |
| Power Steering Pump & Reservoir | - | Pump & Reservoir Assy., Body, Bearing & Bushing Assy., Flange, Head, Elbow, Gear, Valve Assy. |
| Transfer Case, FWD, L/Transmission Handbrake | - | Piston, Drive, Driven, Carrier, Collar, Slinger, Dust, Housing |
| Rear Axle, Differential & Related Parts | - | Shaft Assy., Retainer & Seal Assy., Carrier Assy., Spider, Pinion Assy., Adapter, Coupling, Gear |
| Hydraulic Lift Cover & Related Parts | - | Cover Assy., Knob, Vent, Lever Assy., Stop Assy., Quadrant, Yoke, Filter Assy. |
| Engine, Cylinder Block, Head & Related Parts | - | Engine Assy., Short Block Assy., Intake Valve, Exhaust Valve, Plugs, Sender Assy., Thermostat Assy., Connection |
| 8-Speed Non-Sync. Transmission, W/ or L/ Dual Power | - | Transmission Assy., Fork, Rail, Stop, Tube Assy., Breather, Arm, Plunger |
Every system also includes washer.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Nut, Lock, Prevailing Torque (M12 x 1.75) | CL 8 | p. 67 |
| Coupler, Remote Hydraulic, SNAPTITE, #6800 | 86508779 | p. 247 |
| Hose (length) | 70mm Lg. | p. 186 |
| Pump Assy. (GPM) | 9 GPM | p. 522 |
| Ball & Guide Assy. (Category) | Cat II | p. 266 |
| Shaft (PTO) | 25.40" | p. 362 |
| Valve Assy. (Pressure) | 1050 PSI | p. 108 |
New Holland 6610 Common Problems This Manual Covers
New Holland 6610 remote hydraulic coupler leaking, need correct SNAPTITE replacement part number p. 247
Check the remote hydraulic coupling exploded view on page 247. The SNAPTITE #6800 coupler is cataloged as part number 86508779. Inspect the mating female half alongside it, since both halves typically wear together. Verify the part applies to your serial number range in the manual index before placing an order.
Manual Section: 05F07[A] MANIFOLD & COUPLERS (LEVERLESS)Hydraulic hose at implement connection weeping oil, can't identify the correct replacement part number p. 186
Locate the hydraulic hose listing on page 186, where the replacement hose is spec'd at 70mm length. Measure your existing hose end-to-end and match it against that spec before ordering. Cross-reference the exploded view to confirm fitting style and port size, since adjacent hoses in the same section share similar lengths and are easy to confuse.
Manual Section: 04C02 OIL FILL TUBEHydraulic pump assembly needs replacement, part number tag on failed unit is unreadable p. 522
Turn to page 522 and find the pump assembly listing, rated at 9 GPM for this tractor. Confirm your replacement order matches that flow spec before purchasing. Pull the assembly part number directly from the parts list on that page, then verify serial number applicability in the front index so you get the correct variant.
Manual Section: 10C01 HYDRAULIC PUMP ASSEMBLYThree-point hitch ball and guide assembly cracked, need correct Category II replacement part number p. 266
Find the ball and guide assembly entry in the Hydraulic Lift Cover exploded view. Page 266 confirms the spec as Category II. Note the part number from the adjacent parts list, then check your serial number range before ordering. Cat I and Cat II ball ends are dimensionally different and will not swap, so confirm the category before any purchase.
Manual Section: 05J01 QUICK HITCH LINKAGE & RELATED PARTS (NH-E)PTO shaft worn, unclear which part number covers the correct length replacement p. 362
Open the PTO shaft listing on page 362, where the shaft is spec'd at 25.40 inches. Measure your worn shaft against that dimension to confirm whether you need a full shaft replacement versus just a collar or coupling. Pull the part number from the exploded view on that page and cross-reference with the serial number range before ordering from your dealer.
Manual Section: 07D01 POWER TAKE-OFF ASSEMBLY (SINGLE SPEED)Frequently Asked Questions
What is the part number for the SNAPTITE remote hydraulic coupler on the New Holland 6610?
The SNAPTITE #6800 coupler is cataloged as part number 86508779 in the exploded view on page 247. Inspect the mating female half alongside it, as both halves typically wear together. Verify the part applies to your serial number range before ordering.
What flow rating and part number does the New Holland 6610 hydraulic pump assembly use?
The hydraulic pump assembly on page 522 is rated at 9 GPM. Confirm your replacement order matches that flow spec before purchasing and pull the assembly part number directly from the exploded view on that page.
What is the length specification for the New Holland 6610 PTO shaft?
The PTO shaft listing on page 362 specifies 25.40 inches. Measure your worn shaft against that dimension to determine whether you need a full shaft replacement or just a collar or yoke component.
What are the replacement specifications for hydraulic hoses?
Several hydraulic hoses appear with their own lengths. Two share part number D6NN18686C: one is cut to 170 inches, the other to 133 inches. A third hose, part number E4NN18686BA, is specified at 3840mm. Confirm the length you need against the listing before you order.
What format is this manual in?
It's a 957-page searchable PDF, ready to download the moment you order. It opens on any device, so you can pull it up on your phone right under the hood. No shipping, no waiting.
Is this New Holland 6610 Parts Manual printable?
Yes. Print as many copies as you like; there are no restrictions. Plenty of mechanics print just the section they need and carry it out to the shop floor.
Document Quality
This PDF is a scanned document with an OCR layer, allowing you to search and copy the full text. The text is generally crisp and easy to read, though some underlying scan artifacts and slight blurriness from the original document are visible. Diagrams are raster images, which appear somewhat pixelated when zoomed in, but their labels remain mostly clear. The pages are relatively clean with minor scan noise and occasional slight skewing, and there are no notable blank pages.
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