Part of the New Holland Parts Manuals.
Need the right part number for your 1975-1978 Ford 550 Tractor Loader Backhoe? This 523-page Ford 550 parts catalog PDF covers the 550 and 550 3 CYL with exploded views of every assembly on the machine. You get complete parts lists for the loader and backhoe hydraulics: cylinder assemblies broken down to rods, pistons, glands, and seal kits, plus control valve sections detailed to the last O-ring and spring. Engine coverage runs from the 3-cylinder gas and diesel blocks through pistons, crankshaft, and full gasket and overhaul kits. Diagrams separate the 26.6 GPM Webster hydraulic pump from the 28.5 GPM pump assembly, so you order the right unit the first time. No more squinting at a worn casting number and hoping. Bookmarked with a live text layer; type the part name, jump to the diagram, place your order.
What's Inside This Ford New Holland 550 Tractor Loader Backhoe Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Distributor Drive & Governor Assembly, Diesel, Single Fuel Filter, Dual Fuel Filter Assembly, Fuel Injection Pump, Rotor, Fuel Injector Assembly, Carburetor Assembly, Holley, Fuel Pump Assembly, Gasoline, Fuel Filter Kit, Air Cleaner Assembly, Throttle & Foot Accelerator Controls | |
| Cooling System | Radiators & Related Parts, Water Pump & Related Parts | |
| Engine | Hydraulic Oil Filter Assembly, Hydraulic Oil Reservoir Breather & Separator, Cylinder Block, Head & Related Parts, Gasoline, Diesel, Crankshaft, Flywheel & Related Parts, Camshaft, Rocker Arm, Valves & Related Parts, Pistons & Connecting Rods, Oil Pump & Oil Pan, Sump, Engine Gasket Kits, 3-Cylinder, Engine Overhaul Kits, Torque Converter, Oil Distributor, Oil Pan, Engine Primer Ether System, Block Heater, Engine Hood & Grille, Engine Side Covers | |
| Electrical System | Less Lights, Europe, LH, RH, Headlamp Assembly, ROPS, North America, Rear Lamp, Parking Lamps, Side & Flasher, Less Cab, Rear Lamp Assembly, Lamp Assembly, Emergency Warning, Implement Lamp Assembly, Rear Side & Turn Signal, Plow Lamp Assembly, Rear Fog Lamp Assembly, Side Shift, License Plate Mounting & Lamp Assembly, License Plate Mounting, Lamps, Cab, Trailer Lamp Socket, Battery & Related Parts | |
| Clutch & Transmission | Manual Reversing Transmission Case, Shift & Related Parts, Torque Converter, Clutch & Gears, 4 X 4, Torque Converter Transmission Control Lever, Single Clutch Assembly, 13" | |
| Rear Axle, Differential & Brakes | Rear Wheels, Rear Wheel Weights, 24", Non-Adjustable, 28", Brakes & Brake Controls, Handbrake, Emergency Brake & Controls, Rear Axle Differential & Related Parts, Rear Axle Differential Lock Linkage, Rear Axle Center Housing & Related Parts | |
| Front Axle & Steering | Front Wheels, 2WD, 4WD, Front Axle, Power Steering & Related Parts, Power Steering Motor & Column, Power Steering Pump & Reservoir, Power Steering Cylinder Assembly, Dual Cylinder, FWD, Ae3, Differential Box, Driveshafts, Reduction Gears, Steering Arms, Drive Shaft & Shield, Rear Drop Box, Internal Parts of Center Housing, Front Support | |
| Hydraulics & 3-Point Hitch | Hydraulic Reservoir & Pump Drive, Hydraulic Filter & Tubes, Control Valve Assembly, Two Spool, Three Spool, Swinging Drawbar, Hanger & Related Parts, Hydraulic Pump, Cessna, Webster, Hydraulic Pump Assembly, Vickers, Lift Arm & Linkage, Hydraulic Lines & Hoses, Lift Cylinder Assembly, Bucket Cylinder Assemblies, Hydraulic Control Parts, Auto-Dig, Center Pivot, Sideshift, Europe, Hydraulic Control Lines, Heavy Duty, North America | |
| Loader, Backhoe & Attachments | Loader Controls, Decal, Loader, Decals, Backhoe, Buckets, Cubic Yard, Swing Post & Related Parts, Center Pivot, Sideshift, Europe, Swing Motor Carriage Assembly, Boom Assembly & Related Parts, 19, Buckets - 19, Stabilizer Pads | |
| Body & Operator Station | Cab Rear Panels, Side Shift, Europe, Swivel Seat Assembly, Original, Replacement, Swivel Suspension Seat Assembly, Deluxe Suspension Seat Assembly, Bostrom-Viking, Seat Assembly, Nh-E, Fenders, Platform & Tool Box, Frame & Related Parts, Europe Na, Tractor Cab & Related Parts, North America, Cab Panels, Mat & Trim, Rear & Side, Cab Electrical System & Wipers, Cab Heater & Related Parts, Cab & Related Parts, Mats & Trim, Cab Air Conditioner, Heater & Related Parts | |
| Decals & Accessories | Windshield Washer, Accessory, Europe, Identification Decals, Decals, Tractor, Shift Pattern Decals, Kit, Instruction & Safety Decals, Decal Kits, Quebec, Tool | |
| Other Components | Front End Weight, Manifold & Exhaust System, Gasoline, Diesel, Torque Converter, Filter & Cooler Tubes, Diesel Cold Start, Electrical System, North America, LH, RH, Starting Motor & Related Parts, 4-1/2" Dia, Starting Motor Assembly, 5" Dia, Distributor Assembly, Motorcraft, Mallory, Instrument Panel, Cluster & Related Parts, Reflectors, Nhna, Compressor & Related Parts, Air Conditioning |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Pump, Hydraulic, Webster, 26.6 GPM | 26.6 GPM | p. 211 |
| Pump Assy., 28.5 GPM | 28.5 GPM | p. 213 |
| Front End Weight | 325 lbs | p. 8 |
| Power Steering Pump Relief Valve Pressure | 1600 PSI | p. 31 |
| Alternator Output | 32 Amp | p. 275 |
| Hydraulic Pump Output | 26.6 GPM | p. 211 |
Ford New Holland 550 Tractor Loader Backhoe Common Problems This Manual Covers
Ford 550 loader hydraulics slow and weak, unsure which replacement hydraulic pump the tractor takes
Check the main pump exploded view starting on page 72 for the pump, reservoir, filter, relief valve, and suction line breakdown. Verify which pump your unit carries before ordering: the Webster pump rated 26.6 GPM is listed on page 211, and the 28.5 GPM pump assembly on page 213. Match the part number to your serial range.
Manual Section: Main Pump, Reservoir, Filter, Relief Valve, Suction Line p. 72Steering heavy and power steering pump leaking, can't identify correct pump rebuild parts
Check the Power Steering Pump and Reservoir exploded view on page 30 for the body, bearing, seals, valve, spring, and filter breakdown. Note the relief valve shown on page 31 is set at 1600 PSI; order the matching relief valve and spring if yours has been swapped, and cross-check the reservoir cap and gear listings.
Manual Section: Power Steering Pump & Reservoir p. 30Power steering cylinder weeping at the gland, need seal kit and gland part numbers
Check the Power Steering Cylinder Assembly exploded view on page 33; it breaks out the tube, rod, piston, gland, and the seal kit as one part number. Order the complete kit instead of loose seals. The pump relief holds 1600 PSI per page 31, so a worn gland seal shows up fast on full-lock turns.
Manual Section: Power Steering Cylinder Assembly p. 33Battery not charging and alternator failing, need the correct replacement alternator part number ordered
Verify which alternator your tractor left the factory with before ordering anything; page 275 lists three outputs: 32 Amp, 51 Amp, and 72 Amp. Read the tag on your existing unit, match it against the parts list on that page, and pull the mounting hardware numbers from the same section.
Manual Section: Cylinder Block, Head Assembly, Insert, Plug, Sender, Bolt, Washer, Dowel p. 275Front counterweights missing off the tractor, need weight and mounting hardware part numbers
Check page 8 for the 325 lbs front end weight listing, or page 10 if your unit ran the heavier 785 lbs setup. Order the support assembly and plates from the weight parts list, and grab fresh 5/8 inch carriage bolts and flat washers listed on page 57 while you are in there.
Manual Section: Support Assy., Plate, RH, Weight, 325 Lb. p. 8Frequently Asked Questions
What are the torque specifications for the front end weight bolts?
The front end weight bolts (Ref. 6) are 3/4"-10 x 2" Grade 5 bolts, and they should be tightened to the standard torque for that size and grade. The manual specifies 8 of these bolts are required for the 325 lb weight. p. 8
What is the replacement specification for the engine oil filter?
The replacement engine oil filter for the 550 tractor is part number 86546614. For European models, part number 87800068 is used. p. 105
What is the torque specification for the rear axle differential housing bolts?
The rear axle differential housing bolts (Ref. 9) are 5/8"-11 x 2" Grade 5 bolts. There are 42 of these bolts used in the assembly. p. 60
What is the specification for the fuel filter element?
The fuel filter element kit for the CAV type filter is part number 83937061, which includes the gasket and seals required for replacement. p. 176
Will this Ford New Holland 550 Parts Catalog download right away?
A 523-page Parts Catalog in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Does this Ford New Holland 550 manual allow printing?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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