1990–1999 New Holland 4630 Tractor Parts Catalog (P/N 707-164)

This illustrated parts catalog covers the 1990–1999 New Holland 4630 three-cylinder agricultural all-purpose tractor. Numbered assembly drawings and matching parts lists identify components for cab, drive, regional, and production configurations.

• Engine and fuel system: Exploded views of engine internals, turbocharger assemblies, DPA rotary injection pumps, fuel filters, injectors, and cold-start equipment.

• Transmission and PTO: Parts breakdowns for synchronized and non-synchronized transmissions, Dual Power controls, creeper equipment, IPTO clutches, and PTO valves.

• Steering, axles, and brakes: Manual and power steering, front and rear axle assemblies, wheel configurations, service brakes, and trailer-brake components.

• Hydraulic lift: Lift and draft controls, lift cylinders, flow-control components, remote valves, hydraulic pumps, and loader-related auxiliary pump equipment.

• Electrical equipment: Pictorial harness layouts and parts breakdowns for starting, charging, lighting, instruments, and electrical controls.

• Cab and tractor equipment: Standard and low-profile cab parts, heaters, seats, fenders, ROPS assemblies, drawbars, hitches, and stabilizers.

It is suited to mechanics and owners who can identify their tractor’s equipment and use exploded drawings to select replacement parts.

Parts Identification and Catalog Scope

Entries list reference numbers, quantities, part numbers, and application notes. Shared listings mention related tractor models; those references apply to individual components rather than establishing complete coverage of every model named.

This is a parts reference for repair planning and ordering. Workshop troubleshooting, overhaul sequences, and adjustment procedures require the appropriate service documentation. The exploded views identify component relationships rather than providing a disassembly sequence.

Engine Components and Fuel-System Variations

Engine drawings separate the cylinder block, head, crankshaft, valve train, pistons, connecting rods, and turbocharger. The DPA rotary injection pump has upper- and lower-half component views, while separate fuel-system listings distinguish emissionized equipment.

Headland-to-Mondial replacement notes identify tapered connecting rod F2NN6200BA and matched piston-set requirements. These details help avoid incompatible piston and rod combinations that could damage the engine.

Steering, Axles, Wheels, and Brakes

Manual and power steering gears, columns, pumps, and cylinders have individual parts views. The steering motor breakdown notes an internal revision to assembly E9NN3A244BA without a change to its assembly number, making the component-level application notes important when ordering subparts.

The Axle Shaft & Planetary Assemblies view distinguishes standard and waterproof NH-E components. Different cassette seals are listed for those builds; an incorrect seal selection can compromise sealing and bearing protection.

Wheel listings distinguish round and square discs, manual and power adjustment, and weight arrangements. Brake coverage includes service-brake components, the transmission handbrake, and trailer-brake equipment.

Transmission and IPTO Parts Matching

Transmission listings separate housings, shafts, gears, synchronizers, and shift controls by configuration. IPTO Clutch & Related Parts and PTO Clutch Valves drawings identify the clutch components and their controls.

Serial-specific notes identify PTO shaft service-kit applications and rear axle seal changes, helping match replacement hardware to the existing assembly before parts are ordered.

Hydraulic Lift, Cab, and ROPS Equipment

Lift Cylinder & Related Parts drawings accompany listings for lift linkage, remote valves, and engine- or center-housing-mounted pumps. An auxiliary pump kit is listed for loader applications.

Cab and ROPS entries distinguish equipment-specific components. The fixed-to-foldable ROPS replacement notes also identify associated fender changes.

Fuel and hydraulic work require pressure relief and secure chassis support; use the applicable workshop procedures before disassembly.

Electrical Harness and Component Views

Electrical System and Harness, Transmission & Auxiliary Fuel Tank drawings show component and harness locations. Starter, alternator, instrument-cluster, and lamp listings provide assembly breakdowns. These are pictorial parts views rather than electrical circuit schematics.

A Preview of Spindle and Axle Seal Dimensions

These examples are a small selection of the component dimensions included for parts identification.

The early front axle listing in figure 03A01 identifies high-clearance spindles at 12.2 inches and low-clearance spindles at 8.5 inches.

The axle-shaft and planetary listing distinguishes a standard 130 x 160 x 17 mm cassette seal from a 130 x 160 x 20 mm version for the waterproof NH-E axle. These are catalog component dimensions, not wear limits or adjustment targets.

Searchable Parts Lists and PDF Contents

Figure search and navigation: Parts-list text and figure headings are searchable. Embedded bookmarks lead to the index, main catalog, and reference sections; individual assemblies can be located by searching their figure codes. Small callouts in the busier harness drawings are easier to read when enlarged.

Supplied as one printable, 632-page PDF: 607 pages of illustrated parts listings, six figure-index pages, 14 abbreviation-reference pages, two hardware-conversion pages, one search-guide page, one additional front page, and one blank page. All of these pages are already included in the total.