Yanmar ViO25-3 Excavator Parts Catalog Y00Y4820 – ViO25-3 CG1A Spare Parts Manual PDF

This comprehensive parts catalog is the essential reference for anyone maintaining, repairing, or restoring a Yanmar ViO25-3 (CG1A) crawler excavator. Published under catalog number Y00Y4820 for the European market, this illustrated parts manual provides complete parts listings for the Equipment, Vehicle, and 3TNV76-NBVA engine assemblies, with exploded views and part numbers that let you identify and order exactly the right component for your machine.

Whether you’re a dealer, workshop technician, or owner-operator, accurate parts identification is critical. This Yanmar ViO25-3 parts catalog removes the guesswork, giving you the factory part numbers, visual references, and interchangeability information you need to keep your excavator running.

What This ViO25-3 Parts Catalog Contains

The catalog is divided into five main sections, each covering a major functional area of the machine:

1. Equipment

This section covers the complete working equipment of the excavator. You’ll find detailed parts breakdowns for the arm assembly, bucket link, boom, and all cylinders — boom cylinder, arm cylinder, bucket cylinder, swing cylinder, and blade cylinder. The hydraulic pump, travel motor, swing motor, control valve sections (blade, turn, PTO, arm/swing, travel, boom, and bucket lock), remote control valve, oil cooler, hydraulic oil tank, and the full hydraulic piping system are all documented. Also included are the greasing points and 3rd circuit components.

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2. Vehicle

The Vehicle section covers the upper structure and undercarriage. This includes labels, suction and exhaust pipes, accelerator, engine mount, radiator and mount, fuel tank and fuel lines, battery, electric wiring and equipment, work lamp, sprocket and roller assemblies, and all control equipment (lock lever, travel lever, blade lever, swing pedal, low-high, and PTO). The turning frame, swing bearing, covers (boom, side, under, frame, valve, travel), step, instrument panel and arm rest, seat mount, bonnets (rear, right, front), duct assembly, hydraulic pump, cylinders, travel motors, swing motor, accumulator, swivel joint, control valves, oil cooler, hydraulic oil tank, and all hydraulic piping are also covered. You’ll also find the boom assembly, bracket boom assembly, arm assembly, bucket link assembly, and blade assembly.

3. Engine — 3TNV76-NBVA

The engine section is dedicated to the 3TNV76-NBVA diesel engine. It covers the cylinder block, gear housing, flywheel housing and lubrication sump, cylinder head and bonnet, exhaust manifold and silencer, camshaft and driving gear, crankshaft and piston assembly, lubrication oil system, cooling water system, fuel injection pump, governor, fuel injection valve, fuel pipe, starting motor, generator, and a complete gasket set and tools.

4. Maintenance Kit

This section lists the service kits for scheduled maintenance intervals: 50H, 250H/750H, 500H, 1000H, and 1000H+.

5. Pins and Bushings Kit

Dedicated kits for the bracket boom, arm, bucket link, and bucket pin, essential for rebuilding worn pivot points.

How the Parts Listings Work

Each parts listing includes the position number (which corresponds to the number on the exploded illustration), the level (parent/child assembly relationship), the part number, any interchangeability marks, a description, and the quantity required. The interchangeability marks (N, Q, R, S, F, K) indicate whether a part has been updated and whether the new version can replace the old one — vital information when servicing machines that may have had running production changes. The cut-in and cut-out columns (shown as ~|-> and ->|~) indicate when a part was introduced or discontinued during production, helping you verify the correct part for your machine’s serial number.

Why This Parts Catalog Is Essential

Unlike a service manual that explains repair procedures, a parts catalog tells you exactly which part you need. This is critical when:

• Ordering replacement parts and needing the correct part number to avoid costly returns.
• Rebuilding hydraulic cylinders and needing every seal, O-ring, and bushing identified.
• Repairing the undercarriage and needing the correct track link, shoe, roller, or sprocket.
• Working on the 3TNV76-NBVA engine and verifying component versions.
• Maintaining a fleet and stocking the right consumables and wear parts.

With exploded diagrams and comprehensive parts listings, this catalog eliminates the guesswork from parts ordering. It’s the reference you need to keep your ViO25-3 operating at its best.

Document Details

• Manual Type: Illustrated Parts Catalog
• Brand: Yanmar
• Model: ViO25-3 (CG1A)
• Machine Type: Crawler Excavator
• Engine: 3TNV76-NBVA
• Parts Catalog Number: Y00Y4820
• Language: English
• File Format: PDF
• Page Count: 167 pages

Get Instant Access

This Yanmar ViO25-3 excavator parts catalog is delivered as an instant PDF download — no shipping, no waiting. View it on any device, print the pages you need for the workshop, and keep it as a permanent reference. With the complete parts breakdown for the Equipment, Vehicle, and Engine assemblies, you’ll have the information you need to order the right parts the first time.