Yanmar 6N270 & 6N280 Series Diesel Engine Parts Catalog Manual – Instant PDF Download

Description

The Yanmar 6N270 & 6N280 Series Diesel Engine Parts Catalog is the illustrated parts reference for the 6N270-EN, 6N280-UN, 6N280-SN, 6N280-EN, 6N280L-UN, 6N280L-SN, 6N280L-EN and 6N280L-GN engine variants. Published as the 2nd revised edition in February 1998 under document number Y00H2492, this catalog provides exploded-view illustrations, exact part numbers, descriptions and quantities for every major assembly on the six-cylinder, water-cooled, four-cycle diesel engine — from the cylinder block and crankshaft to the turbo-charger, fuel injection pump and cooling circuit.

File Details

• Manual type: Illustrated parts catalog
• Brand: Yanmar
• Models covered: 6N270-EN, 6N280-UN, 6N280-SN, 6N280-EN, 6N280L-UN, 6N280L-SN, 6N280L-EN, 6N280L-GN
• Engine type: Vertical, water-cooled, four-cycle diesel
• Language: Bilingual Japanese / English
• Document number: Y00H2492
• Edition: 2nd revised edition
• Date published: February 1998
• Page count: 200+ illustrated pages
• File format: PDF

Chapters Covered

• Cylinder Block, Covers & Liners
• Cylinder Head, Valve Train & Camshaft
• Crankshaft, Pistons & Connecting Rods
• Turbo-Chargers & Air Systems
• Exhaust Manifolds, Silencer & Expansion Joint
• Lubrication System
• Cooling Water System
• Fuel Injection

Cylinder Block, Covers & Liners

Every casting and cover on the main block is illustrated in exploded view: the cylinder block and liners, oil pan and blank covers, cooling chamber and CW. chamber cover, cylinder side covers, air chamber and cam chamber covers, gear case and gear case cover, oil shield and flywheel side covers, LO. main gallery cover, main metal, thrust housing and camshaft bearing, crankcase relief valve and the turning device mounting bracket. Part numbers, descriptions and quantities are listed for each component.

Cylinder Head, Valve Train & Camshaft

Full parts breakdown for the cylinder head and sensor seat, valve rocker arms and bonnet, camshaft assemblies, idle gear for camshaft driving, and the old-type valve rocker arm/plunger LO. pump assembly. Covers cylinder-head fasteners, O-rings, gaskets, valve-train hardware, and the camshaft and its drive gears in complete detail.

Crankshaft, Pistons & Connecting Rods

Dedicated sections for the 6N270 and 6N280 piston and connecting rod assemblies — pistons, rings, piston pins, connecting rods, bearings, bolts and washers — plus the complete crankshaft, reamer bolts, flywheel, front driving coupling and counter gear (torsional). Each assembly has its own exploded-view diagram and parts table.

Turbo-Chargers & Air Systems

Parts listings for the VTR251, VTR254 and NR24 turbo-chargers, their mounting brackets and exhaust outlet connect pipes, the YPC94 air cooler with mounting bracket, air cooler blank flanges and labels, air duct A and air duct B sections, the intercooler heater YPC79-H32 with air cylinder and link device, plus the turbo washing needle valve, drain pipes and connect pipes.

Exhaust Manifolds, Silencer & Expansion Joint

Exhaust manifold assemblies, connecting pipes, exhaust manifold covers, the YMK/SWG silencer and exhaust coupling flange, fire-proof covering sections, expansion joints and the full exhaust outlet pipework for both VTR and NR24 turbo-charger configurations.

Lubrication System

The largest section of the catalog. Covers the lubricating oil pump and drive, priming motor pump, spare LO. pump and gauge panel, LO. cooler and its mounting bracket, anti-corrosive FE, thermostat valve, pressure regulating valve and flange, dip-stick, level switch, No.1 and No.2 LO. strainers, automatic self-cleaning strainer and sludge checker, oil filter and wire mesh strainer, filter paper type strainer for the MET26SR turbo, difference pressure indicator, and every LO. pipe from pump inlet through strainer and cooler to the cylinder inlet and return. Also includes the rocker arm lubrication tank and pipework, FO. injection pump plunger and pinion oiling pipes, LO. wing pump, 3-way valve and spectacle flange.

Cooling Water System

CW. pump assemblies in both XR and XL configurations, spare CFW./CSW. pump and gauge panel, fresh water cooler, CW. pipes from cylinder inlet to turbo inlet and outlet, CW. collect pipes for the flywheel side and anti-flywheel side, CW. outlet pipes and throttle plates, plus the CW. piping for the VTR251/254 and VTR254 turbo-chargers and the air cooler heater circuits.

Fuel Injection

Fuel injection pump chamber cover, LO. filter for FO. injection pump oiling, and the LO. piping for the plunger and pinion oiling systems, with part numbers for each banjo bolt, pipe and seal.

How the Catalog is Organized

Each of the 138+ figures opens with an exploded-view illustration showing every component in its exact position, followed by a parts table listing the reference number, part number, description, quantity and — where applicable — applicability codes by engine model. Revision notes from the 2nd revised edition are preserved, so you can match parts against the exact engine variant you are working on. The catalog is bilingual throughout: Japanese and English descriptions appear side by side in every parts table.

Model Coverage at a Glance

The catalog explicitly lists parts applicability against the 6N270-EN, 6N280-UN, 6N280-SN, 6N280-EN, 6N280L-UN, 6N280L-SN, 6N280L-EN and 6N280L-GN variants. The introduction table gives each model’s continuous rated output and speed rating, so you can confirm which engine configuration you have before ordering parts. Bore and stroke are listed as 270 mm × 380 mm for all six-cylinder variants, with direct injection and water cooling throughout.

Why This Parts Catalog Matters

Ordering the wrong part on a six-cylinder marine diesel can cost days of downtime and hundreds of dollars in returns. This Yanmar 6N270 6N280 parts catalog removes the guesswork by giving you the exact part number, the assembly it belongs to, and how many you need. Whether you are overhauling the top end, chasing an oil leak, replacing a turbo-charger mounting bracket, or rebuilding the cooling circuit, the exploded views and part number tables in this PDF tell you precisely what fits your engine variant.

Written and illustrated for the 6N270 and 6N280 series engines, the catalog covers every major system from the cylinder block to the CW. outlet pipe, with applicability codes that let you cross-check any part against the 6N270-EN, 6N280-UN, 6N280-SN, 6N280-EN, 6N280L-UN, 6N280L-SN, 6N280L-EN and 6N280L-GN engine variants. It is the reference you keep open on the workshop bench or the engine room desk while you work.

IMAGES PREVIEW

Delivered as an instant PDF download after payment, with no shipping and no waiting. Open it on any laptop, tablet or smartphone, zoom into the exploded views as far as you need, and print the pages you are working from so you can mark them up in the engine room. This is the Yanmar 6N270 6N280 parts catalog your shop needs for accurate, first-time-correct parts ordering.