Part of the Yanmar Parts Manuals.
An idle gear off a 3TNV76-CPE looks a lot like the idle gear off half a dozen other small Yanmar diesels, right up until the one you ordered will not mesh. This 25-page parts catalog, Yanmar publication 0CW10-M05300EN issued in 2005, is what keeps that from happening: every assembly on the engine is drawn as an exploded view with the exact part number beside each piece.
Coverage runs from the cylinder block, gear housing, and crankshaft and piston group through the fuel injection pump, governor, injection valve, and fuel line, plus the lubrication and cooling water systems, starting motor, generator, gasket set, and short block.
Whether the engine sits in its machine or apart on a stand, you can put a worn part next to its diagram, confirm the number, and have the replacement on the bench before reassembly starts, so the job ends with the engine running instead of stalled on a second parts order.
What's Inside This Yanmar 3TNV76-CPE Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Reference Materials | 2 | Preface, Contents, Parts No. Index |
| Cylinder Block | 4 | Cylinder Block Assy, Camshaft Bush, Main Bearing, Thrust Bearing, Head Gasket, Bearing |
| Gear Housing | 5 | Gear Case, Gear Case Cover Assy, Oil Seal, Cover Assy, Relief Valve, Spring, Inner Rotor, Outer Rotor |
| Flywheel Housing & Oil Sump | 6 | Flywheel Housing, Cap, Oil Seal, Oil Sump Spacer, Oil Sump Assy, Gasket.liquid |
| Cylinder Head & Bonnet | 7 | Lifter, Nozzle Protector, Nozzle Gasket, Valve Cap, Cylinder Head Assy, Valve Guide, Intake Valve, Exhaust Valve |
| Exhaust Manifold | 8 | Gasket, Silencer Gasket, Stud |
| Camshaft & Driving Gear | 9 | Tappet, Push Rod, Camshaft Assy, Idle Shaft, Idle Gear Assy, Pump Gear, Flange |
| Crankshaft & Piston | 10 | Crankshaft Assy, Crankshaft Gear, Flywheel Assy, Ring Gear, V-pulley, Piston Assy, Piston Ring Set, Ring |
| Lub.Oil System | 11 | Oil Dipstick, D68XL65 Filter Assy, Oil Inlet Pipe Assy, 5KG Switch, Oil Pipe, Joint M8 Bolt Assy, Dipstick Guide |
| Cooling Water System | 12 | Water Pump Assy, Cover, Gasket, Water Pump Gasket, 8X1 Gasket, V-pulley, A37 V-belt, Fan |
| Fuel Injection Pump | 13-14 | Injection Pump Assy, Camshaft, Camshaft Support, Plunger Assy, Spring Retainer, Plunger Spring, Tappet Assy, Adjusting Shim Set |
| Governor | 15-16 | Gasket, Governor Case Cover, Governor Case Assy, Mark : Link, Shaft, Control Lever, Spacer Assy, Governor Lever Assy |
| Fuel Injection Valve | 17 | Injection Valve Assy, Nozzle Holder, Pipe Retainer, Injection Pipe Assy, Joint, Return Pipe Assy, Gasket, Hose Clip |
| Fuel Line | 18 | Fuel Filter Assy, Valve Spring, Lever, Cover, Retaining Ring, Spring, Element, Pipe Joint |
| Starting Motor | 19 | - |
| Generator | 20 | 15A Dynamo Assy, 6201UUC3 Bearing, Adjuster, Current 20A Limiter, Generator Spacer, Glow Relay Assy, Timer, Starting Switch |
| Gasket Set | 21 | Head Gasket, Valve Stem Seal, Nozzle Protector, Bonnet Gasket, Silencer Gasket, Nozzle Gasket, Water Pump Gasket |
| Short Block | 22 | Gasket Set, Head Gasket, Valve Stem Seal, Nozzle Protector, Bonnet Gasket, Silencer Gasket, Nozzle Gasket, Water Pump Gasket |
Yanmar 3TNV76-CPE Common Problems This Manual Covers
Hard starting from fuel starvation
Cold-start trouble on this engine usually traces to a restricted filter, air leaking into the lines, or contaminated fuel. When a line, joint, or fitting needs replacing after you bleed the system, the Fuel Line diagram identifies each piece by part number so you order once.
Manual Section: Fuel Line p. 18White smoke and fouled injectors
Poor atomization from a worn or fouled nozzle shows up as white smoke and rough running. If pop testing condemns an injector, this section breaks out the injection valve assembly and its hardware for reordering.
Manual Section: Fuel Injection Valve p. 17Overheating from cooling system wear
A tired water pump, sticking thermostat, or leaking housing lets temperature climb under load. The Cooling Water System diagram lays out the circuit so you can identify and replace the failed component rather than guess at it.
Manual Section: Cooling Water System p. 12Low oil pressure
Falling oil pressure is a bearing killer on any small diesel, and contaminated oil or a failing pump is often behind it. The Lub.Oil System section identifies the lubrication components by part number before the damage spreads to the crank.
Manual Section: Lub.Oil System p. 11Slow or intermittent cranking
Aging starters and corroded connections leave the engine cranking slowly, especially in cold weather. When the starter itself is the fault, this section shows the starting motor and its mounting hardware for replacement.
Manual Section: Starting Motor p. 19Surging or hunting engine speed
Worn governor springs and linkage let rpm wander at idle and under steady load. The Governor section's exploded view is the only practical way to name each small spring, lever, and pin inside before you open it up.
Manual Section: Governor p. 15Oil burning past valve stem seals
Hardened valve stem seals let oil down the guides, showing as smoke at startup and steady oil consumption. The Cylinder Head & Bonnet section lists the head assembly, intake and exhaust valves, and stem seals for a top-end refresh.
Manual Section: Cylinder Head & Bonnet p. 7Worn crank bearings and rings
Low compression and rod knock at the end of a hard life call for a bottom-end rebuild. The Crankshaft & Piston section covers the crankshaft, piston and ring set, connecting rod, flywheel, and bearings so the whole rotating assembly can be ordered from one diagram.
Manual Section: Crankshaft & Piston p. 10Frequently Asked Questions
Which engine does this catalog cover?
The Yanmar 3TNV76-CPE diesel engine, per Yanmar publication 0CW10-M05300EN issued in 2005. It covers the complete engine, from the Cylinder Block through the Short Block, regardless of what equipment the engine is installed in.
Does it include torque specs or repair procedures?
No. This is a parts catalog: exploded diagrams and part numbers for every assembly on the engine. For valve lash, bearing clearances, and the cylinder head torque sequence you need the Yanmar service manual; this book is for identifying and ordering the parts correctly.
Are the fuel system components covered?
Yes. The Fuel Injection Pump section covers the pump, followed by the Governor, Fuel Injection Valve, and Fuel Line sections, so the whole fuel circuit from pump to injector can be identified by part number. p. 13
Can I find a complete overhaul gasket set?
Yes, the Gasket Set section lists the gasket set for the engine, and individual gaskets also appear within their own system diagrams, such as the Exhaust Manifold and Cylinder Head & Bonnet sections. p. 21
How will I receive this Yanmar 3TNV76-CPE Parts Catalog?
A 25-page Parts Catalog in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Is this Yanmar 3TNV76-CPE Parts Catalog printable?
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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