Part of the Yanmar Parts Manuals.
The crank is out, the rod caps are marked in order, and the crank pin metals show copper: guess at a replacement part number now and the whole bottom end pays for it. Publication 0CR10-G78700 is Yanmar's own parts catalog for the 3TNV70-DPE, the mini digger specification of this small three cylinder diesel, and every reference number in it comes straight from the factory.
The 26 pages work through the complete engine: cylinder block, gear housing, cylinder head and bonnet, camshaft and driving gear, crankshaft and piston, the lubricating oil and cooling water systems, fuel injection pump, governor, injection valves, fuel line, starting motor, and generator, closing with the gasket set and short block listings. The preface explains Yanmar's interchangeability marks and effective machine numbers, so you can tell which listing fits your serial range.
The PDF is bookmarked for fast navigation and prints cleanly, so the page you need can lie on the bench and collect fingerprints while you order.
What's Inside This Yanmar 3TNV70-DPE (Dingo Mini Digger) Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Preface. | 2-3 | Ref. No., Lev. (Level), Interchangeability Mark, Effective Machine No., Remarks Mark |
| Content. | 4 | - |
| Cylinder Block | 5 | Cylinder Block Assy, Camshaft Bush, Thrust Bearing, Head Gasket, Main Bearing Assy, Main US0 Metal |
| Gear Housing | 6 | Gear Case Cover Assy, Oil Seal, Pump Cover Assy, Relief Valve, Spring, Inner Rotor, Outer Rotor |
| Flywheel Housing & Oil Sump | 7 | Flywheel Housing, Flywheel Cover Cap, Oil Seal, Oil Sump Spacer, Lub. Oil Sump Assy |
| Cylinder Head & Bonnet | 8 | Nozzle Protector, Nozzle Gasket, Valve Cap, Cylinder Head Assy, Intake Valve, Exhaust Valve, Valve Spring, Spring Retainer |
| Exhaust Manifold | 9 | Manifold Gasket, Silencer Gasket, Stud |
| Camshaft & Driving Gear | 10 | Tappet, Push Rod, Camshaft Assy, Idle Shaft, Idle Gear Assy, Idle Gear Bush, Pump Gear |
| Crankshaft & Piston | 11 | Crankshaft Assy, Crankshaft Gear, Flywheel Assy, Ring Gear, Crankshaft V-pulley, Piston w/ Ring, Piston Ring Set, Connecting Rod Assy |
| Lub.Oil System | 12 | Dipstick Guide, Lub. Oil Dipstick, Lub. Oil Filter Assy, Oil Inlet Pipe Assy, Oil Pressure Switch, Lub. Oil Pipe, Joint Bolt Assy |
| Cooling Water System | 13 | Water Pump Assy, Gasket, Cover, Water Pump Gasket, Round Gasket, Water Pump V-pulley, A35 V-belt, Cooling Fan |
| Fuel Injection Pump | 14-15 | Fie Assy, Camshaft, Camshaft Support, Plunger w/ Barrel, Flange, Spring Retainer, Plunger Spring, Tappet Assy |
| Governor | 16 | Case Gasket, Governor Case Cover, Cover Gasket, Governor Case Assy, Link, Governor Lever Shaft, Control Shaft Assy, Control Lever |
| Fuel Injection Valve | 17 | Injection Valve Assy, Nozzle Holder, Adjusting Shim Set, Pipe Retainer, Injection Pipe Assy, Fuel Oil Pipe Assy, Fuel Pipe, Return Pipe Assy |
| Fuel Line | 18 | Fuel Strainer Assy, Spring, Lever, Strainer Cup, Retaining Ring, Element Spring, Strainer Element, Filter Bracket |
| Starting Motor | 19 | Starter, Yoke Assy, Armature Assy, Clutch Assy, Sub, Housing Assy, Switch Assy |
| Generator | 20 | 15A Generator, Generator Spacer, Belt Adjuster, Starting Switch, Diode, Current 20A Limiter, Grow Relay, Timer |
| Gasket Set | 21 | Head Gasket, Nozzle Protector, Nozzle Gasket, Valve Stem Seal, Bonnet Gasket, Bonnet Cover Gasket, Manifold Gasket |
| Short Block | 22 | Short Block Assy, Cylinder Block Assy, Tappet, Camshaft Assy, Crankshaft Assy, Piston Assy, Connecting Rod Assy, Crank Bearing Assy |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Generator Current Output | 15 A | p. 20 |
| Current Limiter Rating | 20 A | p. 20 |
Yanmar 3TNV70-DPE (Dingo Mini Digger) Common Problems This Manual Covers
Fuel system will not stay bled
If the engine demands repeated bleeding after filter work, the leak path is usually a fuel strainer, water separator, or cracked pipe assembly pulling air. The Fuel Line section identifies each strainer, bracket, filter, and fuel oil pipe assembly by Yanmar reference number so you replace the actual culprit.
Manual Section: Fuel Line p. 18Hard starting with smoke
Tired injection nozzles are a classic cause of hard starting and smoke on this three cylinder diesel. The Fuel Injection Valve section lists the complete injection valve assembly, nozzle holder, adjusting shim sets, and injection pipe assemblies so a nozzle refresh starts with the right numbers.
Manual Section: Fuel Injection Valve p. 17Engine starts, then stalls
Starts followed by a stall usually trace to fuel delivery: a weak fuel feed pump, sticking control rack, or worn plunger and barrel. The Fuel Injection Pump section breaks the pump down to the plunger with barrel, delivery valve assembly, control rack, and fuel feed pump assembly.
Manual Section: Fuel Injection Pump p. 14Surging idle or engine will not stop
Governor spring, weight assembly, and stop solenoid faults show up as hunting at idle or an engine that ignores the shutoff. The Governor section lists the case assembly, control shaft, lever and weight assemblies, springs, and the stop solenoid for ordering.
Manual Section: Governor p. 16Overheating from a weeping water pump
A water pump seal that starts weeping will eventually cost you coolant and cylinder head temperature. The Cooling Water System section covers the water pump assembly, its gasket, the V-pulley, and the cooling fan, so the fix goes in as a matched set of parts.
Manual Section: Cooling Water System p. 13Low oil pressure light at idle
Before condemning the bottom end, check the cheap parts: the oil pressure switch, lube oil filter assembly, and oil inlet pipe assembly are all itemized in the Lub.Oil System section, along with the dipstick and guide.
Manual Section: Lub.Oil System p. 12Bottom end knock at teardown
Once the sump is off and the metals are out, ordering by guesswork risks the wrong bearing or ring set going back in. The Crankshaft & Piston section lists the crankshaft assembly, crank pin metal assemblies, connecting rod assemblies, and pistons with rings by exact reference number.
Manual Section: Crankshaft & Piston p. 11Frequently Asked Questions
Which engine does this parts catalog cover?
It covers the Yanmar 3TNV70-DPE, the mini digger specification of the 3TNV70, under Yanmar publication number 0CR10-G78700. Check the model code on your engine nameplate against 3TNV70-DPE before ordering; the preface explains the effective machine number and interchangeability marks used throughout the listings.
Is this a service manual with torque specs and clearances?
No. This is the factory parts catalog: parts listings with Yanmar reference numbers, levels, and interchangeability marks for every engine system. It does not give cylinder head torque sequences, valve lash, or bearing clearance figures, so pair it with a service manual when you need those numbers.
Does it help when rebuilding the bottom end?
Yes. The Crankshaft & Piston section lists the crankshaft assembly and gear, crank pin metal assemblies, connecting rod assemblies, and pistons with rings, so once your crank and bores are measured you can order the correct replacement parts by Yanmar number. p. 11
Does it cover the electrical side of the engine?
Yes. The Starting Motor section breaks the starter into yoke, armature, clutch, housing, and switch assemblies, and the Generator section covers the 15 A generator along with its 20 A current limiter. p. 20
What format is this Yanmar 3TNV70-DPE manual in?
You get a 26-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print specific sections of this manual?
The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
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