Need the exact part numbers for your 2004 Yanmar Vio20-3 crawler back-hoe? This 248-page parts catalog (OEM #0CK10-M39703EN) breaks down every single component with crisp exploded views. You get complete hardware breakdowns for the entire machine, spanning the track frame, hydraulic pumps, and heavy-duty boom assemblies. Open the catalog to find detailed parts lists paired with factory wiring diagrams to help you identify every last harness and relay. Confirm the exact dimensions of the 22.15X43 track link bush and verify the correct part numbers for your 15A fuses before placing a supply order. Stop wasting days waiting for the wrong hardware to arrive. Grab this bookmarked download, pull it up on your phone in the shop, and get the right numbers on the first try.
What's Inside This Yanmar ViO20-3 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Reference Materials | 2-8 | Tor-, - -30N41 |
| Label(Cabin)(Jp)(To M3F000) | 13-14 | Oil & Water Label, Grease Label, Grease Feed Label, Model Label, Rear Label, Label, Fan Label, Oiling Label |
| 155.(1A)Label(Cabin)(Jp)(From M3F001 to M3F855)(T Spec.) | 15-16 | Oil & Water Label, Grease Feed Label, Label, Fan Label, Oiling Label, Caution Label, Battery Label, Belt Label |
| 169.(1B)Label(Cabin)(Jp)(From M3F856)(Y Spec.) | 17-18 | Oil & Water Label, Grease Feed Label, Label, Fan Label, Oiling Label, Caution Label, Battery Label, Belt Label |
| Label(Canopy)(Jp)(To M3F000) | 19-20 | Oil & Water Label, Grease Label, Grease Feed Label, Model Label, Rear Label, Label, Fan Label, Oiling Label |
| 156.(2A)Label(Canopy)(Jp)(From M3F001) | 21-22 | Oil & Water Label, Grease Feed Label, Label, Fan Label, Oiling Label, Caution Label, Battery Label, Belt Label |
| 140.(2B)Label(4P Canopy)(Jp)(To M3F000) | 23 | Oil & Water Label, Grease Feed Label, Rear Label, Label, Fan Label, Oiling Label, Caution Label, Battery Label |
| 157.(2C)Label(4P Canopy)(Jp)(From M3F001) | 24 | Oil & Water Label, Grease Feed Label, Label, Fan Label, Oiling Label, Caution Label, Battery Label, Belt Label |
| Label(Quick Coupler)(Jp) | 25 | Vio Label Set, Label, Cover Label, Lock Label, Switch Label, Collar Z Label |
| Label(Canopy)(Ex)(To M3F000) | 26-28 | Front Label, Oil & Water Label, Model Label, Rear Label, Grease Label, Label, Fuse Us Label, Operation Label |
| 158.(4A)Label(Canopy)(Ex)(From M3F001) | 29-30 | Oil & Water Label, Grease Label, Label, Fuse Us Label, Operation Label, PTO Label, Accelerator Label, Crawler Label |
| Label(Crane)(Jp)(To M3F000) | 31 | Label |
| 159.(5A)Label(Crane)(Jp)(From M3F001) | 32 | - |
| Safety Label(Cabin)(Jp) | 33 | Label, Fan Label, Caution Label, Battery Label, Belt Label, Caution Tag Assy, Loading Label, Warning Label |
| Safety Label(Canopy)(Jp) | 34 | Label, Fan Label, Caution Label, Battery Label, Belt Label, Caution Tag Assy, Loading Label, Warning Label |
| 141.(7A)Safety Label(4P Canopy)(Jp) | 35 | Label, Fan Label, Caution Label, Battery Label, Belt Label, Caution Tag Assy, Loading Label, Warning Label |
| Safety Label(Quck Coupler)(Jp) | 36 | Label, Pin, Plug |
| Safety Label(Canopy)(Ex) | 37-38 | Pinus N Label, Caution Tag Assy, Caution N Tag Assy, Finger Label, Finger N Label, Sand Us Label, Sandus N Label, Label |
| Safety Label(Crane)(Jp) | 39 | - |
| Accessory | 40 | Collar Z Label, Manual Z Case, Manual N Bag, 35X70X6 Z Collar, Manual Bag |
| Suction Pipe & Exhaust Pipe | 41 | Exhaust Pipe Assy, Band, Air Cleaner Hose C, Air Cleaner Assy, Body, Cover Assy, Element, Unloader Valve |
| Accelerator | 42 | Accelerator Lever, Grip W, Accelerator Cable, Bracket, Cable Joint |
| Engine Mount | 43 | Mount Lf Assy, Eng Lf S Mount Assy, Eng Mount Re, Eng N Mount Rf, Eng Mount Rr, Stopper, Anti Vibrat Rubber |
| Radiator & Mount | 44 | -Way Cock Assy, Radiator Assy, Cap Assy, Hose, Pipe Fuel, Tank Assy, Band, Sub Tank Bracket |
| Fuel Tank | 45 | Fuel Tank Assy, Fuel N Tank Assy, Fuel Gauge, Fuel R Gauge, Float, Gasket, Fuel Cap, Cap |
| Fuel Line | 46 | Hose Assy, Fuel Hose, FO1470 Assy Hose, Fuel Pipe, Hose N, Band, Band N, Fuel Feed Pump Assy |
| Duct | 47 | Seal Rubber, Rubber N Seal, Reserver Seal, Duct Assy, Duct Assy S, Seal, Weight N Seal |
| Buttery | 48 | Battery Harnes, Battery, Battery Cord, Wire Harness, Battery Brackt, Battery N Brackt, Rubber Plate, Battery Clamp Rod |
| Wiring | 49 | Band, Band K, Slowblow Fuse, Housing, -2P Diode, Puller, Cover, B 5A Fuse |
| 139.(19A)Wiring(4P Canopy) | 50 | Band, Slowblow Fuse, Housing, -2P Diode, Puller, Cover, B 5A Fuse, Boom Lamp Harness |
| Wiring(Crane) | 51 | Fusible Link, Band, Corrugated Tube, Tube |
| Equipment | 52 | Grommet Z, Horn, Power Relay, Ca Type C R Relay, Ca Type C K Relay, Safety Relay, Glow Relay Assy, Timer |
| Equipment(Indicator Box) | 53-54 | Starter Switch Assy, Cord Assy, Cover, Indicator Z Box, Light Switch Assy, Packing, Gauge Assy, Hour Meter Assy |
| Equipment(Indicator Box)(Immobilizer Spec.) | 55-56 | Starter Switch Assy, Cord Assy, Cover, Timer Bracket, Light Switch Assy, Lamp D S Switch Assy, Monitor Z Panel Assy, Packing |
| Equipment(Crane)(1) | 57 | Bracket, Rubber, Level Gauge, Crane Panel Assy, Crane R Panel, Crane D S Panel Assy, Panel Z Sheet, Grommet |
| Equipment(Crane)(2) | 58 | Sensor, Bolt, Nut |
| Quick Coupler(Switch Box) | 59 | Switch W Box, Switch Ex N Box, Switch Ex D S Box, Switch W Label, Cover W Label, Switch N Box, Switch D S Box, Switch Assy |
| Work Lamp | 60 | Lamp Cover Assy, Bulb, Bolt |
| Canopy Lamp | 61 | Lamp, Bulb, Lamp Stay, Lamp S Stay |
| Heater | 62 | Band, Hose Clip, Connector, Heater Bracket, Heater S Bracket, Heater Joint, Heater Valve Assy |
| Sprocket & Roller | 63 | Sprocket, Track Roller Assy, Track N Roller Assy, Track Z Roller Assy, Roller Shaft, Oil 25X52X18 Seal, Ring, Shoe Plate |
| 144.(30A)Track Roller(S Spec.) | 64 | Oil 25X52X18 Seal, Ring, Ball, Plug |
| Idler & Adjust | 65-66 | Rubber Idler Assy, Idler Assy, Idler Shaft, Idler F Shaft, Idler Seal Cover, Seal, Idler Seal S Cover, Ring |
| Crawler | 67 | Track Shoe Assy, Crawler Link, Bush .15X43, Shoe Plate, Shoe S Plate, Track S Shoe Assy, Rubber Crawler, Master Track Assy |
| Control Equipment(Lock Lecer & Stand)(Right) | 68 | Bush, Boot Plate, Grip, Spring, Plate, Lock Lever, Lock S Lever, Lock Lever R F |
| Control Equipment(Lock Lever & Stand)(Left) | 69 | Grip, Hose Guide, Lever Stand, Bush, 25X15 Bush, Spring, Gas Spring, Boot Plate |
| Control Equipment(Travel Lever& Link Stand) | 70 | Boot, Track Lever, Bush, Drive Grip, Truck Bracket Assy, Grease PT1 Nipple, Grease C Nipple, Link Stand Assy |
| Control Equipment(Operation Lever) | 71 | Lever Boot P, Lever, Hinge, Spring, Knob Assy, Cap, Lever S, 5X18X35 Knob |
| Control Equipment(Blade Lever) | 72 | Blade Lever, Shaft Assy, Blade Grip, Blade Cable, Band |
| Control Equipment(Swing Pedal) | 73 | Swing Link, Bush, Pedal Link, Pedal Shaft, Grease PT1 Nipple, Grease B Nipple, Swing Pedal, Swing S Pedal |
| Control Equipment(Low-High Pedal) | 74 | Return Spring, Low-High Pedal, Low-High S Pedal, Pedal Bracket, Bush, Pedal Pad |
| Control Equipment(P.T.O.Pedal) | 75-76 | Lock Label, Spring, PTO Link Assy, PTO S Link Assy, Bush, Pedal, Pedal S, Plate |
| Control Equipment(P.T.O.Link) | 77 | Spool Rod, PTO Rod, PTO Link Assy, PTO S Link Assy, Bush, PTO Bracket, Elbow, Grease C Nipple |
| Control Valve Plate(To M37000) | 78 | Valve Plate, Multi Bracket, Bolt |
| 123.(42A)Control Valve Plate(From M37001) | 79 | Plate Assy, Valve, Bolt, Bracket Assy, Multi |
| Turning Frame(To M37000) | 80-81 | Counter Weight, Seal a, Seal, Counter Seal, Bracket Assy, Weight, Weight S, Seal C |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| FUSE, B 5A | 2 | p. 49 |
| FUSE, B 15A | 6 | p. 49 |
| FUSE, B 30A | 2 | p. 49 |
| SENSOR ASSY,PRES | 35M | p. 58 |
| BUSH | 22.15X43 | p. 67 |
| PIN | 4X22,LOCK | p. 67 |
| O-RING | 1BP14.0 | p. 135 |
Yanmar ViO20-3 Common Problems This Manual Covers
Yanmar Vio20-3 weak swing requires high revs to move and needs hydraulic pump seal replacement parts p. 133
Inspect the hydraulic pump exploded view on page 133 for the rotary set and relief valve components. Verify the exact O-ring required, such as the 1AG45.0 or 1AP9.0 O-ring. Cross-reference the pump assembly part number with your machine's serial number to ensure correct fitment before ordering.
Manual Section: Hyd.Oil Pump & Joint(To M36239)Unpredictable operation or loss of function after rain with blown electrical system components p. 49
Check the wiring harness assembly breakdown on page 49. Replace any blown slowblow fuses with the correct rating, such as the 15A fuse (qty 6) or the 30A fuse (qty 2). Match the replacement fuse part numbers exactly to restore stable electrical operation across the machine.
Manual Section: WiringLoud noise and vibration coming from the undercarriage during travel with worn track components p. 67
Review the crawler track shoe assembly breakdown on page 67. Replace the worn 22.15X43 bush and the 4X22 lock pin connecting the track links. Order the complete track link assembly using the exact part numbers listed to eliminate undercarriage vibration.
Manual Section: CrawlerCrane equipment pressure sensor failure triggering intermittent system faults during heavy lifting operations p. 58
Inspect the crane equipment harness and pressure sensor breakdown on page 58. Replace the faulty 35M pressure sensor assembly using the exact part number shown. Verify the harness connector part numbers in the diagram to ensure a watertight seal after installation.
Manual Section: Equipment(Crane)(2)Frequently Asked Questions
What are the replacement specifications for Hydraulic pump?
The manual provides part numbers for the hydraulic pump assembly. For models up to M36239, the part number is 172456-73100. For models from M36240, the part number is 172A23-73100. The catalog does not specify detailed replacement procedures or torque values.
What are the replacement specifications for Swing motor components?
The manual lists the swing motor assembly part number as 172456-73310. It also provides part numbers for various components such as the valve (172456-77100), seal set (172456-77110), and bolts (172456-77130). Detailed replacement specifications like torque or specific procedures are not provided.
How do you fix yanmar Vio20-3 weak swing requires high revs to move and needs hydraulic pump seal replacement parts?
Inspect the hydraulic pump exploded view on page 133 for the rotary set and relief valve components. Verify the exact O-ring required, such as the 1AG45.0 or 1AP9.0 O-ring. Cross-reference the pump assembly part number with your machine's serial number to ensure correct fitment before ordering.
How do you fix unpredictable operation or loss of function after rain with blown electrical system components?
Check the wiring harness assembly breakdown on page 49. Replace any blown slowblow fuses with the correct rating, such as the 15A fuse (qty 6) or the 30A fuse (qty 2). Match the replacement fuse part numbers exactly to restore stable electrical operation across the machine.
Is this Yanmar Vio20-3 Parts Catalog a digital download?
You get a 248-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Are there any print restrictions on this Yanmar Vio20-3?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Does this Yanmar Vio20-3 manual include wiring diagrams?
Included. The Yanmar Vio20-3 Parts Catalog provides a wiring diagram for the electrical system.
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