Hunting down a part number for your Yanmar ViO55 Crawler Backhoe? This 126-page parts catalog (OEM #000Y00S4220) maps every component from engine silencer to bucket pin, exploded views included, with factory part numbers for the complete ViO55. Figures run by system across engine, electrical, undercarriage, hydraulic cylinders, control valves, and cab, with wiring diagrams and hydraulic piping schematics traced from tank to travel motor. A painted color reference lists Munsell numbers for every Yanmar finish. The swivel joint O-Ring shows as 1A P-16.0; engine mount hardware calls for M8X20 bolts. Stop calling the dealer just to confirm a number. Bookmarked by system and searchable by keyword, it opens on any device, so you can walk to the parts counter with the right number in hand.
What's Inside This Yanmar ViO55, Vi055 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Preface & Model Information | 1 | First Edition, Yanmar Crawler Backhoe ViO55, Pub. No. 000Y00S4220, Model Name Table, Engine Model 4TNE88-Ebvca |
| Picturesque Index | 2-3 | Figure References |
| Painted Color List & Labels | 4-5 | Yanmar Deep Green, Yanmar New Permanent Yellow, Yanmar New Grayish Green, Yanmar Dark Olive Gray, Yanmar Black, Yanmar Warm Gray, Munsell Numbers, Color Codes |
| Engine Related Parts | 14-25 | Silencer & Air Cleaner, Accelerator, Engine Mount, Radiator & Mount, Fuel Tank & Fuel Pipe, Battery |
| Electrical System Parts | 26-31 | Electric Part (Wiring), Electric Part (Equipment), Work Lamp, Harnesses, Fuses, Relays, Switches |
| Undercarriage & Crawler Parts | 32-35 | Roller & Adjust, Crawler, Sprocket, Idler, Track Shoes, Rubber Crawler |
| Control Equipment (Levers & Pedals) | 36-49 | Lock Lever (R/L), Travel Lever, Blade Lever, Swing Pedal, Low-High Pedal, P.T.O. Pedal, Cables, Grips |
| Frame & Body Covers | 50-63 | Frame & Turning Bearing, Cover (Frame), Cover (Cabin), Step & Instrument Panel, Seat Mount, Bonnet, Canopy Mount, Gaskets |
| Hydraulic Pump & Swivel Joint | 64-65 | Hyd. Oil Pump & Joint, Swivel Joint, Cylinder Block Kit, Solenoids, Shafts, O-Rings |
| Hydraulic Cylinders | 66-75 | Boom Cylinder, Arm Cylinder, Bucket Cylinder, Swing Cylinder, Blade Cylinder, Seal Sets, Pistons, Rods |
| Travel & Turning Motors | 76-80 | Travel Motor, Turning Motor, Reduction Gear, Ball Bearings, O-Rings, Circlips |
| Control Valves | 83-94 | Control Valve (P Port), Control Valve (Travel & P.T.O.), Control Valve (Arm & Swing), Control Valve (Boom & Bucket), Control Valve (Turning & Blade), Remote Control Valve |
| Hydraulic Piping | 95-114 | Hyd. Oil Tank, Piping (Tank-P-Valve), Piping (Pump-V-Motor), Piping (Valve-S-Swing), Piping (Return), Piping (Travel), Piping (Boom), Piping (P.T.O.) |
| Greasing | 115-116 | Grease Joints, Fittings, Nipples |
| Boom, Arm, Bucket, Blade Linkage | 117-124 | Boom & Boom Bracket, Arm & Bucket Link, Bucket Pin, Blade, Pins, Bushes, Shims, Seals |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Bolt Size | M8X20 | p. 14 |
| Washer Size | 8 | p. 14 |
| Clamp Size | 70 | p. 14 |
| O-Ring Size | 1A P-16.0 | p. 20 |
| Hose Dimension | 7*225 | p. 20 |
| Fuse Rating | B30 | p. 28 |
| Bulb Voltage/Wattage | T6.5-13.5V-2W | p. 28 |
| Circlip Size | 35 | p. 32 |
| Spring Pin Size | 3.5X40 | p. 38 |
| Parallel Pin Size | 13X36 | p. 50 |
| Spacer Dimension | M20 1.5 | p. 50 |
Yanmar ViO55, Vi055 Common Problems This Manual Covers
Yanmar ViO55 hydraulic pump assembly part number unclear, need correct replacement for failed unit p. 64
Open the Hydraulic Pump & Swivel Joint exploded view starting on page 64. The parts diagram on page 65 breaks down the full pump assembly: cylinder block kit, solenoids, shafts, and O-rings. Cross-reference that list against your machine's serial number range on page 1 to confirm the correct variant before ordering.
Manual Section: Hydraulic Pump & Swivel JointDozer blade two-speed switch part number needed, handle assembly switch stopped responding p. 26
Trace the switch through the Electrical System Parts section starting on page 26, where switches, relays, harnesses, and fuses are itemized, blade handle components included. Then check Control Equipment (Levers & Pedals) on page 36 for the blade lever exploded view, which shows how the switch ties into the handle grip and cable routing.
Manual Section: Electrical System PartsWater separator filter part number unknown, fluid contamination alarm triggered on coolant side p. 14
Locate the water separator filter in the Engine Related Parts section beginning on page 14. The fuel tank and fuel pipe assembly diagram on page 19 shows related filtration components. For coolant hose part numbers that may be feeding the contamination, cross-reference the radiator and engine mount components listed across pages 14-25.
Manual Section: Engine Related PartsHydraulic cylinder seal set part numbers needed for boom, arm, or bucket cylinder rebuild p. 66
Jump to Hydraulic Cylinders on page 66. Each cylinder (boom, arm, bucket, swing, blade) carries its own exploded view with seal sets, pistons, and rods itemized separately. Pick the cylinder you're rebuilding, find its sub-section, and note the seal set part number. Verify against the parts index to confirm fitment for your serial range.
Manual Section: Hydraulic CylindersOverfill bottle fluid level sensor part number missing from order, level reading out of range p. 95
Browse the Hydraulic Piping section starting on page 95, which covers the hydraulic oil tank plus its piping and sensor components. A sensor mounted externally on the tank assembly appears in the tank sub-section of pages 95-114. For O-ring sizing on tank connections, the verified size at page 96 is 1A G-105.0.
Manual Section: Hydraulic PipingCorrect paint code needed for touch-up after body panel repair, color doesn't match factory finish p. 4
Match your panel against the Painted Color List & Labels on pages 4-5. Every factory color is listed with Munsell numbers and color codes: Yanmar Deep Green, New Permanent Yellow, New Grayish Green, Dark Olive Gray, Black, and Warm Gray. Note the Munsell number for your color, then use that code when ordering touch-up paint or specifying a mix.
Manual Section: Painted Color List & LabelsFrequently Asked Questions
What are the replacement specifications for Hydraulic Pump Assembly?
The Hydraulic Pump Assembly is part number 172461-73100, listed as "PUMP ASSY,HYD OIL", with one unit required per machine. You'll find it in Figure 27, titled "HYD.OIL PUMP & JOINT".
How do you fix yanmar ViO55 hydraulic pump assembly part number unclear, need correct replacement for failed unit?
Pull up the Hydraulic Pump & Swivel Joint exploded view on page 64; page 65 details the full assembly, including the cylinder block kit, solenoids, shafts, and O-rings. Match that parts list to your serial range from page 1 before you order the replacement.
How do you fix dozer blade two-speed switch part number needed, handle assembly switch stopped responding?
The two-speed switch lives in Electrical System Parts on page 26, listed alongside relays, harnesses, and fuses. To see how it mounts, the blade lever exploded view in Control Equipment (Levers & Pedals) on page 36 shows the switch against the handle grip and cable routing.
How do you fix water separator filter part number unknown, fluid contamination alarm triggered on coolant side?
The water separator filter sits in Engine Related Parts from page 14, with related filtration shown in the fuel tank and fuel pipe diagram on page 19. Suspect coolant crossover? Cross-check the radiator and engine mount parts across pages 14-25.
What format is this manual in?
A 126-page searchable PDF, ready the moment you check out. It runs on any device, so you can pull it up on your phone right at the machine. Nothing ships, nothing to wait on.
Is this Yanmar ViO55 Parts Catalog printable?
There are no print restrictions — the PDF is DRM-free, so print whatever sections you need to take out to the shop. Standard letter or A4 paper works fine.
Does this Yanmar ViO55 Parts Catalog cover the hydraulic system?
Included. A hydraulic system diagram lays out the main hydraulic circuit for the Yanmar ViO55.
Document Quality
This document is a scanned PDF, providing clear and crisp text that is easy to read on every page. An OCR layer is present, allowing you to search and copy text throughout the document. Diagrams and illustrations are detailed line drawings with readable labels, though some labels on the wiring diagram are small. The pages are clean, free of scan artifacts, stains, or skewed content. You will find several OCR output pages interspersed, which serve as filler but do not detract from the main content.
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