Need the exact factory part numbers for your crawler back-hoe? This 103-page Yanmar SV08-1B parts catalog PDF (OEM #0CK50-M00230EN) breaks down every single component for both the SV08-1B and 1A variants. Inside, you get highly detailed exploded views covering the entire hydraulic control valve assembly, swivel joint, and travel motor. Match your physical hardware directly to the diagrams to find complete parts lists with precise OEM numbers, making visual component identification fast and accurate. Verify your undercarriage setup by checking whether your machine takes the 53.5mm Y-specification track roller or the 62mm S-specification roller before placing an order, and confirm your main harness requires a 40A fuse. Stop wasting days waiting for the wrong hardware to arrive. This bookmarked file opens instantly on your tablet, letting you look up numbers right beside the excavator.
What's Inside This Yanmar SV08-1B Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Reference Materials | 2-6 | Parts Catalog, Preface, Vehicle Painted Color, Picturesque Index, Contents |
| Label(Exterior)(Us)(To Mbf000) | 10 | Greasing Lavel, ROPS Label, Seat Belt Label, Boom Label, Hook Label, Variable Us Label, Lift Us Label |
| 84.(1A)Label(Exterior)(Us)(From Mbf001) | 11 | Greasing Lavel, ROPS Label, Seat Belt Label, Boom Label, Hook Label, Variable Us Label, Lift Us Label |
| Label(Exterior)(Kr)(To Mbf000) | 12 | Greasing Lavel, Boom Label, Hook Label, Lift E Label, Variable Us Label |
| 85.(2A)Label(Exterior)(Kr)(From Mbf001) | 13 | Greasing Lavel, Boom Label, Hook Label, Lift E Label, Variable Us Label |
| Label(Bonnet Inside)(Us) | 14 | Hydraulic Oil Label, Resevoir Label, Radiator Label, Battery Label, Muffler Label, Fuel Label, Air Cleaner Label, Fuel Oil Caut Label |
| Label(Bonnet Inside)(Kr) | 15 | Hydraulic Oil Label, Resevoir Label, Radiator Label, Battery Label, Muffler Label, Fuel Label, Air Cleaner Label |
| Label(Around the Control)(Us) | 16 | Support Label, W/ S Operation Label, Swing Lock Us Label, Caution Tag Assy, Lock Label, Turning Lock Label, Slope Label, Transport Label |
| Label(Around the Control)(Kr) | 17 | Support Label, W/ S Operation Label, Swing Lock Us Label, Caution Tag Assy, Lock Label, Turning Lock Label, Slope Label, Transport Label |
| Muffler | 19 | Gasket, Spring Seat, Bolt, Nut |
| Air Cleaner | 20 | Air Cleaner B Hose, Unloader Valve, Element, Cover Assy, Ring |
| Accelerator Lever | 21 | Arm Assy, Accelerator Grip, Collar, Spring |
| Accelerator Cable | 22 | - |
| Engine Mount | 23 | Shock 290K Absober, Washer, Bolt, Nut |
| Radiator | 24 | Shock Absorber, Fan Guard, Pressure Cap, Shroud Assy, Rubber Hose, Clip, Seal, Radiator Seal |
| Fuel Tank | 25 | Fuel Strainer, Strainer Gasket, Tank Cap Assy, Vent Valve, Hose, Float, Rubber Plate, Drain Block |
| Fuel Piping | 26 | Fuel Hose, Fuel Pipe, Band, Fuel Filter, Hose Clip |
| Battery | 27 | Battery Cord Assy, Clamp, Washer |
| Battery Clamp | 28 | Rod, Clamp, Washer, Bolt |
| Wiring | 29 | Work Lamp Harness, Band, Hose Clip, Fuse 40A, B 10A Fuse, 2W, R120 Resistor, Engine Earth Cord |
| Equipment | 30 | Fuse Bracket, Starter Switch Assy, Hour Meter, Insulator, Lamp, 12V .4W Bulb, Stay, Buzzer |
| Sprocket | 31 | Bolt |
| Idler | 32 | Shaft Idler, QLN30X62X13 Seal, Ring |
| Track Roller(Y Spec.) | 33 | Track Z Roller, Roller Shaft, TW254716 Seal, Ring |
| 82.(22A)Track Roller(S Spec.) | 34 | Oil 25X52X18 Seal, Ring, Ball, Bolt |
| Crawler Adjust | 35 | Bolt, Nut |
| Crawler | 36 | - |
| Operation Lever(Right)(Us) | 37 | Lever Boot P, Lever, Nc- Joint, Knob Assy, Rod, Joint, Elbow |
| Operation Lever(Right)(Kr) | 38 | Lever Boot P, Lever, Nc- Joint, Base Assy, Arm, Spring, Knob Assy, Rod |
| Operation Lever(Left)(Us) | 39 | Lever Boot P, Knob Assy, Lever, Link L, Nc- Joint, Rod, Joint, Elbow |
| Operation Lever(Left)(Kr) | 40 | Lever Boot P, Knob Assy, Lever, Link L, Nc- Joint, Rod, Elbow |
| Blade Lever | 41 | Blade Link, Blade Grip, Spool Rod a |
| Travel Lever | 42 | Track Lever, Bush, Drive Grip, Grease PT1 Nipple, Spool Rod a |
| Variable Leg Lever | 43 | Variable Lever, Bush, Link, Lever Knob, Grease C Nipple |
| Link | 44 | 14X10 Bush, Band, Ring, Grease MT6X1 Nipple |
| Swing Pedal | 45 | Swing Shaft Assy, Spring, Spool Rod |
| P.T.O. Pedal | 46 | PTO Shaft Assy, PTO Pedal, Spring, Spool Rod, PTO Lock Assy |
| Link Stand(Us) | 47 | Grommet, Support Assy, Support Assy N, Bush, Seal, Assist Bar, Assist S Bar, Rubber R Plate |
| Link Stand(Kr) | 48 | Grommet, Support Assy, Support Assy N, Bush, Seal, Assist Bar, Assist S Bar, Swivel Seal |
| Stopper | 49 | Lever Knob, Lock Lever, Lock Link, Lock Pipe, Spring |
| Travel Frame | 50 | Crawler Frame, Stopper Bolt Assy, Stopper Nut Assy, Plate |
| Turning Frame | 51 | Frame Cover, PTO Cover, Radiator Seal, Bush 35X45, Tree Clip |
| Turning Bearing | 52 | Seal Set, Pin, Bolt |
| Cover(Travel Frame) | 53 | Motor Cover, Tree Clip, Bolt |
| Turning Lock | 54 | - |
| Step | 55 | Insulator, Step Seal, Washer, Bolt |
| Seat | 56 | Seat Bracket, Seat N Bracket, Seat Cushion, Bolt |
| Seat Belt | 57 | Seat Belt Assy, Washer, Bolt, Nut |
| ROPS | 58 | ROPS Base Assy, ROPS Roof Assy, ROPS Label, Seat Belt Label |
| Bonnet | 59-60 | Lever Knob, Rubber, Trim, Sponge, Insulator, Support Label, Battery Label, Neutral Label |
| Hydraulic Pump Mount | 61 | Coupling, Bolt, Washer, Nut |
| Hydraulic Pump | 62 | - |
| Boom Cylinder | 63 | Boom Cylinder Assy, Head -, 25X25 Bush, Boom Tube, Boom Rod Assy, RGU50 Gasket Assy, - Collar, Ring |
| Arm Cylinder | 64 | RGU50 Gasket Assy, Arm Tube, Arm Rod Assy, Piston 18X28, Head B W/ Bush, 25X25 Bush, Head 50B Seal Set |
| Bucket Cylinder | 65 | Cylinder Assy, Bucket Tube, Head, 25X25 Bush, Bucket Rod Assy, Piston, Gasket, Head Seal Set |
| Swing Cylinder | 66 | RGU55 Gasket Assy, Head Cmp, 30X30 Bush, Piston, Swing Tube Assy, Bush, Swing Rod Assy |
| Blade Cylinder | 67 | Blade Cylinder Assy, RGU50 Gasket Assy, Piston 18X28, Head B W/ Bush, 25X25 Bush, Blade Tube, Head 50B Seal Set, Blade Rod Assy |
| Variable Leg Widen / Shorten Cylinder | 68 | Cylinder Assy, Head 50B Seal Set, RGU50 Gasket Assy, Variable Tube Assy, Piston 18X28, Head B W/ Bush, 25X25 Bush |
| Travel Motor | 69-70 | Travel Motor Cmp, Snap Ring, Cover, Gear, Seal Ring, Thrust Plate, Seal Assy, Ring |
| Turning Motor(N Spec.)(To M1B535) | 71 | O-Ring, Bolt |
| 83.(57A)Turning Motor(E Spec.)(From M1B536) | 72 | Spring, Plate, Valve Plate, Drive, Geroller, Retaining Ring, Shaft Face Seal, Inner Face Seal |
| Swivel Joint | 73 | Ring, Duct Cover, O-Ring, Washer |
| Control Valve(1/7) | 74 | - |
| Control Valve(2/7) | 75 | Section Assy, Bac Up Ring, Valve Spring, Valve Stay, Spring Cap, Check Valve |
| Control Valve(3/7) | 76 | Swing Section Assy, Bac Up Ring, Valve Spring, Valve Stay, Spring Cap, Swing Spool Assy, Check Valve, Boom Section Assy |
| Control Valve(4/7) | 77 | Bucket Section Assy, Bac Up Ring, Valve Spring, Valve Stay, Spring Cap, Check Valve, Bucket Spool Assy, Travel Section Assy |
| Control Valve(5/7) | 78 | Blade Section Assy, Bac Up Ring, Valve Spring, Valve Stay, Spring Cap, Blade Spool Assy, Check Valve, PTO Section Assy |
| Control Valve(6/7) | 79 | Arm Section Assy, Bac Up Ring, Valve Spring, Valve Stay, Spring Cap, Arm Spool Assy, Check Valve, Section Assy |
| Control Valve(7/7) | 80 | Travel Section Assy, Bac Up Ring, Valve Stay, Spring Cap, Travel Spool Assy, Section Assy |
| Hyd. Oil Tank | 81 | Return Strainer, Filter Element, Suction Filter, Reserver Cap, Gauge Assy, Resevoir Label |
| Tank - Pump - Control Valve | 82 | Joint Assy, Adapter, Hose, O-Ring |
| Control Valve - Turning Motor & Swing Cylinder | 83 | Elbow, Adapter, PF1/2X1 Connector, Rgi- Joint, Band, Hose, Hose Cover |
| Control Valve - Swivel Joint | 84 | Elbow, Adapter, Rgi- Joint, W Band |
| Return | 85 | Check Valve Assy, - Nipple, 8X1 Connector, Elbow Nipple, 90RGI- Joint, Elbow S, Hose, Hose Cover |
| Travel Frame | 86 | Connector, G1/ -G1 Joint, 3X1 Connector, Joint, Rgi- Joint |
| Control Valve - Boom | 87 | Elbow, Adapter, Rgi- Joint, Band, Hose, Rubber Plate, Hose Support, 9X18 Collar |
| P.T.O.(Frame End) | 88 | Elbow, Joint, PF1/4PF3 Connector, Connector Assy, - Nipple, PTO Bracket, Hose |
| P.T.O.(Boom End) | 89 | Joint, Adapter, Elbow, 90RGI- Joint, Swivel Joint Elbow, Boom Pipe Retainer, PTO Tube, Spacer Plate |
| Greasing | 90 | Hose, Grease Joint, PT1 Connector, Grease PT1 Nipple |
| Boom Bracket | 91 | Ring, Grease C Nipple, Pin |
| Boom | 92 | Boom Assy, Grease C Nipple, Pin, Shim |
| Arm | 93 | Arm Assy, Boom Label, Grease C Nipple, Pin |
| Bucket Arm & Link | 94 | Bucket Link, Bucket Arm, Grease PT1 Nipple, Pin |
| Bucket | 95 | Bucket Assy, Side Cutter, Teeth Assy, Grease PT1 Nipple |
| Blade | 96 | Assy Brade, Blade Assy, Grease PT1 Nipple, Grease B Nipple |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Y specification track roller diameter | 53.5mm | p. 33 |
| S specification track roller diameter | 62mm | p. 33 |
| FUSE rating | 40A | p. 29 |
| FUSE, B rating | 10A | p. 29 |
| RESISTOR power | 2W | p. 29 |
| BULB rating | 12V 3.4W | p. 30 |
| Track Roller Y specification diameter | 53.5mm | p. 33 |
| Track Roller S specification diameter | 62mm | p. 33 |
Yanmar SV08-1B Common Problems This Manual Covers
Yanmar SV08-1B track derails constantly and the undercarriage wears unevenly on the lower side during operation p. 33
Inspect the lower rollers and measure the outer diameter. If the roller measures 53.5mm, check page 33 for the Y specification track roller assembly. Match the part numbers for the bearing, shaft, and seal kits to replace the worn components.
Manual Section: Track Roller(Y Spec.)Machine has weak starting or no-start behavior with a completely dead electrical system p. 29
Locate the main electrical harness and verify the 40A fuse is intact. Review the wiring components on page 29 to identify the exact replacement part numbers for the 40A fuse, 10A fuse, and the 2W resistor to order replacement components.
Manual Section: WiringWork lamps fail to illuminate and instrument panel indicators remain completely dark during night operation p. 30
Remove the defective bulbs from the work lamp and meter assembly. Consult page 30 to find the specific part numbers for the 12V 27W work lamp bulbs and the smaller 12V 3.4W or 12V 3W indicator bulbs required for replacement.
Manual Section: EquipmentUndercarriage makes loud clunking noises and the lower track tension feels excessively loose p. 34
Measure the lower track roller diameter to confirm your machine specification. If your roller measures 62mm, locate the exploded parts view on page 34 to find the correct lower roller assembly, shaft, and seal ring part numbers for the S specification undercarriage.
Manual Section: 82.(22A)Track Roller(S Spec.)Frequently Asked Questions
What are the replacement specifications for battery?
The replacement battery for the YANMAR SV08-1B is listed as Parts No. 172446-16100. The manual does not provide further specifications such as voltage or amperage.
What are the replacement specifications for coolant/reservoir-related cooling parts?
For coolant/reservoir-related cooling parts, the manual lists a "RADIATOR ASSY" (Parts No. 172A20-13420) and a "CAP, PRESSURE" (Parts No. 172446-13450) for the radiator. For the hydraulic oil tank, a "TANK ASSY, RESERVOIR" (Parts No. 772A20-75100) and "CAP, RESERVER" (Parts No. 172446-75250) are specified. Detailed specifications like capacity or pressure ratings are not provided beyond the part numbers.
How do you fix yanmar SV08-1B track derails constantly and the undercarriage wears unevenly on the lower side during operation?
Inspect the lower rollers and measure the outer diameter. If the roller measures 53.5mm, check page 33 for the Y specification track roller assembly. Match the part numbers for the bearing, shaft, and seal kits to replace the worn components.
How do you fix machine has weak starting or no-start behavior with a completely dead electrical system?
Locate the main electrical harness and verify the 40A fuse is intact. Review the wiring components on page 29 to identify the exact replacement part numbers for the 40A fuse, 10A fuse, and the 2W resistor to order replacement components.
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