Looking for the complete factory breakdown of your rubber crawler carrier excavator? This 60-page Yanmar c12r-a parts catalog pdf (OEM #0CS10-M45702EN) details every single component for the C12R-A and C12R-A (US) variants. Open the file to find crystal-clear exploded views of the engine mounts, transmission shafts, and hydraulic oil piping. You get complete factory parts lists with precise hardware identification for the entire wagon, chassis, and undercarriage assemblies. Order the exact replacement HST assembly using part number 758804-85101, and secure the correct 10A B-fuse (29420-100000) before wiring up the cab equipment. Wasted time at the parts counter kills your shop profitability. Grab this bookmarked document, pull up the diagram you need on your tablet, walk right up to the machine, and order the correct hardware on the first try.
What's Inside This Yanmar C12R-A Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Reference Materials | 2-6 | - |
| Label | 8-9 | C12R-A-Us Label Set, C12R-Us N Label Set, Accelerator Label, Brand Label, Angel Label, Hydraulic Oil Label, Radiator Label |
| Safety Label | 10 | Resevoir Label, Battery Label, Radiator Label, Caution Tag Assy, Caution N Tag Assy, Engine Cover Label, Muffler Label, Dump Us Label |
| Rearview Mirror | 11 | - |
| Silencer | 13 | Gasket, Silencer Assy, Washer, Bolt |
| Air Cleaner | 14 | Air Cleaner Mount, Air Cleaner S Mount, Air Cleaner Hose, Element, Cover Assy, Unloader Valve |
| Accelerator Lever | 15 | Accelerator Cable, Accelerator R Cable, Accelerator S Lever, 12X20 Bush, Accelerator Grip, Spring |
| Engine Mount | 16 | Shock Absorber, Mount Plate, Washer |
| Radiator & Mount | 17 | Radiator Mount, Radiator Seal, Seal Rubber, Shock Absorber, Fan S Guard, Pressure Cap, Shroud Assy, Rubber Hose |
| Fuel Tank & Fuel Pipe | 18 | Fuel Tank Assy, Fuel S Tank Assy, Tank Sump, Water Cock, Fuel Gauge Hose, Fuel Filter, Float, Tank Cap Assy |
| Battery & Cable | 19 | Battery, Battery R, Battery Cord, Rod |
| Electric Part(Wiring) | 20 | Wire Harness Assy a, Diode, Earth Wire, Band, Hose Clip, Harness B |
| Electric Part(Equipment) | 21 | Fuse Bracket, Hour Meter, Starter Switch Assy, Cord Assy, Cover, 4P Fuse Cmp, Fuser Body, B 10A Fuse |
| Pulley & Belt | 22-23 | Engine Pulley, Engine S Pulley, HST Pulley, HST S Pulley, Flywheel Cover, Flywheel S Cover, Tension Shaft, Tension S Shaft |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| HST ASSY (replacement part number) | 758804-85101 | p. 47 |
| BATTERY (replacement part number) | 172447-16100 | p. 19 |
| FUSE CMP,4P (replacement part number) | 172447-17110 | p. 21 |
| FUSE, B 10A (replacement part number) | 29420-100000 | p. 21 |
| WIRE HARNESS ASSY A (replacement part number) | 172655-16500 | p. 20 |
| HARNESS B (replacement part number) | 172652-16520 | p. 20 |
| HOSE (replacement part number) | 172652-78100 | p. 50 |
| SEAL, OIL TC203208 (replacement part number) | 24421-203208 | p. 26 |
| SEAL, 20358 (replacement part number) | 158802-85421 | p. 47 |
Yanmar C12R-A Common Problems This Manual Covers
Yanmar C12R-A travel power drops as the machine warms up or feels weak during operation p. 47
Review the HST parts diagram on page 47 to locate the exact hydrostatic drive unit. For US models, request HST assembly part 758804-85101. Check the diagram for associated oil seals, such as part 158805-85420, to ensure a complete rebuild before ordering.
Manual Section: HSTHydraulic functions are weak and leaking fluid from cracked or blown main piping lines p. 50
Examine the Hydraulic Parts Diagram on page 50 to match your leaking lines with the correct factory schematics. For US equipment, locate specific replacement hose part numbers like 172652-78100 or 172652-78120 depending on the exact routing and cylinder connection points.
Manual Section: Hyd.Oil PipingMachine starts inconsistently or has intermittent electrical faults from blown fuses or bad wiring p. 21
Consult the Electric Part(Equipment) list on page 21 to find exact replacement fuses for your panel. Identify the blown circuit and order the corresponding 40A fuse part 172447-17120 or 10A fuse part 29420-100000 for US models to restore reliable electrical operation.
Manual Section: Electric Part(Equipment)Lift cylinder leaks fluid constantly around the rod or loses pressure under heavy loads p. 46
Inspect the exploded cylinder views on page 46 to identify the correct rebuild components. For US models, order the complete seal set part 172638-72201 or head seal set part 172648-72300. Match the cylinder rod packing part 172638-72200 to your specific application.
Manual Section: Hyd.Oil CylinderFrequently Asked Questions
How do you fix yanmar C12R-A travel power drops as the machine warms up or feels weak during operation?
Review the HST exploded parts diagram on page 47 to locate the exact hydrostatic drive unit. For US models, request HST assembly part 758804-85101. Check the diagram for associated oil seals, such as part 158805-85420, to ensure a complete rebuild before ordering.
How do you fix hydraulic functions are weak and leaking fluid from cracked or blown main piping lines?
Examine the Hydraulic Parts Diagram on page 50 to match your leaking lines with the correct factory part listings. For US equipment, locate specific replacement hose part numbers like 172652-78100 or 172652-78120 depending on the exact routing and cylinder connection points.
How do you fix machine starts inconsistently or has intermittent electrical faults from blown fuses or bad wiring?
Consult the Electric Part(Equipment) list on page 21 to find exact replacement fuses for your panel. Identify the blown circuit and order the corresponding 40A fuse part 172447-17120 or 10A fuse part 29420-100000 for US models to restore reliable electrical operation.
How do you fix lift cylinder leaks fluid constantly around the rod or loses pressure under heavy loads?
Inspect the exploded cylinder parts views on page 46 to identify the correct rebuild components. For US models, order the complete seal set part 172638-72201 or head seal set part 172648-72300. Match the cylinder rod packing part 172638-72200 to your specific application.
What do I get after purchasing this Yanmar C12R-A Parts Catalog (Crawler Carrier)?
Immediate download of the complete 60-page searchable Parts Catalog. Access it on any device, from a laptop at your desk to a phone in the field.
Can I print specific sections of this Yanmar C12R-A Parts Catalog (Crawler Carrier)?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
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