Part of the Yanmar Operator Manuals.
Need the factory operation guide for your Yanmar crawler carrier? This 264-page C12R-A, C30R-2A, C50R-3B Operation Manual (OEM #LGBBFC-00000) lays out everything from initial inspection and daily operation procedures to full system maintenance across all three variants. Inside: hydraulic schematics showing complete circuit routing for the control valve and dump cylinder systems, wiring diagrams for each variant, and a thorough troubleshooting section. You also get a full maintenance chapter with temperature-based fueling, oiling, and greasing schedules, plus the standard tightening torque table for every bolt and nut in the machine. Set your C12R-A control valve relief pressure between 2233 and 2318 PSI (15.4 to 16.0 MPa); the C30R-2A dump cylinder holds at 4640 PSI (32.0 MPa). Your crawler is grounded and the job isn't. Download the PDF, jump to any section with built-in bookmarks, and get the right spec on the first try.
Complete the set for your C12R-A, C30R-2A, C50R-3B
- Parts Catalog: Yanmar C12R-A Parts Catalog (Crawler Carrier)
What's Inside This Yanmar C12R-A, C30R-2A, C50R-3B Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 9 | Machine Operation, Inspection Procedures, Servicing Procedures, Safety Precautions, Product Warranty, Machine Specifications |
| Safety Information | 10 | Signal Words, Product Warnings, User Directions, Operation Safety, Machine Maintenance, Unauthorized Modifications |
| Product Overview and Regulation | 11 | Intended Uses, Operation License |
| Ordering Replacement Parts and Service Call | 12 | Location of Machine Serial Number Plate, Location of Engine Serial Number Plate, Location of the Epa Identification Plate, Ordering Replacement Parts and Service Calls |
| Safety | 13-46 | Basic Precautions, Operating Precautions, Precautions for Servicing, Safety Messages (Warning Labels) |
| Description of operator’s Area for C12R-A | 49-66 | Identification of Important Parts |
| Description of operator’s Area for C30R-2A | 67-77 | Monitor, Switches, Control Levers and Pedals, Engine Hood, Fuse Box and Fusible Link, Operator's Seat, Dump Deck Support Stopper |
| Description of operator’s Area for C50R-3B | 78-96 | Monitor, Switches, Engine Hood, Side Cover, Battery Cover, Cabin, Wagon Stopper, Fuel Cap |
| Operating Instructions for C12R-A | 97-123 | Engine, Cooling Water, Engine Oil, Fuel, Hydraulic Oil, Fan Belt, Drive Belt, Rubber Crawler |
| Operating Instructions for C30R-2A | 124-145 | Engine, Machine, Cooling Water, Engine Oil, Fuel Tank, Hydraulic Oil System, Fan Belt, Crawler |
| Operating Instructions for C50R-3B | 146-169 | Engine, Machine, Hydraulic System, Undercarriage, Electrical Equipment, Wagon, Fuel Tank, Fan Belt |
| Care in Cold Weather and Long-Term Storage | 170-175 | Transportation |
| Troubleshooting | 176-180 | Electrical Equipment, Engine, Machine Body, Hydraulic System, Wagon, Undercarriage, Crawler Type, Equipment and Adjustments |
| Maintenance | 181-234 | Precautions for Servicing, Basic Servicing Practices, Fueling, Oiling and Greasing Based on Temperature Range, Standard Tightening Torque for Bolts and Nuts, Maintenance Table |
| Specifications | 235-250 | Options, Hydraulic and Wiring Diagrams |
| Notes | 251-264 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| C12R-A | ||
| Control valve relief pressure | 2233 to 2318 PSI (15.4 to 16.0 MPa) | p. 244 |
| Engine Oil Capacity (with filter) | 1.8 L + 0.4 L | p. 185 |
| Fuel Tank Capacity | 14.5 L | p. 185 |
| Hydraulic Oil System Capacity (in tank) | 14.0 L | p. 185 |
| Cooling System Water Capacity (radiator) | 1.6 L | p. 185 |
| Rubber Crawler Tension Slack | 20-30 mm | p. 102 |
| Fan Belt Tension Slack | 10-15 mm | p. 101 |
| Drive Belt Tension Slack | 10 mm | p. 102 |
| C30R-2A | ||
| Dump cylinder set pressure | 4640 PSI (32.0 MPa) | p. 245 |
| All Models | ||
| Maximum Gradient | 30° | p. 237 |
| Coarse Thread M10x1.5 Torque | 44.1 - 58.8 N•m | p. 186 |
| Fine Thread M10x1.25 Torque | 47.5 - 52.5 N•m | p. 186 |
