Finding the correct replacement components for your 1992-1994 crawler backhoe is straightforward with this 250-page parts catalog PDF. You get highly detailed, exploded-view diagrams covering the complete chassis, boom, drivetrain, and 3TNC80L engine assemblies to guarantee accurate part identification. Open it up for full hydraulic parts breakdowns, cab assembly diagrams, undercarriage and travel-motor components, plus the wiring layout for the electrical system. Every assembly is paired with reference numbers you can cross-check against the parts list before you order. Stop guessing on aftermarket parts, look up the exact OEM number you need, and get your B27-2 back to work.
What's Inside This Yanmar B27-2, 3TNC80L-RB1 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Preface | 1 | Part Catalog History, Model Name, Machine No., Yanmar Genuine Parts |
| Specifications | 2 | Transport Length, Std. Bucket Capacity, Max. Digging Depth, Boom Swing Angle, Travel Speed, Machine Mass |
| Vehicle Painted Color | 3 | Previous Color, New Color, Operational Part, Painted Color List |
| Table of Painted Color | 4 | Previous Yellow, New Yellow, New Green, Deep Green, Dark Olive Gray, Charcoal Gray |
Yanmar B27-2, 3TNC80L-RB1 Common Problems This Manual Covers
Yanmar B27-2 right travel motor feels stuck under load and you need to find replacement parts
Inspect the Drivetrain Parts Diagram to locate the correct travel motor assembly. Match your serial number against the parts list to find the exact seal kit. Check the Specifications on page 2 to confirm your exact Machine Mass matches the listed travel drive components.
Manual Section: Drivetrain Parts DiagramTemperature warning light acts erratically and the damaged wiring harness requires new connector part numbers
Check the Wiring Diagram to trace the temperature sensor circuit. Identify the exact connector part numbers in the electrical index. Cross-reference the Engine Parts Diagram to locate the corresponding temperature sending unit and housing assembly.
Manual Section: Wiring DiagramHydraulic functions are slow and the main pump or leaking hoses need replacement part numbers
Review the Hydraulic Parts Diagram for the main pump exploded view. Locate the correct suction and high-pressure hose part numbers. Verify the required quantities in the parts list and ensure the components match your specific pump configuration before ordering replacements.
Manual Section: Hydraulic Parts DiagramStandard bucket or boom cylinder is leaking fluid and requires correct seal kit part identification
Examine the Boom & Attachment Parts Diagram to find the boom cylinder breakdown. Locate the specific seal kit part number. Verify the attachment compatibility and check page 2 to confirm the Std. Bucket Capacity matches your current configuration.
Manual Section: Boom & Attachment Parts DiagramFrequently Asked Questions
What are the replacement specifications for hydraulic hoses?
The manual lists various hydraulic hoses with their part numbers and sometimes dimensions. For example, "HOSE G206BC145" has part number 172168-78510, and "HOSE P208CC080S" has part number 172168-78920. These specifications are found in the hydraulic piping sections.
What are the replacement specifications for hydraulic pump?
The manual provides replacement specifications for hydraulic pumps by listing their part numbers. For instance, a "PUMP COMP.,3-THROW" is listed with part number 172168-73100, and a "PUMP ASSY,HYD OIL" with part number 172168-73110. A "PUMP ASSY,DUPLX.GEAR" is also listed with part number 172168-71280.
How do you fix right travel motor feels stuck under load and you need to find replacement parts?
Inspect the Drivetrain Parts Diagram to locate the correct travel motor assembly. Match your serial number against the parts list to find the exact seal kit. Check the Specifications on page 2 to confirm your exact Machine Mass matches the listed travel drive components.
How do you fix temperature warning light acts erratically and the damaged wiring harness requires new connector part numbers?
Check the Wiring Diagram to trace the temperature sensor circuit. Identify the exact connector part numbers in the electrical index. Cross-reference the Engine Parts Diagram to locate the corresponding temperature sending unit and housing assembly.
How quickly can I access this manual after buying?
This is a 250-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Are there any print restrictions on this manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Does this Parts Catalog cover the hydraulic system?
Yes. The manual includes a hydraulic system diagram covering the main circuits.
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