Description

Bobcat 310, 313 1982 Service Manual

If you are wrenching on an old Bobcat 310 or 313 and relying on memory or a generic aftermarket PDF, stop. I have had to redo too many jobs because someone guessed a torque spec or skipped a step. This is the original 1982 dealer service manual—188 pages of factory procedure, not a reprint. You get the same documentation the Bobcat techs used when these machines were new. No interpretation, no shortcuts, no missing pages. The manual covers preventive maintenance starting on page 1, then dives into the hydraulic, drive, main frame, and electrical systems chapter by chapter. The two separate engine sections for the 310 and 313 are on pages 6 and 7. If you need spec data for a rebuild or a fluid capacity check, turn to the Specifications chapter on page 8. This is not a condensed guide; it is the full factory manual.

Preventive Maintenance and Safety First

The very first pages of this manual hammer home safety. Page 3 is a full-page warning: never service the loader without proper instructions, never go under raised lift arms without an approved support device, and always use genuine Bobcat parts. That warning is there because people have died. The manual expects you to have read and understood the Operation & Maintenance Manual before touching tools. For a DIY owner, this might feel heavy, but it keeps you from making a mistake that costs a hospital visit. The preventive maintenance section lists daily checks—fluid levels, belt tension, tire pressure—in imperial units. You won’t find metric conversions or guesswork. Every interval is printed in black and white.

Hydraulic System: Pressure and Flow Specs

Hydraulic problems on a skid-steer can stall a job for hours. This manual dedicates an entire chapter to the hydraulic system. It shows the exact sequence for bleeding the system, the correct hose routing, and the pressure test points. The torque values for fittings are given in foot-pounds, and the manual tells you which wrench sizes you need. There is a troubleshooting table that lists symptoms—slow lift arms, erratic steering—and the corresponding check steps. If you have ever chased a leak that turned out to be a loose coupling because you used a generic spec, you will appreciate having the factory numbers here. The manual also warns about hydraulic fluid under pressure penetrating skin; that is not a scare tactic.

Electrical System: Wiring Diagrams You Can Trust

Chasing electrical gremlins without a proper diagram is a waste of time. The Electrical section covers the complete wiring schematic, including the charging circuit, starter, and safety interlocks. The manual labels each wire gauge and color code. For a 1982 machine, you might be dealing with degraded insulation or previous repairs; having the original layout lets you trace continuity without guessing. The manual also details the alternator output and battery specifications. Because this is an OEM document, the diagram matches the actual harness routing. Aftermarket manuals often simplify or omit things—this one does not. If you are rewiring or replacing a component, the chapter numbers and page references are consistent throughout the book.

Engine 310 and Engine 313: Separate Sections

These two models use different engines, and the manual treats them individually. The ENGINE 310 section covers the specific model number, compression pressures, valve clearance specs, and overhaul procedures. The ENGINE 313 section does the same for that variant. Each section includes the firing order, injection pump timing, and torque sequence for the cylinder head. Page references are given for cross-checking with the Specifications chapter. This separation avoids confusion. If you are working on a 313, you do not need to flip through 310 data—each section is self-contained. The manual also includes the original part numbers for gaskets and seals, so you can order the correct parts without cross-referencing.

Specifications: Torque Values and Fluid Capacities

The Specifications chapter is where you will live during a rebuild. It lists every critical torque value in foot-pounds: wheel lug nuts, hydraulic fitting connections, engine mounting bolts, and drive chain adjustment specs. Fluid capacities are given in quarts and gallons—for engine oil, hydraulic reservoir, and drive system. The manual even provides the cold and hot checks for the hydraulic oil. Page 8 is the quick-reference. I have seen techs lose an hour because they had to Google a spec; with this manual, you put eyes on the number, torque it, and move on. The final section is an alphabetical index, so you can find any topic fast. If you need the charge pressure for the hydrostatic system, the index points you right to it.

Related Manuals You Might Need

If you are maintaining a fleet of Bobcats, consider the Bobcat 310 313 Skid Steer Loader Service Manual as your baseline. For newer machines, the Bobcat S175 2008 Service Manual – OEM Factory Repair Specs covers the S175 with 2000+ pages of detail. The Bobcat S185 2008 Service Manual – 998 Pages of Factory Specs is another thick reference for later models. For general powertrain knowledge, the Manual Transmission section of a different manual might help, but always match the machine. You can also compare Manual Transmission designs, but stay focused on your Bobcat.

Does this manual cover the fuel injection system?

Yes. The engine sections include injection pump timing and injector specifications.

What if I need the torque spec for the hydraulic pump mounting bolts?

Check the Specifications chapter on page 8. It lists all critical torque values, including the pump mounting bolts, in foot-pounds. The manual also gives the sequence for tightening them to avoid warping the flange. If you are swapping the pump, that sequence matters. I have seen a mis-torqued pump leak within a week. Use the factory number.

This is the only manual you should trust for a 1982 Bobcat 310 or 313. Every diagram, spec, and procedure was printed by Melroe Company under Ingersoll-Rand. Access the Factory Manual and keep a copy on your tablet or print the pages you need. Your time, your safety, and your machine depend on having the right data. Get it from the source.