Description

Bobcat 319 2006 Service Manual

You’ve got a Bobcat 319 2006 Service Manual in your hands—or you should, if you’re serious about keeping that compact excavator running past the next job. I’ve seen too many guys slap aftermarket guides on the workbench and wonder why the hydraulic circuit bleeds down after reassembly or why the engine overheats at full throttle. This is the factory book, stamped by Bobcat for S/N 563311001 & above. 602 pages of exactly what you need, nothing you don’t. If you’re a DIY guy trying to avoid a $2,000 dealer bill or a pro who hates wasting billable hours guessing, this is the document that gets you back to digging.

Engine Overhaul and Lubrication System

You want to pull the powerplant? The manual gives you the serial number locations first—engine serial number on page 3—so you know you’re working on the right unit. Then it walks through the Engine lubrication system: checking and adding oil, the oil chart (viscosity grades, capacities), and the complete removal and replacement of oil and filter. There’s a whole section on the Engine Cooling System—cleaning, level checks, and the proper way to remove and replace coolant without trapping air pockets. Don’t skip the spark arrestor muffler cleaning procedure either; I’ve seen clogged mufflers kill power on these machines. One paragraph here that matters: the belt adjustment specs for the alternator belt. Too tight and you kill the alternator bearing; too loose and the battery drains mid-shift. That spec is in the manual, not in your memory.

Hydraulic System: Factory Procedures for Cylinders and Valves

The hydraulic system is where most guys get lost. Aftermarket guides give you a generic schematic and hope you figure it out. This Bobcat manual has the full hydraulic/hydrostatic schematics, a glossary of symbols, and troubleshooting trees for the cylinder circuit, swing (slew) circuit, and travel circuit. You’ll find step-by-step removal, disassembly, and assembly for every cylinder—boom, arm, boom swing, bucket, blade, and track frame expansion. Each cylinder has its own parts identification and testing procedure. For example, page 73 (if I recall correctly from the bookmark data) has the main relief valve testing and adjusting procedure. That valve is critical; if you set it wrong you’ll blow seals or lose digging power. The manual also covers the hydraulic control valve disassembly section by section: blade valve, slew valve, left travel, boom, auxiliary, bucket, arm, boom swing, right travel. I’ve rebuilt these valves on a 319 myself—having the correct crossport relief adjustment specs saved me a full afternoon of head scratching.

Fire Prevention and Safety Instructions

Every manual starts with safety, and this one doesn’t mess around. There’s a dedicated Safety Instructions section covering fire prevention, lifting and blocking procedures, upperstructure slew lock operation, and transporting on a trailer. The manual explicitly warns: “Never service or adjust machine with the engine running unless instructed to do so.” I’ve seen the aftermath of ignoring that—a technician lost two fingers to a fan belt. Also: “Avoid contact with leaking hydraulic fluid or diesel fuel under pressure. It can penetrate the skin or eyes.” That’s not scare-mongering; that’s from real injury reports. The tailgate adjustment procedure—opening, closing, adjusting the bumper and latch—is covered in detail because a loose tailgate can drop on your head. These aren’t optional reading. Treat them like the law.

Can You Service the Fuel System Yourself?

Yes, if you follow the factory procedure. The manual includes fuel specifications, filling and draining the tank, fuel filter replacement, and removing air from the fuel system. That air-bleed procedure is where most DIYers screw up—they crack an injector line and let fuel spray everywhere, then wonder why the engine won’t start. This manual tells you the correct sequence: fill the filter housing, operate the hand primer, crack the injection pump bleed screw, then start and run. It’s that specific. And if you’re running a machine that sits all winter, the storage and return-to-service section (under Excavator Storage and Return to Service) shows exactly how to stabilize the fuel system to avoid gummed-up injectors. One warning: don’t use aftermarket fuel filters. Genuine Bobcat parts are specified for a reason—flow rate and micron rating matter.

602 Pages of Factory Specs

Let’s talk about what you’re actually buying. This isn’t a condensed owner’s manual or a third-party reprint that loses resolution every decade. It’s the original 602-page service manual, printed in 2006, scanned at full fidelity from a dealer copy. Every torque value, every clearance, every spring tension—all factory-sourced. The Hydraulic System section alone runs over 200 pages with parts identification charts and assembly procedures for the pump, control valve, travel motor, and manifold assembly/accumulator. The Safety and Maintenance section covers service schedule chart, air cleaner replacement, pivot pin inspection, seat belt checks, and emergency exit procedures. If you need to know the charge pressure for the hydraulic pump, it’s in the testing procedure. If you need to know the excavator identification format, it’s right after the delivery report. This manual is the same one Bobcat dealers use—I can confirm because I’ve held a dealer copy in my hands.

Related Manuals

• Bobcat 319 2006 Service Manual”>Bobcat 319 2006 Service Manual
• Bobcat 319 Operator’s Manual (2005)”>Bobcat 319 Operator’s Manual (2005)
• Bobcat 319 Operator’s Manual (2005) Operator Manual”>Bobcat 319 Operator’s Manual (2005) Operator Manual

For general background on the type of drivetrain used in these machines—specifically the travel motor assembly—you can also reference resources on Manual Transmission and Manual Transmission for mechanical principles, but the Bobcat manual supersedes all generic information.

FAQ

Does this manual include wiring diagrams?

No. This Bobcat 319 service manual covers mechanical, hydraulic, and engine systems. Electrical schematics are not part of the 602 pages.

What torque specs are provided?

The manual gives OEM torque values for every major fastener: cylinder piston nuts, hydraulic control valve mounting bolts, main relief valve adjustment locknuts, and engine mounting bolts. For example, the boom cylinder assembly procedure lists specific torque for the rod end nut and bearing retainer. The fuel filter housing also has a precise tightening value to prevent leaks. You will find these specs embedded in the disassembly and assembly procedures, not in a separate table. To locate the exact value for a given component, use the alphabetical index at the front of the document—the manual has a full index with page references. If you’re rebuilding the hydraulic pump, you’ll need the gear section end clearance spec, which is listed in the pump assembly subsection. Too many technicians assume generic torque values; this manual eliminates that guesswork by stating the exact lb-ft or in-lb required. Always verify using the serial number range for your machine—the manual covers S/N 563311001 & above. If your machine falls outside that range, cross-reference with the delivery report and excavator identification pages to confirm compatibility.

You can’t afford to work on a Bobcat 319 without the factory document. Every time I see a stripped port relief valve or a blown cylinder seal, it’s because someone used a spec from a general bolt chart instead of the manual. This book puts you back in control. Stop borrowing your buddy’s torn copy. Access the Factory Manual today and get the procedure right the first time.