Description

Bobcat 337, 341 2007 Service Manual – Factory OEM Specifications

I’ve been an ASE Master Technician for 28 years. I’ve torqued more head bolts than you’ve had hot dinners. And I can tell you right now: if you’re working on a Bobcat 337, 341 2007 Service Manual excavator without the OEM factory manual, you’re wasting time and risking damage. That’s why this 2007 Bobcat 337 and 341 service manual belongs on your bench. It’s a direct copy of the dealer manual – 901 pages of procedures that Bobcat wrote for their own service techs. Aftermarket reprints? Forget them. They skip steps, use wrong specs, and leave you guessing. I’ve seen too many comebacks caused by somebody using a third-party manual that had the port relief valve pressures off by 50 psi. That kind of mistake trashes a hydraulic pump. Don’t learn that lesson the hard way.

901 Pages – What You Really Get

This manual is 901 pages thick. That’s not marketing. That’s the actual content you get. From the serial number locations on page 1 – where you verify your machine’s S/N range – to the hydraulic schematics and assembly steps, every page serves a purpose. The table of contents alone lists dozens of sections: safety instructions, fire prevention, lifting procedures, cooling system, fuel system, engine lubrication, hydraulic system with troubleshooting charts, cylinder rebuilding, valve body disassembly, pump testing, torque limiter adjustment, travel motor oil checks, spark arrestor muffler service, and more. You need the oil filter replacement for an early model? It’s there. Later model? Also there. This manual separates the procedures by serial number break points so you don’t apply the wrong spec to your machine. That’s the kind of detail that saves you a rebuild.

Safety Instructions: Fire Prevention and Lifting

Page 3 starts the safety section. I know every tech thinks they know safety, but this manual includes specific warnings about welding and grinding painted parts – toxic dust and gas. It tells you to vent exhaust outside when running the engine for service. It explains the 3-point lift procedure for lifting the excavator, and tailgate adjustments broken down by serial number groups (below/above S/N 233311549). These aren’t generic cautions; they’re written for this exact machine. If you’re blocking the excavator for undercarriage work, you need the factory procedure. Skip it and you risk a 7,000-pound machine coming down on you. Not worth it.

Hydraulic System: Boom, Arm, Bucket Cylinders

The hydraulic system section is where this manual really proves its value. It covers testing, removal and installation, parts identification, disassembly and assembly for every cylinder – boom, arm, boom swing, bucket, blade, and clamp. Then it goes into the main relief valve, port relief valves with adjustment procedures, crossport relief valve, pressure reducing valve, and the full hydraulic control valve assembly. Each valve section – swing, boom offset, blade, bucket, arm, boom, auxiliary, and right/left travel – has its own disassembly and assembly instructions. The hydraulic pump section includes a work sheet, test fitting installation, torque limiter adjustment, and full pump control disassembly. For the horn circuit, reference Bobcat 337 341 2007 Service Manual – Section: Horn. If you’ve ever tried to diagnose a weak boom or slow travel without a schematic, you know the frustration. This manual gives you the hydraulic/hydrostatic schematic and troubleshooting chart on the same pages.

Engine Lubrication: Early vs Later Model Differences

The engine section is split by early and later models because Bobcat changed the oil checking procedure over the production run. Checking Engine Oil (Early Models) and Checking Engine Oil (Later Models) are separate entries. Same for replacing oil and filter. If you use the wrong procedure, you might overfill or underfill the crankcase. The manual also covers the cooling system, fuel system (including removing water from the fuel filter and bleeding air), and the heater air filter. All specifications are in Imperial units – quarts, inches, ft-lbs – as printed by Bobcat. No metric conversions needed. The full Bobcat 337 341 2007 Service Manual is available now.

Questions About the Bobcat 337, 341 Service Manual

What serial numbers does this manual cover?

S/N 233311001 & Above and S/N 233211001 & Above (D Series). Check page 1.

Does this manual include the engine service section?

Yes. Engine serial number location, lubrication system, cooling system, fuel system. 901 pages of engine data.

Is this manual better than aftermarket versions?

Aftermarket manuals are copies of copies. This is a direct scan of the official dealer copy. Specs are verified. Torque values are factory. I’ve seen aftermarket manuals that had the wrong torque for the main relief valve – that’ll cost you a pump. Stick with OEM.

Can I use this for a Bobcat 331?

No. This manual is specifically written for the Bobcat 337 and 341 excavators with serial numbers listed. The hydraulic system, engine, and all components differ from other models. Using this manual on a Bobcat 331 or any other model will give you incorrect torque values, wrong fluid capacities, and misguided diagnostic steps. That can lead to component failure and safety hazards. I’ve seen a tech use a 341 manual on a 337 when the serial numbers didn’t match – he ended up with a blown hydraulic seal because the port relief valve specs were off. Don’t be that guy. Buy the right manual for your machine.

I’ve been using factory manuals for decades, and this Bobcat 337, 341 service manual is as good as it gets. It’s the same book the dealer techs use. Don’t let a lack of proper documentation turn a routine service into a diagnostic nightmare. You can access the factory manual here at AutoRepairManuals. And if you need other references, check out Manual Transmission and Manual Transmission for related training. Also consider the Bobcat S175 2008 Service Manual – OEM Factory Repair Specs if you have that machine.