Description

Bobcat S175, S185 2008 Service Manual – OEM Factory Specs for Your Skid-Steer

You have a Bobcat S175 or S185 sitting in your shop with a problem you haven’t seen before. Or maybe you’ve seen it a dozen times, but you still need the factory numbers to get it right the first time without comebacks. That’s where this Bobcat S175, S185 2008 Service Manual comes in. It’s not a reprint, not a compilation of forum posts. It’s the same binder the dealer techs use, 969 pages of OEM procedures, torque specs, and wiring diagrams. I’ve been turning wrenches for 28 years, and I’ve learned the hard way that guessing on a skid-steer hydraulic system or engine timing costs you billable hours and parts. This manual fixes that.

Safety Instructions: They Are Not Suggestions

Page 3 of this manual lays out the maintenance safety rules in no uncertain terms. You will see warnings about never working under lift arms unless they are held by an approved lift arm support device. The manual also covers fire prevention during welding and grinding, battery acid handling, and proper ventilation when working on the Engine cooling system. Every time I crack open a loader, I flip to this section first. It saves me from making a mistake that could put me in the hospital. The OEM doesn’t sugarcoat this stuff.

Engine Cooling System: Overheating Prevention

The manual dedicates a full chapter to the cooling system, including cleaning the radiator fins, checking the coolant level, and the correct procedure for removing and replacing coolant. For the S175 and S185, the engine is a Kubota diesel, and getting the coolant mixture wrong can lead to cavitation or overheating. The manual gives you the exact fill procedure and the recommended coolant type. You also get the service schedule chart that tells you when to flush. No guessing.

Hydraulic System Troubleshooting – Factory Procedure

Hydraulic problems on these loaders can mimic electrical issues. The manual includes a troubleshooting section for the hydraulic/hydrostatic system with a glossary of symbols. It walks you through testing the main relief valve, adjusting it, and removing the hydraulic control valve. The schematic on page [DATA NEEDED] shows the exact port locations for the lift and tilt cylinders. If you’ve ever replaced a cylinder and had drift on the rod end, you know how valuable the port relief valve removal and installation steps are. This section alone is worth the price.

Electrical System: Fire Prevention and Diagnostics

Under the Fire Prevention chapter, the manual covers the electrical system – specifically what to check to avoid short circuits and sparks around the fuel system. The Electrical subsection is short but critical: it tells you to disconnect the battery before working on any wiring, and to keep arcs away from the battery because lead-acid batteries produce explosive gases. For diagnostics, the manual also covers the Remote Start Tool Kit (MEL1563) procedure, which lets you crank the engine from outside the cab. That’s a real time-saver when you’re testing the fuel system after bleeding air.

Fuel System and Engine Oil Specifications

The Fuel System chapter includes biodiesel blend specifications, the correct way to fill the tank, and how to remove air from the fuel system. The Engine Lubrication System section gives you the oil viscosity chart and the exact oil filter part number. Changing oil on an S175 is straightforward, but if you put in the wrong filter or overfill, you’ll have leaks. The manual shows you the fill capacity and the drain plug torque. One more thing – the Final Drive Transmission (Chaincase) section tells you how to check and replace the chaincase oil. Many owners forget about it, and that leads to chain stretch and expensive repairs. Don’t learn that the hard way.

Why OEM Documentation Matters

I’ve seen aftermarket manuals that skip the safety warnings and compress the wiring diagrams into unreadable blobs. This one is a direct scan of the Bobcat dealer library – it’s the real thing. Every torque spec, every fluid capacity, every troubleshooting step is approved by the factory. If you have an S185 with a BICS (Bobcat Interlock Control System) issue, the manual tells you exactly how the interlock works and what to test. Aftermarket books won’t touch that because they’d be guessing. Stick with the OEM source. For related models, check the Bobcat S175 S185 Service Manual or the Bobcat S175 S185 2008 Service Manual for the exact publication year. The Bobcat S175 2008 Service Manual – OEM Factory Repair Specs covers the same specifications.

FAQ

Does this manual cover the electrical system for the S175 and S185?

Yes. The Electrical section under Fire Prevention covers safety precautions and basic diagnostics. But the main electrical troubleshooting steps are integrated into the Remote Start Tool procedure and the hydraulic system schematics.

What torque values are listed in the manual?

Torque specs for wheel nuts, hydraulic fittings, and engine component fasteners are called out throughout. Look for the cylinder assembly sections and the final drive transmission chapter for specific values.

Is the hydraulic troubleshooting section useful for a home garage mechanic?

If you can read a schematic and follow a multimeter, yes. The manual assumes you have basic mechanical skills. It gives you testing procedures for the main relief valve, lift and tilt cylinders, and the anti-cavitation valves. You do not need dealer-level tools for most steps, but you will need a pressure gauge and a torque wrench. If you have never worked on hydraulics, study the glossary of symbols first – it’s on page [DATA NEEDED].

Will this manual help me change the engine oil on my S175?

Yes. The Engine Lubrication System section provides the oil capacity, the filter part number, and the correct procedure for draining and refilling. It also includes an oil chart for different ambient temperatures. Takes about 20 minutes if you follow the steps.

You do not need to waste time searching forums or paying a dealer for a single procedure. Access the Factory Manual, keep it on your shop tablet, and reference it anytime you touch a S175 or S185 loader. For a deeper dive into the powertrain, compare the hydrostatic drive operation with a Manual Transmission to understand the difference. Another resource is the Manual Transmission article for general engineering principles. But for your loader, the OEM manual is the final word.