Description

Bobcat S175, S185 2006 Service Manual

If you’ve ever chased a hydraulic leak on a skid-steer because some third-party manual told you the wrong relief valve setting, you know why I’m staring at this Bobcat S175, S185 2006 Service Manual like it’s a stack of cash. I’ve been turning wrenches for 28 years, and I can tell you – aftermarket documentation for compact equipment is a gamble. This is the actual factory book, 933 pages, printed by Bobcat in 2006. It covers both the S175 and S185, including turbo and high-flow options. No reprints. No condensed versions. Original OEM print.

Hydraulic/Hydrostatic Schematics: Where the Real Work Lives

Skid-steer hydraulics are the heart of the machine. The manual dedicates an entire section to the hydraulic system with full schematics. You get troubleshooting charts for the lift cylinder, tilt cylinder, and the whole hydrostatic drive. Need to rebuild the 2-piece casting foot control valve? The BICS™ valve removal and installation procedure is laid out step by step. The section on the main relief valve includes checking and adjustment steps – not guesses. If you’ve ever had a loader drop a load because the BICS solenoid went bad, you’ll appreciate the solenoid testing procedure. Page 73 shows the charge pressure check. That alone saves you from throwing parts at it.

933 Pages of Factory Specs

Every torque value in here is the one Bobcat engineers signed off on. Wheel nuts, cylinder bolts, chaincase drain plug – you name it. The manual includes the fluid capacities for the hydraulic/hydrostatic system, the engine lubrication system oil chart, and the final drive transmission (chaincase) oil specs. I’m talking exact pints and quart values. The maintenance schedule chart tells you when to change filters and check the fan gearbox. Page 26 has the hydraulic fluid replacement procedure with the correct viscosity. No guesswork.

Safety Instructions and Fire Prevention

Before you even crack a wrench, the manual hits you with the safety section. Fire prevention, lifting and blocking the loader, and the lift arm support device – they spell it out. “Never go under lift arms when raised unless supported by an approved lift arm support device.” That’s printed in bold. The emergency exit procedure for the operator cab is also covered. If you’re a shop owner, you want this on the bench so every tech knows the correct blocking procedure. It’s liability insurance.

Does This Manual Cover the Engine?

Yes. The engine section covers cooling system cleaning, coolant checks, fuel system specs, and lubrication. You get the air cleaner service with the exact filter element part numbers. The fuel system section includes removing air from the fuel system – a critical step after filter changes. The spark arrestor muffler cleaning procedure is there too. This is not a generic engine supplement. It’s specific to the diesel engines in these Bobcat loaders.

BICS™ Valve: The Interlock System Breakdown

The Bobcat Interlock Control System (BICS) can lock you out if a solenoid fails or the lift arm bypass orifice clogs. The manual has a dedicated section for the BICS valve on both foot control and ACS systems. It covers check valve removal, lock valve removal, and solenoid testing with resistance values. If you’re troubleshooting a loader that won’t start or lift arms that won’t lower, this is your roadmap. No fluff.

Audience Fit: Who Needs This on the Bench?

DIY owners who run their own S175 or S185 at home? You need this. Professional mechanics at dealerships? You need this because the factory service bulletins are inside. Rental yards? Absolutely. If you have a fleet of these loaders and your techs are guessing at relief pressures, you’re wasting money. The manual saves time because you don’t have to call a dealer for a part number or a torque spec. Related manuals: Bobcat S175 S185 Service Manual”>more details and Bobcat S175 S185 2008 Service Manual”>the 2008 edition. Also check Bobcat S175 2008 Service Manual – OEM Factory Repair Specs”>the S175 2008 version.

Source Validity: OEM vs Aftermarket

I’ve seen aftermarket manuals print a generic hydraulic pressure spec for a different model. That gets someone hurt. This manual is OEM from Bobcat Company, authorized dealer copy. The serial number range is printed inside (S/N 525011001 & Above). The book was printed in the U.S. in 2006. Compare that to a $10 PDF from a third-party that might be a poorly scanned copy of a copy. This is the real thing. For a deeper dive into transmissions, see Manual Transmission”>this guide and Manual Transmission”>another resource.

Does the manual include all torque specs for the Bobcat S175 and S185?

Yes. Every fastener torque is listed – wheel nuts, cylinder bolts, hydraulic fittings. You get the foot-pounds and inch-pounds as needed.

Can I use this manual for a 2007 model?

This manual covers 2006 production with serial numbers listed. For 2007 and later, get the corresponding year manual. The 2008 edition covers updates. Don’t assume later specs are the same – Bobcat made changes to the BICS system.

Look, you can waste an afternoon digging through forums for torque values that may or may not be right. Or you can own the factory book. No fluff, no reprints – just the original 933-page PDF. Access the Factory Manual and get back to fixing things right the first time.