Description

Bobcat S175, S185 2006 Service Manual – What You Actually Get on the Bench

If you’ve ever cracked open an aftermarket manual for a skid-steer loader and found generic torque values or wiring diagrams that don’t match the machine in front of you, you know the pain. You waste billable time double-checking specs. You split a fitting because the tightening sequence was a guess. I’ve been turning wrenches for 28 years, and I’ll tell you straight: the Bobcat S175, S185 2006 Service Manual from AutoRepairManuals is the real deal. It’s the same 726-page binder Bobcat dealers used in 2006, scanned cover to cover. No reprints, no copied third-party nonsense. You get the original OEM file – the one Ingalls Rand printed for dealer use only.

This manual covers S175 and S185 models (including High Flow and Turbo variants) from serial numbers 517625001 & Above, 518115001 & Above, 519028001 & Above, and 519215001 & Above. If your machine falls inside those ranges, you’re holding the exact document you need. The Service Manual includes the full BICS™ (Bobcat Interlock Control System) diagnostics, which is something you don’t mess with unless you have the factory procedure. I’ve seen techs blow solenoids because they guessed the test sequence – this manual gives you the steps straight from Bobcat.

Why OEM Factory Documentation Beats Aftermarket Copies

Aftermarket manuals love to slap “covers all models” on the cover. Then you open to the hydraulic schematics and it’s a generic ISO drawing with no reference to your machine’s actual valve stack. Ask me how I know. The Bobcat S175, S185 2006 Service Manual is an original OEM print. Every tightening procedure, every pressure setting, every disassembly note comes from Bobcat’s engineering team. Page 1 states it’s a “Dealer Copy – Not for Resale” – that’s your guarantee you’re getting the factory-issued document, not a chopped PDF. When you’re rebuilding a Kubota V2203-EB or V2003T-EB (Turbo) engine, you need the factory coolant capacity and oil viscosity chart, not a footnote. That chart is in the manual under “Engine Lubrication System” with a full oil chart. If you’re working on a customer’s loader and the lift arms drop because you used the wrong relief valve setting, that’s a liability you can’t afford. This document removes the guesswork.

Engine Coverage: Kubota V2203-EB and V2003T-EB (Turbo)

The manual dedicates full sections to both naturally aspirated and turbocharged Kubota diesel engines. You get the fuel system procedure – including removing air from the system after a filter change – not a vague “bleed until it starts” line. The Engine section includes cooling system cleaning, coolant replacement, and the specific intervals from the service schedule chart. If you’ve ever had a turbo V2003T-EB overheat because the previous guy skipped the coolant flush, you’ll appreciate the step-by-step. The manual also covers the spark arrestor muffler cleaning (required in some states) – it’s in the “Safety and Maintenance” chapter, right after tire maintenance. Every torque value is imperial: wheel nuts, fan gearbox, chaincase drain plug – all factory spec.

Hydraulic/Hydrostatic System – The Core of the Machine

Skid-steer loaders live and die by their hydraulic system. This manual gives you the full schematics – “HYDRAULIC/HYDROSTATIC SCHEMATICS” – plus a troubleshooting chart that’s actually useful. Need to check the main relief valve? The procedure is right there with removal, installation, and adjustment steps. The section on the “Hydraulic Control Valve (Foot Control)” covers the BICS™ valve in detail: removal, installation, solenoid testing, check valve replacement. If you’re dealing with a Bobcat S175 that won’t start because the BICS solenoid failed, the manual tells you exactly how to test the solenoid (page numbers in the PDF are clear). Don’t waste money replacing the whole valve block – test it first. The manual also covers the “Hydraulic Control Valve (Advanced Control System) (ACS)” for newer machines, including actuator removal and identification chart. For a shop that sees both old and newer Bobcats, this is gold.

Safety Procedures You Can’t Skip

I’ve pulled more than one tech aside who thought “safety section” was optional. The manual starts with “SAFETY INSTRUCTIONS” including fire prevention, lifting and blocking the loader, and the lift arm support device. It shows you both correct and incorrect ways to support the lift arms (pages with diagrams). If you’re working alone in a six-bay shop and you drop the cab on your hand because you didn’t follow the cab raising procedure, you’re losing a week of work. The manual includes emergency exit instructions for the operator cab – not the kind of thing you think about until you need it. “Remote Start” procedure? It’s in there, with a note that you must block the wheels and engage the parking brake. This isn’t a novel; it’s a working document designed to keep your fingers attached.

3 Reasons to Choose This OEM Manual Over a Third-Party Reprint

1. Serial number accuracy. This manual matches the exact VIN ranges listed. If your S185 is S/N 518115001 & Above, you get the correct hydraulic schematic and wiring for your machine. Aftermarket manuals often cut corners and combine years.
2. BICS™ system coverage. Bobcat’s interlock system is proprietary. The manual dedicates multiple sections to the BICS valve, solenoid testing, and lock valve removal. A generic manual won’t tell you which pin to probe on the solenoid connector.
3. OEM torque specs. Every bolt head in the manual has a torque value from Bobcat. Wheel nuts, chaincase drain plug, hydraulic tube fittings – all imperial, all verified. You won’t find “tighten securely” anywhere.

What’s Inside: Chapters You’ll Actually Use

The table of contents covers every system: Safety and Maintenance, Hydraulic System (11 sub-sections including cylinder disassembly), Kubota engine cooling and lubrication, fuel system, final drive transmission (chaincase), fan gearbox, Bob-Tach inspection, tire maintenance, and even the spark arrestor muffler. The hydraulic section includes “Cylinder (Lift)” and “Cylinder (Tilt)” with identification, disassembly, and assembly steps. If you’ve ever fought a tilt cylinder that won’t seal after rebuild, the manual shows the rod end pivot pin bushing and seal replacement procedure. The “Main Relief Valve” adjustment is critical – too high and you burst a hose, too low and you lose breakout force. The manual gives you the adjustment steps without speculation.

Don’t overlook the “Delivery Report” chapter – it’s the checklist a dealer uses when the machine ships. If you’re buying a used S175 or S185, that checklist tells you what should have been inspected. The serial number location page shows both loader and engine serial numbers (Kubota engine SN is on the block). Write those down before you start ordering parts.

FAQ – Four Questions I Hear in the Shop

Does this manual cover the D-slash engine or just the Kubota?

The manual covers Kubota V2203-EB and V2003T-EB (Turbo) engines only. If your machine has a different power plant, this won’t match.

Can I print the entire 726 pages?

You can print any page – it’s a PDF, no DRM. I recommend printing only the sections you need (like the hydraulic schematics or BICS test procedure) to keep your binder manageable. The file is high resolution, so text and diagrams are sharp on paper.

Is this the same manual Bobcat dealers used in 2006?

Yes. The PDF header says “Dealer Copy – Not for Resale” and includes the Ingersoll Rand copyright. The manual was never sold to the public; it was only distributed to authorized dealers. This is a scan of that original print, not a re-creation.

What if my S185 serial number is slightly below the range listed?

Bobcat often made running changes. If your serial number is below 518115001, the hydraulic control valve configuration might differ. You should cross-reference the BICS valve identification chart in the manual. Some early models used a different solenoid. The manual still covers the majority of production; if you’re unsure, call the shop with your VIN.

When you’re in the middle of a job and the loader won’t lift because the BICS valve is acting up, you don’t have time to hunt forums. You need the factory procedure. That’s what you get here. Bobcat S175 S185 Service Manual is the base document for these machines – if you’re looking for a newer revision, check Bobcat S175 S185 2008 Service Manual or the Bobcat S175 2008 Service Manual – OEM Factory Repair Specs. For background on how hydraulic systems work in general, refer to Manual Transmission (the transmission section in a truck manual isn’t the same, but the principles of fluid power apply). Also see Manual Transmission for gearbox theory.

If you’re serious about keeping your Bobcat S175 or S185 running at spec – and not wasting time guessing – access the factory manual. You’ll get 726 pages of OEM data, from the Kubota oil change interval to the BICS solenoid test procedure. Stop chasing aftermarket PDFs that leave out the critical details. Access the Factory Manual and put it on your tablet. Your machines – and your customers – will thank you.