Description

Bobcat S205 2006 Service Manual – Factory Specs for the S205 Turbo

You’re three hours into a hydraulic leak on an S205, and the aftermarket PDF you bought says “torque fittings to spec” without giving you a number. That’s not a manual. That’s a waste of time. I’ve seen guys snap off a BICS™ valve fitting because they guessed at 20 ft-lbs when the factory calls for 14. This 2006 Bobcat S205 2006 Service Manual from AutoRepairManuals doesn’t make you guess. It gives you the OEM procedure, the torque sequence, the clearance limits, and the exact part numbers. That’s why I keep a copy in my box at the shop.

This is the official dealer copy—same binder the Bobcat dealer uses. 847 pages of step-by-step repair procedures, safety instructions, and factory schematics. No third-party re-interpretation. If you work on a Bobcat S205 Turbo or High Flow model (serial numbers 528411001 and above), this is the only source you should trust for engine, hydraulic, hydrostatic, and electrical systems. I’ve pulled the exact section names from the table of contents so you know what you’re getting.

What’s Inside the 847 Pages?

The manual opens with MAINTENANCE SAFETY – a full page of warnings that most guys skip until they get burned. Then it jumps into SERIAL NUMBER LOCATION (Loader and Engine – page 1 tells you where to find both). The SAFETY AND MAINTENANCE chapter covers lifting and blocking the loader, installing the lift arm support device, operator cab raise/lower procedure, remote start, service schedule, air cleaner service, engine cooling system, fuel system, engine lubrication system, hydraulic/hydrostatic system, final drive chaincase, fan gearbox, Bob-Tach, tire maintenance, and spark arrestor muffler cleaning. Each section has a procedure with required tool lists and warnings. For example, the FUEL SYSTEM subsection includes fuel specifications, filling the tank, fuel filter replacement, and the air bleed procedure. That’s the kind of detail that keeps you from burning up a fuel pump on a reprime.

Engine Lubrication and Cooling System Coverage

The ENGINE LUBRICATION SYSTEM section gives you the oil chart, checking procedure, and the correct oil and filter replacement steps. The ENGINE COOLING SYSTEM tells you how to clean the cooling system, check coolant level, and replace the coolant. These are not generic instructions – they’re specific to the S205 turbocharged diesel. If you’re working on the engine, you need the factory cooling system purge procedure. This manual has it. Without it, you’re chasing air pockets and overheating on the job site.

Hydraulic System: Schematics and Troubleshooting

The entire HYDRAULIC SYSTEM section runs for dozens of pages. It starts with HYDRAULIC/HYDROSTATIC SCHEMATICS – actual line drawings, not vague block diagrams. Then there’s a Troubleshooting Chart that lists symptoms, causes, and corrections. The cylinder sections for lift, tilt, and power Bob-Tach each include checking, removal and installation, identification, disassembly, and assembly. The MAIN RELIEF VALVE has checking, adjustment, and removal/installation procedures. For the hydraulic control valve (both foot control and Advanced Control System), the manual covers every subcomponent: load check valves, anti-cavitation valves, port relief valves, spool removal, BICS™ valve solenoid disassembly, and more. You want to rebuild an S205 control valve without the factory ball detent torque? Good luck. This manual gives you the numbers.

Safety Instructions You Cannot Skip

Page 3 of the manual – the MAINTENANCE SAFETY page – spells it out: “Never service the Bobcat Skid-Steer Loader without instructions.” It warns about hydraulic fluid injection, battery acid, exhaust fumes, and lift arm drops. The manual explicitly says: “Do not go under lift arms when raised unless supported by an approved lift arm support device. Replace if damaged.” That’s not a suggestion. That’s the difference between going home and a 911 call. Every time I hand this manual to a new tech, I make them read that page first. I’ve seen what happens when a lift arm drops. This manual keeps you alive if you follow it.

Who Needs This Manual?

If you own a Bobcat S205, work on them at a dealership, or run a rental fleet, you need this manual. The SERVICE SCHEDULE chart tells you when to change hydraulic fluid, filters, chaincase oil, and coolant. Without the schedule, you’re either changing too often (wasting money) or not often enough (blowing seals). The FINAL DRIVE TRANSMISSION (CHAINCASE) section tells you the correct oil level check and removal procedure – use the wrong weight oil and you toast the chains. For the home garage mechanic, this manual is overkill in the best way: it walks you through every bolt torque, every wiring harness connector, every bleed procedure. Beginners who skip the manual end up with half-assembled machines. I’ve had customers bring in S205s with cross-threaded hydraulic fittings because they “thought it felt tight enough.” A manual removes that guesswork.

Source Authenticity: OEM Versus Aftermarket

This is the original Bobcat Company publication from 2006 – printed in the U.S.A. by Ingersoll Rand. The OEM part number is 6902917. Aftermarket manuals copy the text but leave out critical notes. I’ve seen reprints that omit the “BICS™ Valve, Lift Load Check Valve Removal And Installation” torque spec because the scanner cut off the bottom of the page. That’s not a minor omission – that’s a leak waiting to happen. This PDF is a direct scan of the dealer copy. Every page, every warning, every schematic. If you need to check a torque value for the MAIN RELIEF VALVE adjustment, it’s there. If you need the hydraulic/hydrostatic system fluid capacity, it’s there. If you need the correct procedure to Remove Air From The Fuel System, it’s there. No guessing. No shortcuts. Just original OEM documentation.

I’ve linked the Bobcat S205 2006 Service Manual directly for you. For comparison, check out the Bobcat S205 2008 Service Manual – Section: Evaporator/Heater Unit if you need HVAC coverage for later models. The Bobcat S205 2008 Service Manual also covers ACS hydraulic valve variations. For daily operation specs, the Bobcat S205 2006 Operators Manual – Factory Specs for Skid-Steer gives you fluid capacities and adjustment data in a lighter format. And if you’re curious about how the Bobcat’s final drive transmission (chaincase) differs from a standard Manual Transmission in a truck, this manual explains the chain drive design. The Manual Transmission section in automotive manuals deals with gears and syncros – not the same as this skid-steer’s hydrostatic setup.

Does this manual cover the S205 Turbo High Flow model?

Yes. The cover says “S205 TURBO HIGH FLOW” and covers serial numbers 528411001 and above (528511001 for High Flow).

What torque values are listed for hydraulic control valve bolts?

The hydraulic control valve section includes multiple torque specs for port relief valves, anti-cavitation valves, and spool lock blocks. You’ll find them in the disassembly/assembly procedures. The manual does not list all torques in one table—you have to go to each sub-section. For example, the main relief valve adjustment torque is given in that specific procedure.

Does the wiring schematics section include the BICS™ interlock system?

Yes. The hydraulic/hydrostatic schematics include the BICS™ valve solenoid wiring. The manual covers disassembly of the BICS™ valve solenoid and the lift arm bypass orifice.

Can I rebuild the lift cylinder with this manual alone?

Yes. The cylinder (lift) section has removal and installation, identification, disassembly, assembly, and checking procedures. You will need the seal kit part numbers listed in the identification chart.

Access the Factory Manual now from AutoRepairManuals. Eight hundred forty-seven pages of factory procedures, OEM schematics, and torque specs that will save you from parts wastage and safety hazards. I’ve used this exact manual on three S205s in my own shop – it’s the only reference I trust for hydraulic relief valve adjustments and chaincase oil checks. Get it, print the safety page, and keep it in your toolbox. Your machine will last longer, and you won’t end up with a leak that costs you a Saturday.