Description

Bobcat 527311001, 527411001 2006 Service Manual – OEM Factory Specs for Your Skid-Steer

You’ve got a Bobcat 527311001 or 527411001 skid-steer on the lift, and the last thing you need is a Chilton-ized generic procedure that tells you “torque to spec” without telling you the spec. I’ve seen guys put a hydraulic fitting back together with a grunt and a prayer, then wonder why the O-ring blows at 3,000 psi. This manual is the real deal. 612 pages of original OEM content, printed in 2006 by Bobcat Company – not a scanned copy from some third-party reseller. Every torque value, every bleed procedure, every safety warning comes straight from the factory. If you’re working on a loader with serial numbers in the ranges listed on page 1, you need this book on your bench.

Safety Instructions and Lift Arm Support Device

The first thing you’ll hit after the foreword is the SAFETY INSTRUCTIONS section – and it’s not the usual liability boilerplate. Bobcat spells out exactly how to handle the lift arms. The manual says: “Never work on loader with lift arms up unless lift arms are held by an approved lift arm support device.” They show you the correct and incorrect ways to block the loader. There’s a whole procedure for installing and removing the Lift Arm Support Device. Do yourself a favor – read that page before you stick your head under a raised cab. The manual also covers emergency exit procedures for the operator cab. If you’re training a new tech, start here.

Engine and Fuel System: What You’ll Find

This Service Manual covers the engine cooling system (cleaning, coolant level, replacement), the fuel system (specifications, filling, fuel filter, air removal), and the engine lubrication system (oil checking, oil chart, oil and filter replacement). None of this is guesswork. The fuel system section tells you exactly which diesel fuel grade to use and how to purge air after a filter change. I’ve watched guys crack injector lines for ten minutes because they didn’t have the right bleed procedure. That’s billable time wasted. The manual gives you the factory method – no shortcuts, no guessing. For the chaincase final drive transmission, you get checking and adding oil procedures – again, with correct fluid specs.

Hydraulic/Hydrostatic System: Schematics and Troubleshooting

Here’s where this manual earns its keep. The HYDRAULIC/HYDROSTATIC SCHEMATICS section includes actual OEM diagrams, not redrawn clip art. You’ll find a glossary of hydraulic/hydrostatic symbols, tighten procedures, and a troubleshooting chart. If the main relief valve is acting up or the BICS™ solenoid is locking you out, the manual walks you through checking, adjustment, removal, and installation. The lift cylinder and tilt cylinder sections include disassembly and assembly steps with part identification. For the Advanced Control System (ACS) valve body, there’s a full breakdown – spool removal, solenoid disassembly, port relief valve replacement. Every O-ring size and torque value is listed. You can’t afford to guess on a hydraulic system that runs at 3,000+ psi.

Serial Number Locations and Fitment

Page 1 of the manual shows the serial number ranges: S/N 527311001 & Above and S/N 527411001 & Above. Before you buy, confirm your loader’s serial number. The manual also gives the engine serial number location. This is critical – different engine families have different service intervals and filter part numbers. The Loader Identification section helps you decode the model year and options. Don’t assume your 2005 machine is the same; check the serial number against the ranges in this manual.

OEM vs Aftermarket: Why Factory Documentation Matters

I’ve used aftermarket manuals that told me to “tighten the hydraulic tube nut securely.” That’s useless. This manual tells you the exact torque in ft-lb for every fitting. It gives you the correct sequence for tightening the wheel nuts – a must for tire maintenance. The aftermarket junk never includes the BICS™ valve lock valve removal steps or the emergency exit instructions. Bobcat’s own engineers wrote this. It’s the same document the dealer techs use. If you’re serious about keeping your loader running, you don’t compromise on source data. For related equipment, check out Bobcat S175 2008 Service Manual – OEM Factory Repair Specs or Bobcat S185 2008 Service Manual – 998 Pages of Factory Specs and Bobcat S70 2008 Service Manual – Factory Specs.

FAQ

Does this manual cover the Bobcat S205 or other models?

No. This Service Manual is specifically for loader serial numbers 527311001 and 527411001 and above, as printed on page 1. Other models have different hydraulic systems and engine configurations. Always verify your serial number before ordering.

What torque values are included?

The manual lists OEM torque specs for hydraulic fittings, wheel nuts, engine components, and BICS™ valve fasteners. The Tighten Procedures section under HYDRAULIC SYSTEM INFORMATION gives the exact values. No generic ranges – factory numbers.

Can I use this manual for the chaincase transmission?

Yes. The FINAL DRIVE TRANSMISSION (CHAINCASE) section includes checking, adding, and removing oil. The chaincase is a manual transmission system (see Manual Transmission for general principles) but this manual gives the specific Bobcat lubricant grade and capacity. Also see Manual Transmission for background on similar gearboxes.

Is the hydraulic schematic readable?

Yes. The HYDRAULIC/HYDROSTATIC SCHEMATICS are full-page OEM diagrams with component labels and flow arrows. The glossary of symbols helps interpret the lines. This is not a low-resolution scan – it’s a direct print from the factory PDF.

If you’re working on a Bobcat skid-steer from this serial number range, stop relying on forum advice and aftermarket reprints. Get the document that Bobcat technicians use. Access the Factory Manual and have the correct procedure for every bolt, every line, every safety lock on your loader.