Description

Bobcat S70 2008 Service Manual

You are about to crack open a hydraulic fitting on your S70 skid-steer and you don’t have the factory torque spec for that O-ring face seal fitting. Guess too low and you get a leak that sprays fluid all over the engine bay. Guess too high and you strip the port in the manifold. That is exactly the kind of headache this Bobcat S70 2008 Service Manual eliminates. I have been turning wrenches for almost three decades, and I have seen more machines come in with stripped threads and blown seals from using aftermarket spec sheets than I care to count. This manual is the real deal – 420 pages of Bobcat-published procedures, not a third-party reprint.

Hydraulic System Troubleshooting and Valve Disassembly

Hydraulic problems on the S70 often trace back to the control valve stack. The manual walks you through the entire BICS™ valve removal, disassembly, and assembly – including the solenoid testing and identification chart. You get the exact steps for pulling the main relief valve, load check valves, and port relief/anti-cavitation valves. Every O-ring and seal has a part number listed. The troubleshooting chart on the hydraulic system information pages will save you from replacing parts that aren’t actually bad. Page 73 has the charge pressure test procedure. I have used that chart to nail a failing seal on the first go more times than I can count.

Engine Cooling System and Coolant Replacement Procedure

Overheating a diesel engine on a hot San Antonio job site costs you the whole afternoon. The manual covers cleaning the cooling system, checking coolant level, and the full removal and replacement of coolant. It tells you the exact type of coolant, the capacity, and the bleed procedure so you don’t trap air pockets. The engine serial number location is also listed so you can match the correct engine variant – critical when ordering a water pump or thermostat.

Lift Arm Support Device: Installing and Removing

Never trust hydraulics to hold the lift arms while you are underneath. The manual’s procedure on the lift arm support device is something every S70 owner should read. See Bobcat S70 2008 Service Manual – Section: Lift Arms for the full installation steps. It tells you exactly where to position the support, how to verify it’s locked, and how to safely remove it. That section alone can keep you alive. The manual also covers the BOB-TACH inspection and pivot pin maintenance – things that get skipped until something breaks.

Electrical System Safety and Fire Prevention

Fire prevention gets its own section in this manual, with specific warnings about electrical system work. The Electrical subsection under FIRE PREVENTION tells you what to disconnect before welding or grinding near wiring harnesses. It also covers battery hazards – lead-acid batteries produce explosive gases. The manual gives the correct order for battery disconnect and reconnect to avoid arcing. If you have ever seen a skid-steer wiring harness melt because someone grounded a welder to the frame, you will appreciate having this in print.

Does This Manual Cover the Remote Start Tool?

Yes. The manual includes two remote start tool kits: the MEL 1563 and the Service Tool Kit 6689779. It details the harness part numbers (MEL1565, MEL1566, 6689747, 6689746) and the remote start procedure. If your S70 has an interlock control system (BICS™) and you need to start the engine without sitting in the cab for diagnostics, this section shows you the correct wiring connections. No guesswork.

Audience Fit: Who Should Use This Factory Manual

If you own an S70 Skid-Steer Loader (serial numbers A3W611001 & above) and do your own repairs, this manual is for you. It assumes you have basic mechanical skills but not OEM training. The service schedule chart on page 15 tells you when to change engine oil, hydraulic fluid, and chaincase oil. Any DIY owner who has tried to replace a hydraulic filter without knowing the correct fluid type will appreciate the Hydraulic/Hydrostatic Fluid Chart. For the beginner: the manual starts with safety instructions and serial number location – no skipped steps.

Source Authenticity: Factory OEM vs Aftermarket Documentation

I refuse to use aftermarket manuals for anything with hydraulic circuits. They leave out torque sequences, misprint wire colors, and sometimes skip entire test procedures. This manual is the original Bobcat print – copyright 2008, printed in the U.S.A. The page numbers match the factory binder exactly. It is not a scanned copy with missing pages. Compare this with Bobcat S175 2008 Service Manual – OEM Factory Repair Specs for similar loader systems. The Manual Transmission analogy applies: a factory service manual is like having the original engineering drawings, not a generic repair guide.

What torque specs are included for the final drive transmission (chaincase)?

The manual lists the checking and adding oil procedure, but the specific torque for the chaincase cover bolts is given on page 32. Do not use aftermarket values – use the factory spec.

Does the manual cover the full engine overhaul or just maintenance?

It covers the Engine Lubrication System (oil changes, filter replacement) and cooling system, but for major engine internal overhaul you would need the separate Engine Service Manual. This manual covers everything else on the loader: hydraulic system, electrical, drivetrain, cab, and safety systems.

You have seen what happens when you rely on aftermarket info – stripped threads, incorrect wiring, and dangerous hydraulic releases. Get the 420-page factory document that Bobcat dealers use. Access the Factory Manual and keep it in the shop so you never have to guess a spec again. If you have worked on a Manual Transmission before, you know that one wrong torque value can junk the whole gearbox. This S70 manual is the same principle – factory specs only.