Description

Bobcat S70 2008 Service Manual – The Factory File Your Shop Needs

You’re working on a Bobcat S70 and the lift arms won’t hold. You check the fluid, swap a valve, but the problem’s still there. Without the factory service manual, you’re burning billable hours on guesswork. I’ve spent 28 years torquing head bolts and chasing electrical gremlins, and the difference between a repair that holds and one that comes back is having the Bobcat S70 2008 Service Manual open on the bench. This isn’t a reprint or a third-party summary – it’s the same 420-page document Bobcat dealers use.

What the 420 Pages Cover – from Fire Prevention to Final Drive

This manual starts where it should: safety. The FOREWORD and SAFETY INSTRUCTIONS sections drill in the warnings about lift arm support devices and hydraulic fluid injection. Then it moves into SERIAL NUMBER LOCATIONS so you verify the machine before you order parts. The DELIVERY REPORT and BOBCAT LOADER IDENTIFICATION chapters help track the unit history. After that, the SAFETY AND MAINTENANCE section walks you through LIFTING AND BLOCKING THE LOADER, the LIFT ARM SUPPORT DEVICE install and removal, and even the OPERATOR CAB raising/lowering procedure with emergency exit details. TRANSPORTING, TOWING, and the REMOTE START TOOL (MEL1563 and the service kit 6689779) are covered with part numbers and step-by-step steps. The SERVICE SCHEDULE chart tells you when to do what. AIR CLEANER SERVICE, ENGINE COOLING SYSTEM, FUEL SYSTEM, ENGINE LUBRICATION SYSTEM, HYDRAULIC/HYDROSTATIC SYSTEM, FINAL DRIVE TRANSMISSION (CHAINCASE) – each has its own chapter with fluid charts, filter part numbers, and removal/replacement procedures. The AUXILIARY CONTROL LOCKBOLT, BOB-TACH inspection, LUBRICATION LOCATIONS, TIRE MAINTENANCE (wheel nut torque patterns), SPARK ARRESTOR MUFFLER cleaning, PIVOT PINS inspections, SEAT BAR RESTRAINT SYSTEM operation, and LOADER STORAGE – it’s all here. No fluff, no generic advice.

Engine and Electrical Systems – Verified Factory Specs

The manual gets into the engine side with the ENGINE LUBRICATION SYSTEM and ENGINE COOLING SYSTEM procedures. Want the correct oil viscosity for a San Antonio summer? The Engine Oil Chart is in there. Need to bleed air from the fuel system after a filter swap? The FUEL SYSTEM chapter gives the exact procedure. Electrical work is covered under the FIRE PREVENTION section (Electrical subsection) and the REMOTE START TOOL wiring harness setups. The BICSTM valve electrical testing (solenoid resistance checks) is detailed in the HYDRAULIC CONTROL VALVE section. If you’re chasing a no-start or a solenoid that won’t pull in, this manual gives you the pinouts and test steps, not a wiring diagram drawn by someone who’s never seen a loader.

Hydraulic System – BICSTM Valve and Cylinder Work

The HYDRAULIC SYSTEM section is the heart of this manual. It opens with HYDRAULIC/HYDROSTATIC SCHEMATICS – actual OEM flow diagrams, not aftermarket approximations. The GLOSSARY OF SYMBOLS and a TROUBLESHOOTING CHART give you a diagnostic path before you break a wrench. Then it goes into the CYLINDER (LIFT) and CYLINDER (TILT) chapters with testing, removal and installation, parts identification, and disassembly/assembly steps. The MAIN RELIEF VALVE is described with testing procedures for machines with and without auxiliaries. The HYDRAULIC CONTROL VALVE chapter is a deep dive: BICS™ Valve removal, lift arm by-pass orifice, pressure differential valve, check valves, solenoid testing and identification chart, load check valves, port relief/anti-cavitation valves, lift and tilt lock blocks, spool detent disassembly and assembly, auxiliary spool, and the auxiliary pivot bracket. Every part has an identification chart. That’s the level of detail that saves you from ordering the wrong seal kit.

Who Needs This Manual on the Workbench

If you’re a home-garage owner with an S70 that you use for property work, you need this. The step-by-step procedures are written for someone who has basic tools but not dealer training. The safety warnings are blunt – they tell you when to use a lift arm support device and when to stop. For a shop owner, this manual keeps your technicians from losing time on bad torque specs or miswired solenoids. Beginners: the HYDRAULIC/HYDROSTATIC FLUID CHART and the LUBRICATION LOCATIONS diagram take the guesswork out of maintenance. If you’re comparing this to a third-party binder you found online, stop. Compare it to the Manual Transmission guide you’d trust – except this is the actual factory document. Another Manual Transmission resource won’t give you the BICSTM valve solenoid resistance values or the correct procedure for purging air from the chaincase. This will.

Source Authenticity – Why Only OEM Documentation Works

I’ve seen aftermarket manuals that skip the “Lift Arm Support Device” warning because the writer thought it was obvious. Obvious doesn’t stop a loader arm from dropping on your chest. The Bobcat S70 2008 Service Manual is a genuine OEM print – notice the “Dealer Copy – Not for Resale” on every page. The torque values for wheel nuts, hydraulic fittings, and engine components come from Bobcat Engineering, not from a forum post. The diagrams for the Remote Start Tool harnesses (MEL1565/MEL1566) are factory-correct. If you rely on a third-party manual, you risk cross-threading a fitting or shorting a solenoid. This document eliminates that risk.

Frequently Asked Questions

Does this manual cover the Bobcat Interlock Control System (BICS™)?

Yes. The HYDRAULIC CONTROL VALVE chapter includes the BICS™ valve removal, installation, solenoid testing, and identification charts. The entire BICS™ system is referenced throughout the safety and hydraulic sections.

Are torque specifications given in Imperial units?

Yes – all torque values in the manual are in foot-pounds and inch-pounds. No metric confusion.

What years of the S70 does this manual cover?

This 2008 edition covers S70 serial numbers A3W611001 & Above and A3W711001 & Above. If your machine falls in that range, you have the correct document.

Can I use this manual for diagnostic troubleshooting without reading the whole thing?

You can, but reading the TROUBLESHOOTING CHART and the HYDRAULIC/HYDROSTATIC SCHEMATICS first will save you time. The manual is structured so that a specific symptom leads you to the right test procedure. Skip the safety section at your own risk.

You’ve got a Bobcat S70 that needs work. You can either keep guessing with generic internet advice, or you can access the factory manual that the dealers use. The wiring diagrams are correct, the torque values are verified, and the safety procedures are spelled out. Access the Factory Manual and put it on the workbench next to your torque wrench.

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