Description

Bobcat S100 2008 Service Manual – Factory Specs for the Skid-Steer

You’ve got a skid-steer that’s throwing codes, leaking hydraulic fluid, or just won’t start. The aftermarket PDF you obtained last week gave you a torque value that stripped three wheel nuts. Bobcat S100 2008 Service Manual is the factory document – 500 pages of what Bobcat actually wanted a tech to know. No condensed version, no guesswork. If you work on these machines for a living or own one, this is the only print you should have on the bench.

S100 Skid-Steer: What the 500 Pages Cover

This manual isn’t a pocket guide. It’s a full service reference that walks you through every system on the S100. The table of contents starts with Safety Instructions and Fire Prevention – sections that tell you exactly which fluids are safe, how to handle electrical arcs near fuel, and what to do if you’re welding on the frame. Then it dives into the Engine lubrication system (oil charts, filter replacement), fuel system (biodiesel blend specs, air purge), and the cooling system. The Hydraulic System chapter alone runs well over 100 pages. You get pump tests, main relief valve adjustment, cylinder disassembly, and the complete lift arm bypass control valve procedure. Page numbers? You’ll find what you need by section, not by hunting through a reprinted mess.

Why OEM Documentation Matters on the Workbench

The aftermarket service manual I pulled off a forum once told me to adjust the hydraulic pressure with the lift arms up. That’s a trip to the hospital. The 2008 Bobcat manual has a full page on Lifting and Blocking the Loader – with approved lift arm support devices and a REMOTE START TOOL KIT procedure that keeps you out of the pinch zone. It also lists the Loader Serial Number location (S/N A2G711001 & Above) and Engine Serial Number so you match the exact machine build. Every torque spec, wiring diagram, and fluid capacity comes from Bobcat Company, not a copy shop.

Fire Prevention and Electrical – Two Sections You Need

Section FIRE PREVENTION covers Maintenance, Operation, Electrical, Hydraulic System, Fueling, Starting, and Welding/Grinding. The Electrical subsection is critical – it tells you how to safely disconnect batteries, avoid sparks around the fuel tank, and what type of fire extinguisher to keep within reach. Then the manual moves into the OPERATOR CAB section, which includes cab door sensor adjustment and raising/lowering the cab. You also get the Remote Start Tool Kit (MEL1563 and 6689779) with wiring harness pinouts. Without the factory electrical routing, you’ll spend hours chasing shorts.

3 Safety Warnings You Cannot Skip

First: never service the loader without instructions. The manual says it plain on page 1. Second: never go under raised lift arms unless they’re secured by an approved support device – replace it if it’s damaged. Third: lead‑acid batteries produce explosive gas. Keep flames away, wear eye protection, flush acid contact with water. These warnings are direct from the Bobcat engineering team, not filtered through a third party.

Does This Manual Include Common Repairs?

It does. You get step‑by‑step procedures for replacing the hydraulic charge filter, removing air from the fuel system, adjusting the main relief valve, and servicing the final drive transmission (chaincase). The HYDRAULIC / HYDROSTATIC SYSTEM section has fluid charts, filter part numbers, and a breather cap replacement. If you need to pull the hydraulic pump, the manual gives direct pump test methods at the quick couplers and the charge section. For related reading, see the Bobcat S100 2008 Service Manual – Section: Lift Arm Bypass Control Valve. That valve controls lift arm descent speed – critical for safety.

Get the Right Torque Data from the Source

Wheel nuts, pivot pins, cylinder bolts – every fastener gets a factory torque. The manual also includes a SERVICE SCHEDULE chart that tells you how often to change oil, filters, and lubricate the Bob‑Tach system. Bobcat S100 2008 Service Manual is the only source for these values. You can cross‑reference with the Bobcat S100 2008 Service Manual – Section: Inst for installation steps. Don’t rely on a generic torque chart from a manual transmission forum – the Bobcat spec is unique. For comparison, the basics of manual transmission design are explained at Manual Transmission on Wikipedia, but that won’t help you set the wheel nut torque on an S100.

Q: Is this manual the same as the one dealers use?

Yes. This is the dealer copy printed by Bobcat for their own service bays.

Q: Will this manual help me diagnose a no‑start condition with the Bobcat Interlock Control System (BICS)?

It will. The manual includes the Remote Start Procedure using kit 6689779, Service Tool Harness Control (MEL1565), and the communicator harness. It walks you through testing the cab door sensor, checking the lock valve solenoid, and reading system pressures. The electrical schematics in the HYDRAULIC / HYDROSTATIC SCHEMATIC chapter show exactly which wire goes where. If BICS locks you out, you’ll find the bypass valve removal steps and the procedure to reset the control unit. A lot of techs skip the serial number check – the manual tells you which S/N range your machine falls in so you use the right wiring diagram. Without it, you’re guessing which relay is which.

If you service any machine from the Bobcat S100 skid‑steer family, this is the only reference you need. Factory print, 2008 publication, 500 pages of verified procedures. Access the Factory Manual and keep it on your workbench – or on your tablet – because the next time you reach for a torque wrench, you want the right number the first time.

• Manual Transmission