Description

Bobcat A300 2008 Service Manual

If you are cracking open a Bobcat A300 2008 Service Manual for the first time, you are holding 768 pages of factory procedure that Bobcat Company printed for their dealers. Not a reprint. Not a third-party compilation. This is the same document the techs at the dealership use when they are on the clock and the customer is waiting. I have been turning wrenches for twenty-eight years, and I can tell you the difference between having this on the bench and guessing from a scan off some forum. The first thing you will notice is page 1: serial number range 521111001 & Above. If your machine does not fall inside that range, stop now and find the right book.

What’s Actually Inside This 768-Page File?

The manual is broken into two main sections: Safety and Maintenance, and Hydraulic System. Within Safety and Maintenance you get the full service schedule chart, air cleaner service, engine cooling system cleaning, fuel system specifics (including removing air from the fuel system), engine lubrication with the oil chart and filter replacement, hydraulic/hydrostatic fluid checks and filter swaps, final drive transmission (chaincase) oil, fan gearbox, Bob-Tach and Power Bob-Tach inspection, and tire maintenance with wheel nut torque. That is the stuff you need to keep the loader running day to day. Then the Hydraulic System section dives into schematics, troubleshooting, tighten procedures, and step-by-step disassembly and assembly for every cylinder: lift, tilt, Power Bob-Tach, and steering. You also get the main relief valve adjustment, the hydraulic control valve with all the BICS™ valve sub-components, the lift arm by-pass control valve, the hydraulic pump (auxiliary and steering pump output checks), the filter housing, fluid reservoir, bucket position valve, and the rear auxiliary diverter valve. If you need to understand how the BICS™ solenoid works, the manual gives you a solenoid testing procedure and an identification chart. That is the kind of detail you pay for.

Hydraulic System Coverage: Lift Cylinders to BICS Valve

Skim through the hydraulic section and you will see that each cylinder (lift, tilt, Power Bob-Tach, steering) has its own sub-section with checking, removal and installation, base pin removal (if applicable), parts identification, disassembly, and assembly. For the hydraulic control valve, the manual covers actuator removal both in and out of the loader, each BICS™ valve solenoid removal and testing, lift and tilt spool removal, auxiliary spool removal, and even the anti-cavitation valve and port relief valve. If you have ever had a lift arm drift down on you because the lift base end restrictor was clogged, you know why having the factory procedure for the control valve matters. The manual also includes a Bobcat A300 2008 Service Manual – Section: Front Auxiliary Hydrualic Coup section that covers the front auxiliary hydraulics coupler details so you do not mix up the relief pressures.

Safety: Not a Suggestion, It’s a Procedure

Page 3 of this 2008 manual prints the maintenance safety warnings in bold. I have seen guys skip the lift arm support device because they are in a hurry. The manual says it straight: never work on the loader with the lift arms up unless they are held by an approved device, and replace it if damaged. It also covers fire prevention, remote start procedure (both with and without attachments control harness), towing, transporting, and emergency exit from the cab. The safety section includes a Manual Transmission reference for the driveline lock-out procedure if you are working on the final drive. You do not guess safety — you read the page.

Why OEM Factory Specs Beat Aftermarket Reprints

I have been burned by aftermarket manuals that list the wrong torque for main relief valve adjustment. This manual is an original OEM print from Bobcat Company, printed in March 2008 (PN 6901756). The torque specs, fluid capacities, and pressure settings come straight from the engineering department, not from someone transcribing a worn photocopy. The hydraulic/hydrostatic schematics on the foldout pages are factory originals. If you are chasing a hydraulic drift issue, you need the exact internal orifice sizes and the BICS™ valve check valve removal steps. Aftermarket reprints often skip those details because they do not have the printing plates. The Bobcat A300 2008 Service Manual – Section: Fuel System pages, for example, give you the fuel lift pump strainer cleaning procedure and the air bleed method that no generic manual covers.

Audience Fit: Who Needs This Manual?

If you own a Bobcat A300 skid-steer loader with all wheel steer and the BICS™ interlock system, this 768-page service manual is the only document that covers your machine. It assumes you are mechanically competent — it does not hold your hand through basic terms. It is written for the technician who knows how to use a multimeter and a torque wrench. That said, a careful DIY mechanic who follows the safety warnings and checks the serial number range will get through the procedures. The manual expects you to have the Operation and Maintenance Manual and the Operator’s Handbook alongside it; the service manual focuses on repair. One of the most useful sections for the home garage guy is the “Lifting and Blocking the Loader” procedure, which shows you where to place jack stands and how to set the lift arm support device correctly. The Bobcat A300 2008 Service Manual also contains a delivery report form that dealers use to document pre-delivery checks — you can use that same checklist after a major repair to make sure nothing is missed. If your loader is outside the serial range or you need the Manual Transmission section for a different model, this is not the right manual.

3 Maintenance Procedures You Can Stop Guessing On

First, the hydraulic/hydrostatic filter replacement: the manual spells out the exact tightening sequence for the filter housing mount, not just “tighten securely.” Second, the fuel filter bleeding sequence — it gives you the direction of the priming pump and the bleed screw location on the fuel lift pump strainer. Third, the engine oil and filter change with the oil chart that specifies viscosity grades for your operating temperature range. These three items alone save you an hour of guessing every time you service the loader. The manual also has a service schedule chart that tells you at what hour intervals to check each system. That chart is on page 1 of the maintenance section (not the same as the cover page). I have had that page laminated and tacked to the inside of my toolbox door for years.

Does this manual include wiring diagrams?

The manual includes hydraulic/hydrostatic schematics but does not contain full electrical wiring diagrams for the entire machine. It does cover the BICS™ valve solenoid testing and the bucket position valve solenoid testing with resistance values, so you can diagnose electrical faults on those specific components. If you need the main harness layout, you will need the separate electrical schematics manual from Bobcat.

Can I use this manual for the Bobcat A300 without AWS (All Wheel Steer)?

No. The cover specifically says “With ALL WHEEL STEER (AWS).” If your machine is the standard two-wheel steer A300, the steering cylinder removal and the rear axle section will be wrong.

You have put off chasing that hydraulic leak or that intermittent BICS lockout long enough. Access the Factory Manual and get the actual text and torque values Bobcat printed for their dealers. It is the same 768 pages, the same illustrations, the same safety warnings. No one ever regretted having the right specs on the bench when a loader is down.