Bobcat S250 & S300 Skid-Steer Loader Service Manual 6904158 – 2008 PDF Repair Guide

Description

The Bobcat S250 & S300 Skid-Steer Loader Service Manual (P/N 6904158) is the full workshop repair guide for these two Bobcat skid-steer loaders, released for the 2008 model year and covering early serial-number machines from S/N 530911001, 531011001, 531111001 and 531211001 upward. Every major system — from the Kubota V3300-DI-T turbo diesel and the tandem hydrostatic drive to the hydraulic control valve, chaincase, BICS electrical system and HVAC — is documented with the step-by-step disassembly, inspection, assembly and adjustment procedures used by trained Bobcat technicians.

File Details

• Manual type: Service / Workshop Repair Manual
• Brand: Bobcat
• Models covered: S250, S300 Skid-Steer Loader
• Document number: 6904158
• Edition / date: 2008 (revised through January 2008)
• Language: English
• Page count: 936 pages
• File format: PDF

Chapters Covered

• Safety & Maintenance — safety instructions, serial-number locations, lifting and blocking the loader, lift arm support device, operator cab and ROPS/FOPS service, service schedule, air cleaner, engine cooling system, engine lubrication system, final drive transmission (chaincase), fuel system, hydraulic/hydrostatic fluid service, lift arm support, towing, transporting, spark arrestor muffler, pivot pins, tire maintenance, storage and return to service, stopping the engine and leaving the loader, and Bob-Tach hand-lever and Power Bob-Tach maintenance.
• Hydraulic System — hydraulic/hydrostatic schematics, hydraulic system information, hydraulic control valve (standard and ACS/SJC), lift cylinder, tilt cylinder, Bob-Tach cylinder, main relief valve, lift arm bypass control valve, hydraulic pump (standard, standard high-flow, SJC, SJC high-flow), hydraulic/hydrostatic filters, hydraulic fluid reservoir, oil cooler, bucket position valve, rear auxiliary diverter valve, front auxiliary hydraulic coupler block, Power Bob-Tach block.
• Hydrostatic System — hydrostatic system information, hydrostatic motor, two-speed hydrostatic motor, hydrostatic motor carrier (standard and SJC), charge pressure, hydrostatic pump (standard and SJC), drive belt, case drain filter.
• Drive System — brake disc service (early and late serial), two-speed brake block, chaincase covers, drive components (axle seals, axles, sprockets, bearings, drive chains).
• Main Frame — seat bar, operator cab, operator seat (standard and suspension), Bob-Tach (hand lever and Power), lift arms, rear grill, rear door, fuel tank, control pedals and linkages, control pedals (ACS), control panel (standard, ACS and SJC variants), control handle/lever, joystick control, access panels, windows (front, rear, side, top), cab door.
• Electrical System & Analysis — electrical system information, battery, alternator, starter, instrument panels, lights, Bobcat controllers (main, ACS, SJC drive), speed sensor (SJC), diagnostic service codes, BICS, seat bar sensor, traction lock, control system (ACS), electrical/hydraulic control identification charts, service PC connection, calibration (actuator test, lift & tilt ACS/SJC, hydrostatic pump SJC), steering drift compensation, flywheel RPM sensor, control panel setup, password setup, maintenance clock, back-up alarm system.
• Engine Service — engine information and specifications, engine removal and installation, engine mounts, compression testing, engine speed control, muffler, air cleaner, engine cooling system, lubrication system, fuel system, cylinder head, crankshaft and pistons, camshaft and timing gears, turbocharger, flywheel and housing.
• Heating, Ventilation, Air Conditioning — A/C system flow, regular maintenance, troubleshooting, system charging and reclamation, compressor, condenser, receiver/drier, evaporator/heater unit, thermostat, expansion valve, evaporator, heater coil, blower fan, heater valve.
• Specifications — S250 and S300 loader specifications, torque specifications for bolts, hydraulic connection specifications, hydraulic/hydrostatic fluid specifications, conversions.

Altogether, this Bobcat S250 S300 service manual gives a technician a single-source reference for the two machines: complete removal-and-installation procedures, disassembly-and-assembly sequences with torque values and part identification, hydraulic and hydrostatic schematics with legends and pressure settings, wiring schematics organised by connector and wire number, diagnostic service code tables, BICS interlock test routines, ACS/SJC calibration procedures, and engine service data for the Kubota V3300-DI-T. It is the same level of documentation a Bobcat dealer workshop uses on the shop floor.

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What You Can Do With This Bobcat S250 S300 Service Manual

• Diagnose and repair hydraulic faults by tracing the correct circuit on the factory schematic before opening a single fitting.
• Rebuild lift, tilt and Bob-Tach cylinders with correct seal orientation, torque values and testing criteria.
• Service the tandem hydrostatic pump and motors, set charge pressure, and carry out the SJC mechanical and hydraulic controller neutral adjustments.
• Remove and reinstall the engine and hydrostatic pump assembly as one unit using the documented lifting bracket dimensions.
• Read and clear Bobcat diagnostic service codes, then test the BICS seat bar sensor, traction lock and hydraulic lock valves step by step.
• Perform ACS and SJC lift-and-tilt calibrations, hydrostatic pump calibration, and adjust steering drift compensation.
• Recharge the A/C system, replace the receiver/drier, compressor, condenser and expansion valve with the correct PAG 100 oil quantity and pressures.
• Split the chaincase, replace drive chains, axle bearings, sprockets and brake discs.

Why the Correct Procedures and Specifications Matter

On a hydrostatic skid-steer loader, small errors are expensive. The wrong relief setting, a mis-seated cylinder seal, a poorly aligned actuator or an uncalibrated swashplate can burn a pump, ruin a drive motor or leave the machine with creep, drift and poor breakout force. This Bobcat S250 and S300 repair manual provides the exact torque values, pressure readings, flow percentages, clearances, shim stacks and calibration sequences the factory specifies — so repairs are done right the first time rather than by trial and error.

Instant PDF Delivery

Your Bobcat S250 S300 Skid-Steer Loader Service Manual 6904158 is delivered instantly as a downloadable PDF after checkout. There is no shipping, no waiting and no physical book to keep track of. Read it on a laptop or tablet in the workshop, print just the pages you need for the job at hand, and keep the full manual on file for future repairs.