Bobcat 863 & 863H High Flow Skid Steer Loader Service Manual PDF – 6900648 Repair Guide

Description

This Bobcat 863 & 863H High Flow Skid Steer Loader Service Manual is a 534-page PDF workshop guide for the 863 and 863H loaders, including the high-flow hydraulic option. It is organized for technicians who need to diagnose, repair, adjust and maintain the machine using the procedures and values printed in the manual. The file carries the Bobcat service manual number 6900648 and applies to the serial number ranges listed below.

File Details

• Manual type: Service Manual
• Brand: Bobcat
• Models: 863, 863H High Flow
• Document number: 6900648
• Language: English
• Page count: 534
• File format: PDF
• Serial coverage: S/N 514425001 & Above; S/N 514525001 & Above; S/N 514625001 & Above
• Revision shown: Revised Feb. 99

Chapters Covered

• Preventive Maintenance
• Hydraulic System
• Hydrostatic System
• Drive System
• Main Frame
• Electrical System
• Engine Service
• Systems Analysis
• Specifications
• Advanced Hand Control System

Preventive Maintenance

The preventive maintenance chapter opens with the service schedule and interval table, covering checks and service at 8-10, 50, 250, 500, 1000 and 3000 hours. It includes engine oil, air cleaner, cooling system, lift arm lubrication, tires, seat belt and seat bar interlocks, Bobcat Interlock Control System (BICS) functions, safety signs, operator cab mounting, fuel filter water removal, hydraulic fluid and hoses, chaincase oil, battery, pedals, wheel nut torque, parking brake, alternator belt, drive belt, steering shaft greasing, hydraulic reservoir breather cap, hydraulic/hydrostatic filter, engine oil and filter, final drive oil, hydraulic motors, fan drive gearbox, engine valves and timing belt. The same chapter also includes lifting and blocking the loader, the lift arm support device, operator cab raising and lowering, emergency exit, seat bar restraint system inspection, air cleaner service, fuel system service, engine lubrication, cooling system cleaning, hydraulic/hydrostatic fluid service, tire maintenance, chaincase oil checks, lubrication points, fan gearbox checks, Bob-Tach inspection and remote start switch setup.

Hydraulic System

The hydraulic system chapter provides troubleshooting charts and service procedures for the loader hydraulics. It covers lift cylinder checking and removal, tilt cylinder checking and removal, hydraulic cylinder disassembly and assembly, main relief valve testing and adjustment, select valve 863H high flow pump relief valve checking, hydraulic control valve identification, removal and installation, load check valve, lift base end restrictor, main relief valve, port relief valves, anti-cavitation valve, rubber boot, lift spool and detent, tilt spool and centering spring, auxiliary spool, auxiliary electric solenoid, H-port auxiliary section, spool seal installation and inspection. It also includes the BICS control valve, lift arm by-pass control valve, hydraulic pump output testing and rebuild, hydraulic fluid reservoir, hydrostatic filter housing, control pedals, pedal interlock linkage, rear auxiliary diverter and the hydraulic/hydrostatic schematic.

Hydrostatic System

The hydrostatic system chapter explains replenishing valve function and provides troubleshooting. It covers the front panel for M46 pump and AHC, front panel for M44 hydraulic pump, steering levers for M46 pumps and AHC, steering levers for M44 pumps, control tower, solid steering linkage neutral adjustment for the M46 pump, steering linkage for the M44 pump and its adjustment. Hydrostatic motor service is split by serial number ranges and includes removal, disassembly, inspection and assembly. Motor carrier removal, disassembly and assembly are included, along with hydrostatic pump M46 and M44 removal, separation, charge pump service, disassembly, inspection and assembly. The chapter also covers swashplate neutral adjustment, displacement control servo, drive belt shield, drive belt adjustment and replacement, drive belt tensioner pulley, tension spring and hydraulic/hydrostatic oil cooler removal and installation.

Drive System

The drive system chapter contains procedures for the parking brake pedal, parking brake disc, front chaincase cover, rear chaincase cover, axle seal, axle sprocket and bearings, drive chain and chaincase fluid. These sections include removal, installation, disassembly, assembly, inspection, torque values and service notes for the final drive components.

Main Frame

The main frame chapter covers the seat bar, operator cab gas cylinder, operator cab, operator seat, Bob-Tach, lift arms, rear grill, rear door and fuel tank. It includes removal and installation procedures, component assembly details, inspection points, adjustment procedures and related service notes for the loader structure and operator station.

Electrical System

The electrical system chapter begins with a troubleshooting chart and electrical system information including fuse location. It covers battery removal, installation, servicing and booster battery use, alternator output testing, regulator testing, rectifier tests, rotor and stator tests, alternator removal, disassembly, assembly and installation, starter removal, parts identification, disassembly, assembly, external pinion service, inspection and repair, magnetic switch test and no-load test. It also includes the standard instrument panel, front lights, relay switch location and wiring schematics for 863 BOSS, 863 without BOSS, high flow, advanced hand control and option harnesses.

Engine Service

The engine service chapter covers removal and installation of the engine with hydrostatic pumps, engine mounts, flywheel, flywheel housing, glow plugs, valve clearance adjustment, fuel injection pump description, removal, timing and installation, fuel injector removal, checking, disassembly and assembly, timing belt inspection, removal, installation and belt replacement in the loader, valve timing, Deutz engine tools, reconditioning the engine, cylinder liners, camshaft bearings, control rod guide bushing, rear cover seal, crankshaft, connecting rod, piston and piston pin, cylinder head, rocker arm and bracket, front cover, turbocharger, engine oil cooler and crankshaft gear mounting bolt torque procedure.

Systems Analysis

The systems analysis chapter covers BICS with and without the press-to-operate button, BICS system controller troubleshooting and removal, seat bar sensor, seat sensor, traction lock, BOSS diagnostic tool procedure, monitor service codes, BOSS instrument panel removal, PWM module description and troubleshooting, PWM control handle testing, PWM electric solenoid testing and the electrical/hydraulic controls reference chart.

Specifications

The specifications chapter includes loader specifications, performance, controls, engine data, hydraulic system data, electrical data, drive system data, capacities, tires, engine specifications for BF4M1011 and BF4M1011F, engine torque values, hydraulic connection specifications for flare fittings, O-ring flare fittings, O-ring face seal connections, straight thread O-ring fittings, port seal fittings, tubelines and hoses, hydraulic/hydrostatic fluid specifications, standard torque specifications for bolts, decimal and millimeter equivalents and U.S. to metric conversion charts.

Advanced Hand Control System

The advanced hand control system chapter covers A.H.C. components identification, A.H.C. troubleshooting, actuator voltage test with and without test harness, handle control unit test, A.H.C./PWM controller removal, installation, test, description and troubleshooting, handle control unit removal, control unit connector, switch handle removal and installation, A.H.C. handle removal and assembly, A.H.C. steering lever removal and steering lever boot, actuators removal, disassembly and assembly, mounting plate, BICS valve lift arm by-pass orifice, check valve, lock valve, BICS valve solenoid, BICS valve removal and installation, hydraulic control valve removal, installation, disassembly, assembly, identification chart, load check valve, lift base end restrictor, main relief valve, port relief valves, anti-cavitation valve, rubber boot, lift and tilt spool, auxiliary spool, auxiliary electrical solenoid, spool seal installation and H-port auxiliary section.

Diagnostics, Schematics and Service Data

This Bobcat 863 and 863H High Flow service manual is built around real shop work: troubleshooting charts help isolate hydraulic, hydrostatic, electrical, engine, BICS and advanced hand control problems, while wiring schematics and the hydraulic/hydrostatic schematic show how circuits and oil flow are routed. Exploded views and parts identification pages support teardown and reassembly. Torque tables, pressure settings, service limits, clearances, adjustment values, fluid capacities and service intervals are included throughout the manual. The hydraulic system section references a main relief setting of 3000 PSI (20685 kPa), charge pressure data, high flow pump testing and other pressure and flow values. Engine service data covers the Deutz BF4M1011 and BF4M1011F engines, including timing belt procedures, valve clearance, injector service and reconditioning measurements. The systems analysis chapter includes BICS controller light codes and service codes, making it possible to diagnose interlock, seat sensor, seat bar sensor and traction lock faults before replacing parts.

Why This Bobcat 863 Service Manual Matters

IMAGES PREVIEW

Whether you are maintaining a working loader, repairing a hydraulic fault, rebuilding a hydrostatic pump or diagnosing an electrical or BICS problem, this PDF service manual gives you the actual procedures and specifications for the Bobcat 863 and 863H High Flow. It covers preventive maintenance intervals, hydraulic pump output testing, main relief adjustment, hydrostatic neutral adjustment, steering linkage setup, drive chain and chaincase service, engine timing belt replacement, fuel injection pump timing, injector testing, turbocharger service, electrical component testing, wiring schematics, AHC actuator voltage checks and much more. Instead of relying on guesswork, you can follow the disassembly sequences, torque values, pressure settings and diagnostic charts printed in the manual. Delivered as an instant PDF download, this Bobcat 863/863H service manual can be viewed on a computer, tablet or phone and printed for the shop. No shipping, no waiting, and the pages you need are available immediately after checkout.