Bobcat S590 Skid-Steer Loader Service Manual

Description

Bobcat S590 Skid-Steer Loader Service Manual Overview

This comprehensive Bobcat S590 Skid-Steer Loader Service Manual (publication 6990176enUS) delivers full workshop repair, routine maintenance, and troubleshooting guidance for Bobcat S590 loaders across multiple serial number ranges. Built specifically for workshop mechanics, field service technicians, and owner-operators, this service manual provides step-by-step disassembly instructions, factory torque specifications, hydraulic schematics, and mechanical diagnostic instructions to keep your Bobcat S590 skid-steer loader operating safely and at peak performance.

File Details

• Manual Type: Service Manual
• Brand: Bobcat
• Model: S590 Skid-Steer Loader
• Document Number: 6990176enUS (08-22) (L)
• Publication Date: August 2022
• Covered Serial Numbers: S/N ANMN11001 & Above, S/N ANMP11001 & Above, S/N AZND11001 & Above, S/N AZNE11001 & Above, S/N B5N411001 & Above
• Language: English
• Page Count: 1302 pages
• File Format: PDF

Chapters Covered

• Foreword & Safety Instructions: Safety Guidelines, Fire Prevention Protocols, Welding and Grinding Precautions, Serial Number Locations, Delivery Report, Loader Component Identification
• Safety & Maintenance (Section 10-01):
  • Lifting and Blocking the Loader
  • Lift Arm Support Installation and Removal
  • Operator Cab (ROPS/FOPS Inspection, Raising and Lowering Procedures, Cab Door Sensor, Special Applications Kit, Forestry Door and Window Kit)
  • Transporting the Loader on a Trailer and Towing Guidelines
  • Remote Start Tool Kits (MEL1563 Kit, Service Tool Kit 7217666, Loader Harness 6689747, and PC Diagnostic Interface)
  • Service Schedule (10-Hour, 50-Hour, 100-Hour, 250-Hour, 500-Hour, 1000-Hour, and 24-Month Maintenance Intervals)
  • Engine Air Cleaner Servicing (Service Code M0117, Dual Filter Element Replacement)
  • Engine Cooling System (Earlier Models and Later Models Cleaning, Coolant Inspection, Propylene Glycol 53/47 Mixture Replacement)
  • Fuel System (ASTM D975, EN590 Specifications, Biodiesel Blend Maintenance, Water Draining, Filter Replacement, and Priming Bulb Air Removal)
  • Engine Lubrication System (API CI-4 / ACEA E7 Oil Specifications, Filter Servicing, and Remote Drain Hose Operation)
  • Hydraulic / Hydrostatic System (Earlier and Later Models Fluid Inspection, ISO Viscosity Selection, Reservoir Draining, Main and Charge Filter Replacement, Breather Cap)
  • Final Drive Transmission (Chaincase Fluid Level Check and Pump-Out Replacement)
  • Bob-Tach Attachment Mounting System (Hand Lever and Power Bob-Tach Inspection, Wedge Engagement, and Linkage Maintenance)
  • Lubricating the Loader (11 Defined Grease Locations including Pivot Pins and Cylinder Bushings)
  • Tire Maintenance (Wheel Nut Torquing, Inflation Pressures, and Tire Rotation)
  • Spark Arrester Muffler (100-Hour Chamber Cleanout Procedure)
  • Pivot Pin Inspection and Retaining Bolt Torquing
  • Loader Storage, Return to Service Procedures, and Machine Shutdown Protocols
  • Emergency Cab Exits (Rear Window Latch and Rubber Cord Removal, Front Door Emergency Release and Hinge Reassembly)
  • Seat Belt and Restraint System Inspection
• Hydraulic System (Section 20-01):
  • Hydraulic System Information, Standard Graphical Symbols Glossary, and Troubleshooting Charts
  • Complete Hydraulic & Hydrostatic Schematics (Manual and Selectable Joystick Controls [SJC], Standard and Option-Equipped, High Flow, Ride Control, and 2-Speed Circuits)
  • Hydraulic Lift Cylinders (Internal Leakage Testing, Removal, Disassembly, Seal Expansion and Sizing, Gland Nut Torquing, and Installation)
  • Hydraulic Tilt Cylinders (Testing, Pivot Pin Drift Removal, Overhaul, and Reassembly)
  • Lift Cylinders for S/N AZND11152 & Above (Updated Gland Nut Tooling, Piston Nut Torquing, and Seal Procedures)
  • Tilt Cylinders for S/N AZND11152 & Above (Updated Assembly, Seal Placement, and Installation)
  • Power Bob-Tach Hydraulic Cylinder (Functional Testing, Cylinder Removal, Gland Servicing, and Overhaul)
  • Main Relief Valve (Auxiliary Coupler Flow and Pressure Testing, Adjusting Screw Calibration, Removal, and O-Ring Resealing)
  • Hydraulic Control Valve (Standard Manual Foot-Control Valve Spool Identification, Load Checks, Anti-Cavitation Valves, Port Reliefs, and Solenoids)

Together, these technical chapters provide service personnel with a thorough, standardized guide for maintaining and overhauling the Bobcat S590 loader. From foundational routine maintenance and fluid change intervals to complex hydraulic cylinder rebuilds, every chapter provides explicit diagnostic steps, factory-approved procedural workflows, and exact torque values to eliminate guesswork in the shop or field.

In-Depth Preventative Maintenance & Component Servicing

The Bobcat S590 Skid-Steer Loader Service Manual provides rigorous maintenance guidelines structured by operating hours. Technicians have access to complete procedures for draining and replenishing fluids, including engine crankcase lubrication meeting API CI-4 or ACEA E7 ratings, chaincase lubricants, and hydraulic system fluids ranging from Bobcat All-Season to specialized biodegradable formulas. Fuel system upkeep is thoroughly explained, highlighting fuel priming routines, water separator draining, and specific precautions necessary when operating on ultra-low sulfur diesel or B5/B7 biodiesel blends.

Hardware variations across production changes are addressed directly. The manual distinguishes between earlier cooling configurations with square expansion tanks and later configurations featuring rectangular tanks, detailing specific condenser unlatching and swing-out radiator access methods for thorough cleaning. Crucial daily safety systems—such as the Bobcat Interlock Control System (BICS), lift arm bypass valve, operator cab door sensors, and seat belt retractors—include full operational checkouts and adjustment criteria.

Hydraulic Diagnostics & Component Rebuilding

Hydraulic performance is vital on the Bobcat S590 Skid-Steer Loader, and this service manual provides deep technical instructions for isolating and correcting pressure loss or cycle-time faults. Step-by-step diagnostic workflows show how to isolate lift and tilt cylinders using pressure plugs to distinguish between internal piston seal blow-by and main spool leakage. Technicians are provided with complete tear-down and assembly specifications, such as torquing the lift cylinder piston retaining nut to 1152 N·m (850 ft-lb) or 780 N·m (575 ft-lb) on updated designs, tightening cylinder head glands to 373 N·m (275 ft-lb) or 550 N·m (405 ft-lb), and using specialized expander and compressor tools for seal installation without distortion.

Main system pressure calibration is clearly documented. Mechanics can verify primary relief valve cracking pressures at the front quick couplers using an in-line flow and pressure tester, adjusting the valve to factory specifications between 23787 and 24476 kPa (3450 to 3550 psi), or 24100 kPa (3500 psi) on B5N4 units. Accompanied by full hydraulic and hydrostatic schematics covering standard mechanical foot controls, advanced Selectable Joystick Controls (SJC), high-flow auxiliary circuits, and power attachment options, this manual serves as an indispensable shop guide.

Professional Shop Diagnostic Utility and Immediate Access

Utilizing the authentic Bobcat S590 Skid-Steer Loader Service Manual gives owner-operators, independent repair facilities, and equipment fleet managers the technical confidence to carry out repairs efficiently and accurately. Adhering to verified manufacturer assembly steps, bolt torque ratings, and system test parameters protects valuable machinery, prevents collateral hydraulic component failure, and ensures machine compliance with original factory performance benchmarks.

This service manual is delivered as an instant digital PDF download immediately upon completed order. You gain instant access with zero shipping wait times, allowing you to load the entire document onto shop laptops, field tablets, or mobile devices right at the machine. The PDF format allows you to navigate effortlessly through service chapters, zoom in on high-resolution hydraulic schematics, or print out clean mechanical procedure pages directly for bench work.