Case CX20B CX22B CX27B Hydraulic Excavator Shop Manual PDF – Service & Repair Guide

Description

Case CX20B CX22B CX27B Hydraulic Excavator Shop Manual

This is the full Case CX20B CX22B CX27B hydraulic excavator shop manual, supplied as a single PDF covering specifications, maintenance, systems, disassembly, troubleshooting and the complete Yanmar 3TNV82A-SYB engine service section. It is written for technicians, mechanics and equipment owners who need accurate procedures, real torque values and complete circuit diagrams for these compact excavators.

File Details

• Manual type: Shop Manual (Service & Repair)
• Brand / Model: Case CX20B, CX22B, CX27B Hydraulic Excavator
• Document number: 9-91841
• Language: English
• File format: PDF
• Page count: Approx. 766 pages
• Applicable machines: CX20B / CX22B (PM07-07001~) and CX27B (PV10-27001~)

Chapters Covered

• Specifications
• Maintenance
• System
• Disassembling
• Troubleshooting
• Engine
• Installation Procedures for Optional Attachment
• Supporting Data

Specifications

Machine dimensions, component names, dry weights, transportation data, crawler shoe and bucket types, engine performance curves and full attachment dimension tables for the boom, arm, bucket, dozer and swing bracket. Includes pin and bushing maintenance standards with tolerances and clearance limits for every attachment section.

Maintenance

Standard maintenance time tables and the complete maintenance standards & test procedures section. Includes engine speed measurement, hydraulic oil pressure measurement and adjustment, travel and slew performance checks, drain-rate tests, cylinder speed and gravity drift checks, slew bearing play and crawler tension measurement. Also covers torque specifications for capscrews, joints, hoses and sleeve-type tube fittings, plus special spanner references and counterweight lifting jig drawings.

System

Detailed coverage of the hydraulic system, electrical system and components system. Hydraulic sections describe circuit operation for neutral, travel, slew, bucket, boom, arm, swing, dozer and combined operations, plus the Nibbler & Breaker circuit. Electrical sections include how to read the circuit diagram, harness connections, electrical equipment lists and component & harness arrangement drawings for the upper frame, engine, relay unit, fuel tank, work lights, cab and heater. The components system covers the hydraulic pump, pilot valves, control valve, slewing motor, travel motor, swivel joint and cylinders with construction, function and service specifications.

Disassembling

General disassembly and assembly guidelines, then step-by-step removal and installation for attachments (bucket, arm, boom, swing, dozer and hydraulic cylinders), the upper slewing structure (canopy/cab, guards, floor plate, battery, counterweight, pump, control valve, solenoid valve, fuel tank, hydraulic oil tank, air cleaner, generator, muffler, control stand, starter, radiator, engine, pilot valve, slewing motor, swivel joint and upper frame) and the travel system (crawler, slide plate, upper roller, lower roller, front idler, idler adjuster, sprocket, travel motor and slewing bearing). Each section includes dismantling and reassembly of the internal components with inspection criteria and maintenance standards.

Troubleshooting

Troubleshooting chapters for the hydraulic system, electrical system and engine. Each chapter provides a diagnostic table and step-by-step flowcharts to isolate faults in attachment operation, travel, slewing, pump delivery and electrical circuits. The engine section cross-references starting trouble, rotation trouble, output drop, overheating, exhaust smoke and engine-stop solenoid issues against their likely causes and remedies.

Engine

The full Yanmar engine service section for the 3TNV82A-SYB. Covers general specifications, inspection and adjustment procedures, periodic maintenance schedule, troubleshooting, complete disassembly and reassembly, lubrication system, cooling system, fuel injection pump and governor, turbocharger service, starting motor, alternator, electric wiring, service standards and tightening torques for bolts and nuts.

Installation Procedures for Optional Attachment

Factory guidance for installing optional attachments beyond the standard configuration, referenced throughout the manual and detailed in the relevant system and disassembly sections.

Supporting Data

Colour hydraulic circuit diagrams and schematic piping for the full hydraulic system, covering standard specification, neutral circuit and each operating circuit including travel, slewing, bucket, boom, arm, swing, dozer, combined operations and Nibbler/Breaker. Also includes the complete electric circuit diagram with equipment codes and harness layout.

What This Case CX20B CX22B CX27B Shop Manual Lets You Do

With this manual on hand you can carry out the full range of service and repair work on the CX20B, CX22B and CX27B compact excavators — from routine maintenance and pressure testing through to full component overhaul. The specifications chapter gives you the exact tolerances, pin and bushing clearances and service limits you need to judge whether a part is reusable or must be replaced. The disassembly chapters walk through each attachment, upper structure component and travel system item so you can remove, strip, inspect and reassemble with confidence. The troubleshooting flowcharts save diagnostic time by taking you straight to the likely cause instead of guessing at hydraulic or electrical faults.

Because the engine section covers the Yanmar 3TNV82A-SYB in complete detail, you also get valve clearance settings, fuel injection timing, compression pressure limits, tightening torques and step-by-step engine disassembly and reassembly in the same document. The supporting data chapter gives you the hydraulic and electrical circuit diagrams you need to trace circuits accurately rather than relying on memory.

IMAGES PREVIEW

Delivered as an instant PDF download with no shipping and no waiting, this Case CX20B CX22B CX27B shop manual can be viewed on any device, searched on screen, or printed page by page for use in the workshop. Keep it on a laptop, tablet or phone and have the correct procedures and specifications on hand for every job on these machines.