Case 21D, 121D, 221D, 321D Wheel Loader Service Manual (9-93150)

CASE 21D / 121D / 221D / 321D Technical Handbook – 9-93150

This professional technical handbook provides in-depth mechanical, hydraulic, and axle-specific procedures for servicing CASE 21D, 121D, 221D, and 321D compact loaders. Designed for experienced technicians, it covers both front and rear axle configurations, detailed component disassembly, failure diagnostics, and specifications. The content is organized bilingually (English / Italian) and adheres to CASE technical standards for axle repair and drivetrain servicing.

Model Covers:

CASE 21D / 121D / 221D / 321D Compact Loaders

File Format: PDF

Size: 64.35 MB

No. of pages: 860

Language: English / Italian

Publication: 9-93150

Delivery Method: Instant Download – Access your file immediately after purchase.

📑 Included Sections:

General Information

• Manual structure, information access rights, terminology, and definitions
• Technical documentation usage recommendations and document conventions

Safety Instructions

• Hazard identification symbols, technician safety practices, and personal protective equipment (PPE) requirements

General Specifications

• Machine usage intent, product identification plates, and configuration data
• Complete technical specifications: dimensions, capacities, and operating parameters
• Oil change procedures, lubrication schedules, and torque tightening charts

Disassembly and Assembly Operations

• Brake disk group removal, inspection, and component tolerance checks
• Epicyclic planetary gear reduction stages: disassembly and reassembly procedures
• Wheel hub service procedures and bearing preload specifications
• Differential groups, support assemblies, pinion and crown inspection steps
• Rear and front axle-specific assembly notes and post-repair testing routines

Hydraulic and Transmission Subsystems

• Hydraulic motor group inspection and flow control verification
• Transmission box diagnostics, housing service, and shaft alignment checks
• Hydraulic-assisted brake group components and calibration of internal clearances

Troubleshooting

• Fault code interpretation (if applicable), visual and functional diagnostics
• Axle-related noise, vibration, and mechanical failure root cause isolation

Special Tools

• Dedicated CASE service tools for axle disassembly and torque application
• Tool illustrations and usage notes per assembly group

Note: DIESEL ENGINE (NOT INCLUDED: Please contact the service of the company DEUTZ)

This CASE 21D / 121D / 221D / 321D Technical Handbook is an indispensable reference for certified mechanics and workshop technicians performing professional maintenance, component overhaul, and diagnostics of compact loader axles and drivetrain components.