Case 21E, 121E, 221E, 321E Series 3 Tier 3 Compact Wheel Loaders Service Manual (87734636A)

Case 21E, 121E, 221E, 321E Series 3 Tier 3 Compact Wheel Loaders Service Manual (87734636A NA)

This updated Tier 3 edition of the Case service manual offers full maintenance coverage for the 21E, 121E, 221E, and 321E compact wheel loaders. Enhanced with optimized schematics and system diagnostics, the manual supports advanced servicing across engine systems, hydraulics, cab functions, and electrical subsystems.

Model Covers:

Case 21E, 121E, 221E, 321E Series 3 Tier 3
Compact Wheel Loaders

File Format: PDF

Size: 31.25 MB

No. of pages: 488
Language: English

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

📑 Table of Contents Overview:

Engine and Powertrain Systems

• Tier 3 compliant engine servicing
• Front/rear axle diagnostics and rebuild procedures
• Improved brake and hydraulic calibration

Operator Cab and Comfort Systems

• New HVAC servicing layout
• Refined steering and frame integrity inspections
• Electrical system wiring improvements

Attachments and Advanced Schematics

• Enhanced diagrams for loader arms and hydraulics
• Updated controls for working equipment
• Electrical troubleshooting guides

The complete Repair Manual consists of two volumes:

• 21E - 121E - 221E - 321E Repair Manual for “Wheel loaders” - 87734636A
• 21E - 121E - 221E - 321E Repair Manual for “Engine” -  87736548A

What's New in the Updated Edition:

• Streamlined HVAC and electrical section for faster diagnostics
• Reorganized system schematics with better clarity
• Consistent Tier 3 engine calibration protocols
• Updated attachment maintenance insights and layout improvements [See the previous edition]

The Case 21E, 121E, 221E, 321E Tier 3 Service Manual delivers enhanced accuracy and is vital for keeping your compact wheel loaders in peak operational condition.