CASE 21F, 121F, 221F, 321F Tier 4A (interim) Compact Wheel Loader Service Manual (47829079C NA)

CASE 21F, 121F, 221F, 321F Tier 4A (Interim) Compact Wheel Loader Service Manual – 47829079C (NA)

This comprehensive factory service manual provides detailed diagnostic, disassembly, and repair procedures for CASE 21F, 121F, 221F, and 321F compact wheel loaders with Tier 4A (Interim) emissions systems. It includes full hydraulic and hydrostatic system documentation, axle and drivetrain repair instructions, advanced electrical schematics, and is tailored for trained technicians servicing XT, ZB, STD, and HS configurations.

Model Covers:

121F XT, 121F ZB, 21F XT, 21F ZB, 221F HS, 221F STD, 321F HS, 321F STD

North America

File Format: PDF

Size: 89.31 MB

No. of pages: 1,617

Language: English

Publication: 47829079C (1st Edition, April 2017)

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

📑 Included Sections:

Engine

• Complete engine and crankcase teardown and rebuild instructions
• Fuel tank system layout and access procedures
• Emission components servicing compliant with Tier 4A (Interim) regulations

4WD & Drive Shaft

• Drive shaft inspection, universal joint replacement, alignment checks
• Connection to front and rear axles and torque specs

Axles and Final Drives

• Powered front/rear axle diagnostics and internal component breakdown
• Bevel gear set backlash adjustments and differential overhaul
• Planetary assemblies, final drives, hubs, steering knuckles and shafts

Hydrostatic Drive

• Transmission and steering hydrostatic control system architecture
• Hydraulic motor-pump unit diagnostics and pressure adjustments

Brakes and Controls

• Hydraulic brake actuation system, master valve control, and modulation
• Parking brake locking mechanism and diagnostics
• Front axle integrated brake assembly inspection

Hydraulic Systems

• System architecture, reservoir and filtration layout, pressure line routing
• Fixed and variable displacement pumps: removal, specs, and testing
• Main control valve and pilot system logic, high-flow auxiliary configuration
• Loader arm, bucket, coupler, and travel system hydraulics
• Hydraulic hand controls and optional joystick integration

Frames and Ballasting

• Main frame inspection, ballast placement, and structural reinforcement zones

Steering

• Steering orbital valve, hydraulic control components, and cylinder servicing
• Flow logic and turning radius adjustment procedures

Cab Climate Control

• Cab heating and A/C system layout, refrigerant cycle servicing
• HVAC electronic controls and diagnostic checks

Electrical Systems

• Wiring harness layouts, connectors, and electrical routing diagrams
• Front axle control electronics, HVAC integration, alarms, and indicators
• Full DTC index and fault resolution flowcharts

Front Loader and Bucket

• Loader arm inspection, linkage pivot clearance, and cylinder rebuild
• Bucket geometry and alignment, pin and bushing replacement

Cab and Bodywork

• Cab removal, mount inspections, door and panel replacement
• Decal application zones and safety label positioning

📑 What's New in the Updated Edition:

• New section on hydrostatic drive control: [29.100] Transmission and steering hydrostatic control
• Expanded HVAC logic and diagnostics: [50.100], [50.200], [55.050]
• New auxiliary hydraulic circuits: [35.525] Auxiliary valves and lines
• Hydraulic hand control diagnostics: [35.355]
• Bucket system breakdown added: [82.300]
See the previous edition

This CASE 21F / 121F / 221F / 321F Tier 4A Interim Service Manual is designed for certified workshop technicians performing maintenance and overhauls on North American market compact wheel loaders equipped with FPT F5HFL463 engines.