CASE 521G Tier 4B (Final) Wheel Loader Service Manual (48083735)

Complete OEM service manual for CASE 521G Tier 4B Final Wheel Loaders, covering all North American variants with new cab design and full emissions integration. Includes diagnostics and repair for SCR and EGR systems, CAN-bus electronics, hydraulic pilot control, powershift transmission, camera wiring, and loader functionality.

Model Covers:

CASE 521G ZBAR-EH Tier 4B Final Wheel Loader (New Cab - NA)
CASE 521G XT-EH Tier 4B Final Wheel Loader (New Cab - NA)
CASE 521G XR-EH Tier 4B Final Wheel Loader (New Cab - NA)

Note: This service manual provides complete guidance for Tier 4B Final CASE 521G wheel loaders using standard SCR and EGR aftertreatment systems. It includes detailed diagnostics, hydraulic service, electrical schematics, drivetrain calibration, and emissions servicing. This manual is optimal for models without full EH control systems or CAN-based cab integrations.

If your machine features XR, XT, or Z-BAR EH configurations with advanced HVAC, camera logic, pilot hydraulics, and updated electronic controls, refer to the expanded
👉 CASE 521G Tier 4B Final Manual 51428262.

For mechanical-only loaders without emission modules or SCR logic, see
👉 Tier 2 Manual 48083739.

To locate exact CASE part numbers and exploded views for loader arms, hydraulics, engine, or cab components, use the
👉 521G Tier 4B Parts Catalog.

If your model is a European Stage IV version with region-specific emissions logic and diagnostics, consult:

• Stage IV Manual 51428203
• Stage IV Manual 48082189

File Format: PDF

Size: 93.15 MB

No. of pages: 2609

Language: English

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

📑 Table of Contents Overview:

Engine & Emissions

• Engine block, crankcase, cooling, fan drive, SCR and EGR systems
• Fuel tanks, air intake, aftercooler, engine lubrication

Transmission & 4WD

• Powershift transmission: internal & external controls
• Driveshafts, front and rear axles, bevel gears, planetary hubs

Brakes & Steering

• Hydraulic service brake, parking brake, auxiliary steering
• Steering cylinders, hydraulic control components

Hydraulic Systems

• Pilot control system, loader arm and bucket hydraulics
• Hydraulic fan drive, quick coupler, filters and reservoir

Cab & Operator Station

• Cab ROPS/FOPS structure, seat systems, HVAC controls
• Camera integration, climate diagnostics, machine guards

Electrical & Diagnostics

• Harnesses, connectors, alternator, starter, camera wiring
• SCR and EGR electrical control systems, DTC maps

Mounted Equipment

• Loader arms and bucket assembly
• Machine shields, decals and platform elements

Schematics

• Electrical schematic
• Hydraulic schematic

This CASE 521G Tier 4B Final Service Manual is your go-to reference for emissions-compliant North American machines with advanced drivetrain, hydraulic, and electrical subsystems.