Case 621G Wheel Loader - Specs, Parts & Serial Number Guide

Description:

Serial Number Location

For identifying production year and ensuring parts compatibility on your Case 621G Wheel Loader, locate the serial number in one of the following areas:

• Frame Location: Stamped on the left frame rail near the front axle

• Cab Location: On the data plate inside the operator’s cab, typically behind the seat or near the fuse panel

Serial numbers are required for ordering parts related to emissions systems, electronics, hydraulics, and engine configurations.

Key Specifications

Key Features

• ✅ Tier 4 Final Engine Compliance – Efficient emissions system with SCR and DEF that maintains power

• ✅ 221 L/min Hydraulic Flow – Allows rapid lifting, tilting, and loading with low lag

• ✅ Modern Cab Comfort – Climate-controlled, ergonomic layout with adjustable seat and noise reduction

• ✅ Telematics & Automation – Includes Case SiteWatch, payload monitoring, and optional return-to-dig & auto-shutdown features

• ✅ Enhanced Visibility & Control – LED lighting, rear-view camera, and 8” digital display interface

Maintenance & Common Issues

 Routine Maintenance

• Engine Oil, DEF Fluid & Filters – Service every 250 hours

• Hydraulic System Maintenance – Change filters every 500 hours

• Emission Components – DEF levels and SCR diagnostics weekly

• Cab Air Filter & Display System Check – Monthly or as needed

• Greasing Loader Pins – Daily under high-use conditions

⚠️ Common Issues & Fixes

• DEF System Warnings – Clean DEF injector, check fluid quality, or recalibrate SCR sensor – DEF components available

• Electronic Control Faults – Inspect CANBUS connections and update firmware

• Slow Bucket Response – Replace hydraulic filter or recalibrate joystick controls

• Cab Display Malfunctions – Software resets or screen harness replacement