John Deere 624J Wheel Loader

Description:

The John Deere 624J Wheel Loader is a heavy-duty, high-performance machine designed to meet the rigorous demands of construction, quarry, and material handling operations. As part of the J-Series, the 624J combines advanced electrohydraulic controls, a comfortable cab with excellent visibility, and a powerful Tier 2 engine. Its Z-bar loader linkage, strong breakout force, and smooth-shifting powershift transmission make it a favorite for contractors needing reliable daily productivity.

Key Specifications:

• Engine: John Deere 6068H, 6-cylinder, 6.8L turbocharged Tier 2 diesel

• Net Power: 180 hp (134 kW)

• Transmission: John Deere 4-speed automatic powershift with torque converter

• Hydraulic System: Load-sensing, open center with axial piston pump – 41 GPM @ 3,200 psi

• Operating Weight: 34,500 lbs

• Breakout Force: 28,800+ lbf

• Lift Capacity: ~17,000 lbs

• Travel Speed: Up to 23 mph

• Bucket Capacity: 3.5–4.25 cu. yd

Maintenance & Common Parts:

• Maintenance schedule includes engine oil/filter changes, cooling system service, hydraulic filter changes, and powershift transmission flush.

• Frequently replaced parts: Loader cylinder seal kits, powershift solenoids, transmission clutch packs, brake valves and calipers, pins and bushings.

• Common issue: Harsh shifting or failure to engage gear – often linked to worn solenoids or low transmission pressure.

Pro Tips:

• Ensure your machine's TCM (Transmission Control Module) software is up to date to prevent gear hunting.

• Grease loader arm pivot points daily in high-load environments to avoid costly downtime.

Serial Number Info:
The serial number plate is located on the left side of the loader frame near the articulation joint. Always verify your serial number when ordering drivetrain or hydraulic components—variation exists between early and late 624J models.