Description:
Serial Number Information
Use the serial number plate (typically located on the frame near the cab step or front axle housing) to identify your production year:
Year |
Starting Serial Number |
2001 |
200001 |
2002 |
200311 |
2003 |
201811 |
2004 |
599286 |
2005 |
608490 |
2006 |
626763 |
2007 |
642001 |
2008 |
650000 |
2009 |
660000 |
2010 |
670000 |
2011 |
680000 |
Key Specifications
Feature |
Specification |
Engine |
Mercedes-Benz OM501LA, 12.0L V6 turbo diesel |
Net Power |
413 HP (308 kW) @ 1,800 rpm |
Max Torque |
1,454 lb-ft (1,974 Nm) @ 1,080 rpm |
Transmission |
Allison 4500R ORS fully automatic |
Gears |
6 forward / 1 reverse |
Operating Weight |
65,960 lbs (29,920 kg) |
Max Speed |
32 mph (52 km/h) |
Tire Size |
29.5R25 |
Capacity & Dumping Specs
Feature |
Specification |
Payload Capacity |
81,570 lbs (37,000 kg) |
Heaped Capacity |
29.3 yd³ (22.4 m³) |
Fuel Tank |
128 gallons (485 L) |
Hydraulic Fluid Capacity |
47 gallons (178 L) |
Dump Height |
23.75 ft (7,240 mm) |
Dump Angle |
70 degrees |
Dimensions
Measurement |
Value |
Overall Length |
34.58 ft (10,540 mm) |
Overall Width |
12.5 ft (3,810 mm) |
Overall Height |
12.77 ft (3,890 mm) |
Wheelbase |
17.89 ft (5,450 mm) |
Ground Clearance |
1.84 ft (560 mm) |
Turning Radius |
Approx. 32 ft |
Key Features
Heavy-Duty Mercedes Power
The OM501LA turbo diesel engine provides 413 HP and nearly 1,500 lb-ft of torque—perfect for hauling full loads over rough terrain.
High-Capacity Payload System
With a 29.3 cubic yard heaped bed and 81,570 lb payload rating, the 400D handles large volumes with fewer trips.
Smooth Automatic Transmission
Allison 4500R ORS transmission offers seamless gear changes, boosting operator comfort and drivetrain longevity.
Built for Tough Conditions
Features like high ground clearance, heavy-duty suspension, and massive 29.5R25 tires ensure reliability in the harshest jobsite environments.
Common Replacement Parts
Maintain your JD 400D with key components available at Broken Tractor:
Engine & Cooling
Turbochargers, intercoolers, air filters, radiators, oil coolers
Transmission & Drivetrain
Allison transmission sensors, solenoids, clutch packs, torque converters
Hydraulic System
Dump bed cylinders, hydraulic control valves, pumps, filters
Axles & Suspension
Differentials, hub seals, axle bearings, brake chambers, control arms
Cab & Electrical
Instrument clusters, ignition switches, seat assemblies, lighting kits
Maintenance Schedule
Task |
Recommended Interval |
Engine Oil & Filter |
Every 250 hours |
Transmission Fluid & Filter |
Every 500 hours |
Fuel Filters |
Every 250 hours |
Hydraulic System Service |
Every 500 hours |
Brake & Axle Inspection |
Weekly or after heavy hauling |
Coolant System Flush |
Every 1,000 hours or annually |