Cat 420

Current-generation Cat 420 backhoe loader (C3.6 engine, Tier 4 Final / Stage V, North American specalog AEHQ8243-04, 2026); Al-Bahar (UAE) lists no 420 or 424 (its range is 426, 426F2, 428, 432, 434, 444), so the North American sheet is used.

UAEUSAGlobal

dig depth: 4.278 m
power: 68 kW (91 hp)
Operating weight: 7,834 kg
Shovel capacity: 0.96 m³

Side

Front

Overall length (loader on ground): 7.132 m
Total travel height: 3.645 m
Cab roof height: 2.815 m
Height to top of exhaust stack: 2.72 m
Rear axle centreline to front grille: 2.706 m
Wheelbase: 2.2 m
Stabiliser spread, operating (centre): 3.31 m

Dimensions

Total travel length: 7.163 m
Overall width: 2.248 m
Rear frame width: 2.322 m
Shovel width (GP shovel): 2.262 m
Height to loader hinge pin (transport): 0.378 m
Ground clearance (LH step): 0.316 m
Ground clearance (AWD guard): 0.312 m
Ground clearance (485 kg counterweight): 0.289 m
Front wheel tread gauge: 1.895 m
Rear wheel tread gauge: 1.728 m
Stabiliser spread, operating (outside): 3.77 m
Turning circle, outside front wheels (Inner wheel not braked): 8.205 m
Turning circle, outside widest loader bucket (Inner wheel not braked): 10.745 m

Backhoe performance

14Max dig depth (SAE maximum, standard stick): 4.278 m
Max dig depth (E-stick extended) (SAE maximum, extendible stick extended): 5.372 m
15Digging depth, 2440 mm flat bottom: 3.9 m
Digging depth, 610 mm flat bottom: 4.24 m
16Reach at ground level, from slew centre: 5.6 m
Reach at ground level, from slew centre (E-stick extended): 6.641 m
Reach from rear axle centreline at ground line: 6.69 m
Max load-over height (Loading height, standard stick): 3.709 m
17Loading reach: 1.845 m
Maximum operating height (backhoe): 5.598 m
Bucket tearout force: 64 kN
Dipper tearout force: 44 kN
Swing arc: 180°
Bucket rotation: 205°

Loader performance

Shovel capacity (GP bucket, SAE rated, pin-on): 0.96 m³
Lift capacity to full height: 3,280 kg
Shovel breakout force: 50 kN
Lift breakout force: 50 kN
Tipping load at breakout point: 6,663 kg
Dump height: 2.758 m
7Maximum hinge pin height: 3.488 m
8Dump angle at full height: 44°
9Dump reach at maximum angle: 0.807 m
10Maximum bucket rollback at ground level: 36°
11Loader digging depth: 0.07 m
12Grille to bucket cutting edge, carry position: 1.48 m
13Maximum operating height (loader): 4.356 m

Weight

Operating weight: 7,834 kg
Operating weight (maximum, ROPS capacity): 11,000 kg
Operating weight (minimum): 7,384 kg

Engine

Engine model: Cat C3.6, electronic turbo, intercooled
Emissions: U.S. EPA Tier 4 Final / EU Stage V
Displacement: 3.6 L
Bore: 98 mm
Stroke: 120 mm
Gross power: 76 kW (102 hp)
Gross power (ISO 14396) (At 2,200 rpm; 74.5 kW (100 hp) engine rating): 74 kW (100 hp)
Net power: 68 kW (91 hp)
Net peak power: 78 kW (105 hp)
Max torque: 436 Nm
Gross power, 110 hp rating: 84 kW (112 hp)
Net power, 110 hp rating: 76 kW (101 hp)
Max torque, 110 hp rating (Net, SAE J1349; 82 kW (110 hp) engine rating): 485 Nm

Transmission

Transmission: Power shift 4F/3R (standard); 6F/3R power shift optional, with or without LTC
Top speed: 41 km/h

Hydraulics

Hydraulic system: Closed center, load sensing; variable-flow axial piston pump
Pump flow (At 2,200 rpm): 187 L/min
Max pressure: 250 bar

Tyres

Front tyres: 340/80-18
Rear tyres: 500/70-24

Service capacities

Fuel tank: 160 L
Engine oil, with filter: 9 L
Cooling system (With air conditioning): 18 L
Diesel exhaust fluid (DEF): 19 L
Hydraulic system, with tank: 95 L
Hydraulic tank: 42 L
Transmission, power shift (AWD): 19 L
Rear axle: 16 L
Front axle (AWD): 11 L
Final drive, front (each): 0.7 L
Final drive, rear (each): 1.7 L

Service intervals

Engine oil and filter (or 12 months): 500 hours
Transmission oil: 1,000 hours
Axle oil: 1,000 hours
Hydraulic oil (With Cat HYDO Advanced 10): 3,000 hours
Coolant (Cat ELC, or 72 months): 12,000 hours