Caterpillar 257B Series 3
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Contents:
Dimensions
| Width Over Tracks | 5.5 ft in (1676 mm) |
| Height To Top Of Cab | 6.68 ft in (2035 mm) |
| Ground Clearance | 10 in (254 mm) |
| Clearance At Max Lift And Dump | 7.58 ft in (2309 mm) |
| Reach At Max Lift And Dump | 2.49 ft in (758 mm) |
| Length - Track On Ground | 59 in (1498.6 mm) |
| Length - With Bucket On Ground | 135 in (3429 mm) |
| Length - Without Bucket | 107 in (2717.8 mm) |
| Length With Out Bucket | 8.92 ft in (2718 mm) |
| Bucket Pin Height - Maximum Lift | 10.09 ft in (0.26 m) |
| Clearance At Maximum Lift And Dump | 91 in (2311.4 mm) |
| Departure Angle | 37 degrees |
| Height - Top Of Cab | 6.67 ft in (0.17 m) |
| Turning Radius From Center - Inc Bucket | 86.3 in (2192 mm) |
| Turning Radius From Center - Machine Rear | 57.13 in (1451 mm) |
| Vehicle Width | 66 in (1676.4 mm) |
| Length With Bucket | 11.29 ft in (3439 mm) |
| Bucket Pin Height - Carry Position | 8 in (203.2 mm) |
| Maximum Dump Angle | 50 degrees |
| Maximum Overall Height | 153 in (3886.2 mm) |
| Maximum Reach - With Arms Parallel | 53 in (1346.2 mm) |
| Overall Length - Track | 75 in (1905 mm) |
| Rack Back Angle - Maximum Height | 87 degrees |
| Reach At Maximum Lift/Dump | 30 in (762 mm) |
| Turn Radius From Center - Bucket | 86 in (2184.4 mm) |
| Turn Radius From Center - Coupler | 56 in (1422.4 mm) |
| Turn Radius From Center - Rear | 57 in (1447.8 mm) |
Undercarriage
| Length Of Track On Ground | 4.92 ft in (1499 mm) |
| Ground Contact Area | 1770 in2 (1.15 m2) |
| Ground Pressure | 4.5 psi (31.03 kPa) |
Engine
| Engine Make | 2236 |
| Engine Model | C3.4 DIT |
| Gross Power | 74 hp (55.2 kw) |
| Net Power | 71 hp (53 kw) |
| Displacement | 201 cu in (3.3 L) |
| Bore | 3.7 in (94 mm) |
| Stroke | 4.7 in (119.4 mm) |
| Gross Power - Sae J1995 | 74 hp (55.2 kw) |
| Engine Model | Cat C3.4 DIT |
| Net Power - Iso 9249 Eec | 71 hp (53 kw) |
| Net Power - Sae 1349 | 71 hp (53 kw) |
Operational
| Operating Weight | 8060.1 lb (3656 kg) |
| Cooling System Fluid Capacity | 2.7 gal (10 L) |
| Engine Oil Capacity | 2.4 gal (9 L) |
| Fuel Capacity | 22.2 gal (84 L) |
| Hydraulic System Fluid Capacity | 14.6 gal (55 L) |
| Operating Voltage | 12 V |
| Alternator Supplied Amperage | 90 amps |
| Max Speed - Low Range | 6.9 mph (11.2 km/h) |
| Max Speed - High Range | 10 mph (16.1 km/h) |
Power Train
| Travel Speed Forward | 6.9 mph (11.2 km/h) |
| Travel Speed Reverse | 6.9 mph (11.2 km/h) |
| Travel Speed Reverse - 2-Speed Option | 10 mph (16.1 km/h) |
| Travel Speed Forward - 2-Speed Option | 10 mph (16.1 km/h) |
Loader
| Breakout Force | 4508.5 lb (2045 kg) |
| Operating Load | 2674.3 lb (1213 kg) |
| Tipping Angle | 5350.7 degrees |
Weights
| Operating Weight | 8060 lb (3656 kg) |
Hydraulic
| Pump Flow | 22 gal/min (83 L/min) |
| Relief Valve Pressure | 3335 psi (22994 kPa) |
Hydraulic System
| Hydraulic Flow (1) | Standard |
| Hydraulic Power | 42.8 hp (32 kw) |
| Loader Hydraulic Pressure | 3335 psi |
| Hydraulic Flow (2) | High Flow |
| Hydraulic Power - Calculated | 60.3 hp (45 kw) |
| Loader Hydraulic Flow (1) | 22 gal/min |
| Loader Hydraulic Flow (2) | 31 gal/min |
Operating Specifications
| Rated Operating Capacities - 50% Tipping Load | 2675 lb (1213.4 kg) |
| Rated Operating Capacities - 35% Tipping Load | 1870 lb (848.3 kg) |
| Ground Contact Area | 1770 in2 (1.2 m2) |
| Ground Pressure | 4.5 psi |
| Tipping Load | 5350 lb (2426.8 kg) |
| Breakout Force - Tilt Cylinder | 4508 lb (2044.8 kg) |
Service Refill Capacities
| Cooling System | 2.6 gal (9.9 L) |
| Fuel Tank | 22.2 gal (84.1 L) |
| Hydraulic Tank | 9.2 gal (34.9 L) |
| Engine Crankcase | 2.4 gal (9.1 L) |
| Hydraulic System | 14.5 gal (54.9 L) |
Cab
| Rops | SAE J1040 MAY94, ISO 3471:1994 |
| Fops | SAE J1043 SEPT87, ISO 3449:1992 Level I |
| Fops Level Ii | SAE J231 JAN81, ISO 3449:1992 Level II |
