Caterpillar 257B3 Track Loader Maintenance Data

The Caterpillar 257B3 multi-terrain loader is powered by 207.5 cu.in (3.4L) Cat C3.4 DIT 4-cylinder turbocharged diesel engine with a rated power of 100 hp (74.6 kW). The Cat 257B3 is equipped with a two-speed hydrostatic transmission, vertical-lift loader boom, single level suspension undercarriage, and 12.6" (320 mm) durable rubber tracks. The hydraulic system has a pump with fluid flow rate of 22 gpm (83 lpm) or 31 gpm (117 lpm). The hydraulic pressure is 3335psi (230 bar). The loader has a rated operating capacity of 1870 lbs (848 kg) and tipping load of 5350 lbs (2426 kg). The lift height is 120.9" (3070 mm) to hinge pin, and dump height is 91" (2310 mm).

Refill Capacities

Engine Oil Capacity, gal (L) .................... 2.4 (9.0)
Engine Coolant Capacity, gal (L) .................... 2.65 (10.0)
Hydraulic Tank Fluid Capacity, gal (L) .................... 9.2 (35.0)
Hydraulic System Fluid Capacity, gal (L) .................... 14.5 (55.0)
Final Drive Oil Capacity, qts (L) .................... 1.1 (1.0)

Recommended Oil and Fluid

Engine Oil Type .................... Cat DEO-ULS, SAE 10W-30, 15W-40. API Service CE, CF-4, CG-4
Engine Coolant Type .................... Caterpillar Diesel Engine Antifreeze/Coolant
Hydraulic Fluid Type .................... Cat HYDO Advanced, SAE 30, SAE 10W, Cat TDTO-TMS Multi-Grade
Final Drive Oil Type .................... Cat Synthetic GO, SAE 75W-90 or 75W-140 Gear Oil, API Service GL-5

Service Intervals

Lubricate Cylinder Pivot Points .................... Every 50 Hours
Check and Adjust Track Tension .................... Every 100 Hours
Check and Adjust Alternator/Fan Belt .................... Every 250 Hours
Check Final Drive Oil Level .................... Every 250 Hours
Clean Primary Engine Air Filter .................... Every 250 Hours
Clean Cab Air Filters .................... Every 250 Hours
Change Engine Oil .................... Every 500 Hours
Replace Engine Oil Filter .................... Every 500 Hours
Replace Primary Fuel Filter .................... Every 500 Hours
Replace Final Fuel Filter .................... Every 500 Hours
Replace Primary Engine Air Filter .................... Every 500 Hours
Replace Secondary Engine Air Filter .................... Every 500 Hours
Replace Hydraulic Tank Breather .................... Every 500 Hours
Change Final Drive Oil .................... Every 500 Hours
Change Hydraulic Fluid .................... Every 1000 Hours
Replace Hydraulic Oil Filter .................... Every 1000 Hours
Replace Alternator/Fan Belt .................... Every 1000 Hours
Replace Cab Air Filters .................... Every 1000 Hours
Service And Refill Cooling System .................... Every 2000 Hours

Replacement Parts

Engine Oil Filter. Part Number .................... 267-2528
Engine Fuel Filter. Part Number .................... 233-9856, 361-9555
Primary Engine Air Filter. Part Number .................... 110-6326
Secondary Engine Air Filter. Part Number .................... 110-6331
Cab Air Filter. Part Number .................... 231-8132, 303-6658
Hydraulic Oil Tank Breather. Part Number .................... 207-9729
Hydraulic Oil Filter. Part Number .................... 1G-8878
Alternator/Fan Belt. Part Number .................... 529-7680

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BOBCAT SKID STEER AND COMPACT TRACK LOADERS

S100