300 SERIES JOHN DEERE ENGINES (4219 & 4239) Caterpillar

Fig. 1-Pulley Nut

Pully nut torque ... 40 to 60 lb-ft(54 to 81 Nm) (6 to 8 kg-m)

Rotor winding current draw ... 4 to 4.5 amps at 12 volts

Alternator output at 5000 rpm:

Motorola

Fig. 2-Alternator Brush Length

Brush exposed length (minimum) ... 0.25 inch(6.5 mm)

Alternator output (35 amp):

without regulator (3000 rpm, 77°F (25°C) ... 26 amps at 14.0 volts

with regulator (1180 rpm, 800 engine rpm, 77°F (25°C) (minimum) ... 5 amps at 13 to 15 volts

with regulator (3000 rpm 2040 engine rpm, 77°F (25°C) minimum ... 26 amps at 13 to 15 volts

Alternator output (55 amp):

at 1660 rpm (75°F (25°C) (minimum) ... 23 amps at 13 to 15 volts

at 3000 rpm (75°F (25°C) (minimum) ... 45 amps at 13 to 15 volts

Fig. 3-Alternator Screw Torque

(1) - Through bolt torque ... 50 to 60 lb-in.(5.6 to 6.8 Nm) (0.6 to 0.7 kg-m)

(2) - Brush assembly screw torque ... 20 to 30 lb-in.(2.3 to 3.4 Nm) (0.2 to 0.4 kg-m)

Fig. 4-Pulley Nut

Pulley Nut Torque ... 40 to 50 lb-ft(54 to 68 Nm) (6 to 7 kg-m)