ELBOW-AIR 2849563 - Caterpillar

12 Volt Starting Motor
Illustration 1 g00295928
Starting Motor (Side View)
Illustration 2 g00295930
End view of the starting motor which shows the electrical connections
No load conditions at 25 °C (77 °F) Rpm of shaft ... 7000 minimumCurrent draw ... 130 amperes maximumVoltage ... 11.5 voltsRated voltage ... 12 volts (1) Tighten the battery terminal nut to the following torque: ... 24 to 32 N m (18 to 24 lb ft) (2) Tighten the nut for the switch terminal to the following torque: ... 1.0 to 1.3 N m (9 to 12 lb in)Tension of the spring for the motor brush ... 8.34 to 11.00 N (1.9 to 2.5 lb)Minimum resistance of the starter cable at 200 °C (392 °F) and at 12 volts ... 0.0017 ohmsStart Relays
9G-4368 Relay
Illustration 3 g00731492Voltage ... 12 VDCResistance between "W1" terminal and "W2" terminal ... 15 1.5 ohms069-5466 Relay
Illustration 4 g00295932Voltage ... 6 VDCResistance between terminal "A" and terminal "B" ... 30 to 34 ohms24 Volt Starting Motor
No load conditions at 25 °C (77 °F) Rpm of shaft ... 7000 minimumCurrent draw ... 85 amperes maximumVoltage ... 23 voltsRated voltage ... 24 voltsMinimum pull-in voltage ... 18 voltsBrush length: Minimum brush length ... 15.5 mm (0.61 inch)Armature end play ... 0.1 to 0.3 mm (0.004 to 0.012 inch)Install shims or remove shims in order to adjust the armature end play to the correct specification.Commutator New diameter ... 45 mm (1.77 inch)Minimum diameter ... 42.5 mm (1.67 inch)