CAP-PROTECTION 7M7644 - Caterpillar

12 Volt
Illustration 1 g00719179
Illustration 2 g00719193
Rated Voltage ... 12 voltsSolenoid resistance Pull-in winding ... 0.24 0.01 ohms Hold-in winding ... 1.05 0.05 ohmsMinimum engaged solenoid voltage Pull-in winding ... 5 volts Hold-in winding ... 8 voltsNo load test Minimum voltage ... 10.5 volts Minimum speed ... 7800 rpm Maximum current draw ... 170 ampLoad test Minimum voltage ... 9.2 volts Minimum speed ... 1600 rpm Maximum current draw ... 1000 amp Maximum torque ... 24 N m (18 lb ft) (1) Put 9S-3263 Thread Lock Compound on the threads of the solenoid mounting screws. Torque for the screws ... 4.6 to 6.0 N m (41 to 53 lb in) (2) Torque for M10 terminal nuts ... 28 4 N m (21 3 lb ft) (3) Torque for M4 terminal nut ... 1.0 to 1.3 N m (8.8 to 11.5 lb in) (4) Required pressure for the brush spring New ... 46 N (10.3 lb) Minimum ... 26 N (5.8 lb) (5) Brush length New length ... 15.5 mm (0.61 inch) Minimum length ... 8.5 mm (0.33 inch) (6) Armature end play ... 0.05 to 0.40 mm (0.002 to 0.016 inch) (7) Put 9S-3263 Thread Lock Compound on the threads of the center cover screws. Torque for the screws ... 3.2 to 4.0 N m (28 to 35 lb in) (8) Armature total indicator runout (TIR) Commutator ... 0.03 mm (0.001 inch) Laminated core ... 0.10 mm (0.004 inch) (9) Put 9S-3263 Thread Lock Compound on the threads of the field winding screws. Torque for the screws ... 37 to 53 N m (27 to 39 lb ft) (10) Commutator New diameter ... 45 mm (1.77 inch) Minimum diameter ... 42.5 mm (1.67 inch) Minimum depth of insulation between commutator bars ... 0.8 mm (0.03 inch) (11) Put 9S-3263 Thread Lock Compound on the threads of the starting motor through bolts. Torque for the end cover nuts ... 9.1 to 12.2 N m (80.5 to 108 lb in)Put 9S-3263 Thread Lock Compound on the threads of the shift lever screw. Torque for the shift lever nut (not shown) ... 9 to 11 N m (80 to 97 lb in)Starting motor weight ... 12.5 kg (27.5 lb)