SERVICE SPECIFICATIONS — Starting System, Charging System STARTING SYSTEM Starter Rated voltage and output power 12 V, 1.4 kW No-load characteristic Ampere Less than 90 A rpm More than 3,500 rpm at 11.5 V Brush Length STD 15.5 mm 0.610 in. Limit 10 mm 0.39 in. Commutator Outer diameter STD 30 mm 1.18 in. Limit 29 mm 1.14 in. Undercut depth STD 0.6 mm 0.024 in. Limit 0.2 mm 0.008 in. Circle runout STD 0.05 mm 0.0020 in. Spring installed load STD 1,785 — 2,415 g 3.9 — 5.3 lb 18 — 24 N CHARGING SYSTEM Battery specific gravity when fully charged at 20°C (68°F) 1.25 — 1.27 Drive belt tension w/Borroughs drive belt tension gauge No. BT 33-73F New belt 170 ± 10 lb Used belt 135 ± 20 lb Alternator Rated output 12 V 60 A Rotor coil resistance Less than 3 Ω Brush exposed length STD 10.5 mm 0.413 in. Limit 4.5 mm 0.177 in. Alternator Regulating voltage 13.5 — 15.1 V (25°C or 77°F) regulator (IC)