Engine Electrical Systems

Charging System
Alternator and Generator Brush Wear Limit			1/4 in
Generator Brush Spring Tension			40 oz
Motorcraft Alternator Output Voltage
	Temperature	Voltage Range
	0 to 50	14.1 to 14.8
	50 to 100	13.7 to 14.5
	100 to 150	13.4 to 14.2
	150 to 200	13.1 to 13.8

Electonic Ignition System
Coil Resistance
	1974 through 1977
		Primary	1 to 2 ohms
		Secondary	8000 to 17500 ohms
	1978 through 1986 150 cu in 4-Cylinder, In-Line 6-Cylinder & V8 Engines
	Primary
		75ºF	1.13 to 1.23 ohms
		200ºF	1.50 ohms
	Secondary
		75ºF	7700 to 9300 ohms
		200ºF	12000 ohms
1980 through 1983 4-Cylinder Engine
	Primary	Zero or near zero on the low scale
	Secondary	Less than infinity on the high scale
	Coil-to-Ground		Infinity
Cranking Voltage Test
	1974 through 1977
		Switch-on Voltage	12 to 13 Volts
		Cranking Voltage	9.6 Volts
	1978 through 1986 150 cu in 4-Cylinder, Inline 6-Cylinder & V8 Engines		6 Volts
Distributor Ignition Pickup Coil Resistance
	1974 through 1977		1.6 to 2.4 ohms
	1978 through 1986 150 cu in 4-Cylinder, Inline 6-Cylinder & V8 Engines		400 to 800 ohms
	1980 through 1983 4-Cylinder Engine
	Pickup Connector		500 to 800 ohms
	Connector-to-Ground		Infinity

Conventional Ignition System
Cranking Voltage
	6-Volt System		4.5 Volts
	12-Volt System		9 Volts
Voltage Drop Test
	Battery Cable-to-Starter		0.2 or less
	Distributor Primare Terminal on the Coil-to-the Primary Terminal on the Distributor		0.05 or less
	Distributor Coil Terminal-to-Distributor Body		0.05 or less

Starting System
1953 through 1972 Models		Brush Spring Tension
	Autolite 6-Volt		42 to 53 oz
	Autolite 12-Volt		31 to 47 oz
	Delco 6-Volt		24 oz
	Delco 12-Volt
		MDM-6005, MDU-7004	31 to 47 oz
		1107746	35 oz
		1107391, 108366 and 1108375	32 to 40 oz
	Perstolite		32 to 40 oz
1973 through 1986 Models		150 cu in 4-Cylinder, In-Line 6-Cylinder & V8 Engines Only
	Brush Spring Tension		40 oz
	Brush Length		1/2 in
	Brush Wear Limit		1/4 in

Torque Specifications		Ft-lb	Nm
Alternator Bracket-to-Engine		23 to 30	31 to 41
Alternator Pivot Bolt		23 to 30	31 to 41
Starter Motor-to-Bellhousing		15 to 20	21 to 28