| G ae DEES 2a ! are : : ; 1300 2000 rz) oe . f f 8 HORN Lr ae ae : : x) § 5 , to decrease the charging rate. Reseat the brush after adjusting the ition. Merran Operating freely as a motor, generator takes 2.7 amperes, armature revolving at 450 RPM. Shunt field winding takes 1.7 amperes LIGHTING AND IGNITION SWITCH CHEVROLET MODEL 490 areas () AUTO-LITE GENERATING, STARTING AND LIGHTING SYSTEM o REMY IGNITION BATTERY :—Willard, Type SJXR-3. 6 volt, 80 ampere-hour. The negative (—) terminal is grounded at the starting motor. IGNITION: —Breaker contacts seperate .030 inch. When the condition of the contacts affects the ignition, resurface with a fine, flat jeweler’s file or worn No. 00 sand- paper. Oiling:—Refill the grease cup under the breaker head with soft cup grease and turn down two turns every two weeks. Put a small amount of vaseline on the fiber bumper of the contact arm, applying with a toothpick. If the car is driven more than 500 miles in two weeks, these attentions must be given every 500 miles. Timing:—Breaker contacts begin to separate when the piston entering the power stroke is on top dead center, spark control lever and breaker assembly in thet fully retarded position. Firing Order:—The firing order is 1-2-4-3. Spark Plug Gaps.—Spark plug gaps are .030 inch. STARTER:—Model MF. Rotation is counter-clockwise, looking at the commutator end. Starter is connected to the engine through a Bendix drive. Starter cranks the engine at 150 to 160 R.P.M., normally, taking 160 amperes. Starter Data—Model MF R.P.M. V Torque olts Amperes 2.0- 1b it…… om 1550 4? elbie ft 2e Acorns 960.. D Nibes Bese Aste es 500… 7.5 ib. ft… to 100 Stalled Torque Data Volts Lock Torque 2.0. ..- 5.6 Ib. 3:5: …10.4 Ib. ft 5.0… ….15.0 Ib. ft The brush tension is 2 pounds. Oiling: Thoroughly clean out and repack the starter bearings with soft cup or ball- aring grease every six months, __ GENERATOR:—G.H. 1012. The direction of rotation is counter-clockwise, looking at the ;commutator end. Generator current regulation is by the third brush system. enerator Test Data Ampere Hot Test ae f Amperes Cold Test R.P.M. 660 Rd… 7 V nnn L1(.’) comme FF Fe FB PY 18.0 Loans 77 lo 0 ater ( eae enn 0 brush setting. Move the third brush in a counter-clockwise direction, looking at the commutator end, to increase the charging rate and in the opposite direction LL 3) The brush tension is 2 pounds. Charging rate is varied by adjustment of the third Oiling:—Put 5 or 6 drops of light engine oil in each of the’gererator bearing oil- ers every two weeks. If the car is driven more than 500 miles in two weeks the oiling must be done ee 500 miles. RELAY:—Relay ;closes at 10 miles per hour or 700 R.P.M. of the armature, and opens at 9 miles per hour or 600 R.P.M. of the armature. The discharge current is 0 to 2 amperes at opening of relay contacts. Clean the relay contacts by draw- ing unglaze paper between them. If badly burned or pitted, resurface them with well worn No. 00 sandpaper. Remove all grit. Adjust before again putting into service. LAMPS:—Head lamps are 6-8 volt, 17 cp. Tail lamp is 6-8 volt, 2 cp. Dome lamp is 4 cp. (used only in closed es).