CHEVROLET INTERNATIONAL SERIAL NUMBERS (PASSENGER CARS AND 14 TON TRUCK) AC-1001 UP SERIAL NUMBERS (114 TON TRUCK) LQ-1001 UP DELCO-REMY GENERATING, STARTING SYSTEM DELCO-REMY IGNITION BATTERY :—Willard, U.S.L., Exide, Delco-Remy. The negative (—) terminal is grounded. Battery is mounted on right frame member under front floor boards. a § IGNITION :—Coil Model 528-B. Coil is mounted on the dash. Ignition current is x oP) 1.9 amperes at 6 volts with engine running at 40 M.P.H. and 3 amperes at 6 i i volts with engine stopped. Distributor Model 633-G. Breaker contacts separate .018-.024 inch. Set FW- 103i. contact gap by loosening lockscrew on crescent shaped stationery contact cant 1 mounting plate and turning eccentric adjusting screw until correct gap is = Ry! (% AE : x @ 3 C 4 Cc @ 6 @ obtained with breaker arm on lobe of cam. Resurface contacts when nec- essary with a fine flat contact file or on a medium hard oilstone. Breaker ea, a. arm spring tension is 17-21 ounces. Distributor is semi-automatic. Max- ore “ SY imum manual advance is 15 degrees (engine). Automatic advance begins at WA oN 600 R.P.M. (engine). Maximum automatic advance is 26 degrees at 2400 fu BRUSH R.P.M. Electrolock Model 427-B. | i( * , ESO) | Mounting :—Distributor is mounted at right of engine and is driven by gears , from the camshaft. To remove distributor, disconnect Electrolock at dash, AA Yes disconnect manual advance rod and remove head with cables intact. Then NN GENERATOR f/’/ loosen advance arm clamp screw and lift distributor out. The drive gear Ss. Lae and slotted shaft for oil pump drive are integral with the distributor. To a oral remove Electrolock from distributor housing, remove three screws on side of i a housing (two screws holding distributor head clips and one plain screw), tip the breaker plate and remove nut on end of Electrolock cable inside distributor housing. This releases cable and breaker plate. Oiling:—Fill the grease cup on the side of the distributor shaft and turn down one half turn every month or each 1000 miles. At the same time remove the head and rotor and put light engine oil in the oiler in the cen- BREAKER DISTRIBUTOR GB FOOT DIMMER SWITCH DY, ‘ ’ i: J | ARMORED CABLE IGNITION COIL © ASSN AAAS a WAN HORN of STARTING SWITCH AVES in a | LIGHTING SWITCH en] IGNITION SWITCH ELECTROLOCK COWL LIGHT re wee hy mp LCOMLEIGHTS USED ON INPERIAL AND © gj CABRIOLET IMSTEAD OF PARKING 8u188),.> : STOP LIGHT SWITCH on ter of the shaft and put a small bit of vaseline on the face of the breaker cam. vales closed). Fully advance spark lever. Continue to crank engine until VA . the flywheel mark ‘15’ is in line with pointer on the flywheel case in the (5) f¢ peephole on the right side of the motor when the piston will be 15 degrees 1 arate. Tighten the clamp screw and connect the terminal directly opposite the rotor to the spark plug in cylinder No. 1. Connect the remaining spark HEAT INDICATOR. SS +t | radiator. Spark Plugs:—Spark plugs are Metric, AC. No. 140. Gaps are .025 inch. eo 8} ite pressure, 40 pounds. Tappet clearance, .006 inch (hot) inlet, and .008 inch . @& 7 SWITCH (hot) exhaust. Sr, > Timing :—Breaker contacts begin to separate when the piston entering power stroke reaches a position 15 degrees before top dead center with the spark | Co control lever in the fully advanced position. To set timing, crank engine over until piston No. 1 enters compression stroke (the upstroke with both – : DASH LIGH before top dead center. Loosen advance arm clamp screw and rotate dis- = tributor in a counter-clockwise direction until the contacts begin to sep- : plugs in order §-3-6-2-4 clockwise around the distributor head. Firing Order:—The firing order is 1-5-3-6-2-4. No. 1 cylinder nearest the VALVE TIMING:—Specifications: Head diameter, 1 13/32 inches. Stem diam- i eter, 5/16 inch. Stem length, 4 23/32 inches. Valve lift, .277 inch. Spring S a Timing:—Inlet valves open 4 degrees after top dead center and close 42 ATA DOME LICHT degrees after lower dead center. Exhaust valves open 47 degrees before lower @)i@) CHEVROLET INTERNATIONAL SERIAL NUMBERS (PASSENGER CARS AND 12 TON TRUCK) AC-1001 UP SERIAL NUMBERS (1142 TON TRUCK) LQ-1001 UP DELCO-REMY GENERATING, STARTING SYSTEM DELCO-REMY IGNITION dead center and close 4 degrees after top dead center. The flywheel is marked at top dead center. The inlet opening point should be .14 inch on the circumference after this point. STARTER:—Model 714-L. Starter is connected to the engine through a Bendix drive. The direction of rotation is counter-clockwise, viewed from the com- mutator end. Starter cranks the engine at 175 R.P.M. Brush spring tension is 24-28 ounces, Starter Data Torque R.P.M. Volts Amperes 0 Ib. ft. eee SO0G | eee ay fe en eee 65 1b ea eexce eects LOCK. 2. ni ened DGS. …– A hash 475 Mounting:—Starter is flange mounted at right of engine on forward side of flywheel housing. To remove starter, disconnect cable and remove flange mounting cap screws. Then