ELCAR MODEL 120 (1929) DELCO-REMY GENERATING, STARTING SYSTEM DELCO-REMY IGNITION BATTERY:—U.S.L. Type 3-HVX-6X, 6 volt. The negative (—) terminal is grounded. Starting capacity (20 minute rate) is 127 amperes for 20 min- utes. Lighting capacity (5 ampere rate) is 5 amperes for 23.4 hours. Battery is mounted under the right front seat. IGNITION:—Coil Model 528-C. Coil is mounted on the dash. Ignition current is 18 amperes at 6 volts with engine running and 4 amperes at 6 volts with engine stopped. Distributor Model 651-B. Breaker contacts separate .018-.024 inch. Set Ff fo [[ UCONN OOOO of contact gap by loosening lock screw on stationary contact mounting plate : and turning eccentric adjusting screw until correct gap is secured with breaker arm on lobe of cam. Breaker arm spring tension is 18-21 ounces. Distributor is semi-automatic. Maximum manual advance is 20 degrees (en- gine). Automatic advance begins at 300 R.P.M. of engine. Maximum auto- matic advance is 15 degrees reached at 1800 R.P.M. of engine. Breaker has two sets of contacts on a four sided cam. Contacts open alternately at intervals of 45 degrees which correspond to the 90 degree firing interval of the engine crankshaft. Contacts must be synchronized for correct ignition performance. See Timing. Mounting:—Distributor is mounted on the cylinder head. The Shaler lock, which is standard equipment, must be removed as a unit with the distribu- tor whenever distributor is taken off the car. To remove distributor, dis- connect the Shaler lock at the dash, disconnect the manual spark control and take off the distributor head with cables intact. Then take out the stop screw in the spark advance arm and lift the distributor from place. The Shaler lock can then be removed from the distributor by taking off the nut on the terminal stud inside the distributor case and withdrawing the trap mechanism and terminal stud from the distributor case. Oiling:—Fill the grease cup on the side of the distributor housing with me- dium cup grease and turn down two turns every month or each 1000 miles, At the same time remove the distributor head and rotor and fill the wick oiler in the center of the shaft with light engine oil and put a small bit of vaseline on the face of the breaker cam. Timing:—Synchronization of Contacts:—Use special Delco-Remy tool, Part No. 820738 and follow directions on Page S-25. Contacts can be synchronized without use of tool after distributor has been timed to the engine by crank- ing engine over 90 degrees from firing position of piston No. 1 when piston No. 6 will reach firing position. If the second set of contacts are not sep- arating at this point, loosen the two lock screws on the moveable breaker plate and turn the eccentric adjusting screw until the contacts begin to open. Tighten the lock screws and check the contact gap wtih the breaker arm on the lobe of the cam. If outside limits of .018-.024 inch, reset at .022 inch and repeat synchronization. IGNITION SWITCH SHALER LOCK – le} voor switcn DASH UGHT SWITCH Timing Distributor to Engine:—Breaker contacts begin to open when the piston entering power stroke reaches a position 5 degrees on the flywheel past top dead center with the manual spark control in the fully retarded position. To set timing, crank engine over until piston No, 1 enters com- pression stroke (the up stroke with both valves closed). Fully retard spark lever and continue to crank engine until piston reaches firing position when a point on the flywheel approximately 3 teeth after the top dead center mark for cylinders 1 and 8 will be opposite the indicator in the inspection hole in the flywheel housing. Then loosen advance arm clamp screw and rotate distributor until the contacts begin to open. Tighten the a 2 BACKING LIGHT SWITCH > :© Syilt: 6) DASH LIGHT CORNER | *Ze STEP LICHT we LIGHT Ss” LIGHT ————}- COT o> Sr | LIGHT BACKING | LIGHT STOP LIGHT Ie G ELCAR MODEL 120 (1929) DELCO-REMY GENERATING, STARTING SYSTEM DELCO-REMY IGNITION in cylinder No. 1. Connect the remaining spark plugs in order 6-2-5-8-3-7-4 counter-clockwise around the distributor head. Firing Order:—The firing order is 1-6-2-5-8-3-7-4. Spark Plugs:—Spark plugs are %-18 S.A.E. Standard. Gaps are .025 inch. VALVE TIMING:—INLET VALVES:—Head diameter, 154 inches. Stem diameter, -341 inch. Stem length, 5 19/32 inches. Valve lift, 11/32 inch. Spring pres- sure, 44 pounds. Tappet clearance, .006 inch. Inlet valves open at top dead center and close 45 degrees after lower dead center. EXHAUST VALVES:—Head diameter, 1 15/32 inches. Stem diameter, .341 inch. Stem length, 5 9/16 inches. Valve lift, 11/32 inch. Spring pressure, 44 pounds. Tappet clearance, .008 inch. Exhaust valves open 50 degrees before lower dead center and close 10 degrees after top dead center. Valve stem guides are removable. STARTER:—Model 720-¥. Starter is connected to the engine through a Bendix drive, The direction of rotation is counter-clockwise, looking at the com- mutator end. St