Test and adjustment values for exhaust emission test I · ar0700p100002r · Mercedes-Benz WIS

AR07.00-P-1000-02R

Test and adjustment values for exhaust emission test I

Model 126 with carburetor system

Model	126.021	126.021	126.021	126.021
Sales designation	280 S	280 S	280 S	280 S
Engine	110.924	110.924	110.926	110.926
Version	Standard	open-loop TWC	Standard	open-loop TWC
Idle speed rpm	800-900	800-900	700-800	700-800
Dwell angle (at idle speed) 1) normal ° TCI °	- -	- -	- -	- -
Ignition angle without vacuum Engine speed rpm Fuel: Premium leaded °CRA before TDC Premium unleaded ° CRA before TDC Premium plus unleaded °CRA before TDC Regular unleaded °CRA before TDC Ignition angle with vacuum Engine speed rpm Fuel: Premium leaded °CRA before TDC Premium unleaded °CRA before TDC Premium plus unleaded °CRA before TDC Regular unleaded °CRA before TDC	4500 321 281 321 - - - - - -	4500 - 281 321 - - - - - -	750 101 61 101 - - - - - -	750 - 61 101 - - - - - -

Model	126.021	126.021	126.021	126.021
Sales designation	280 S	280 S	280 S	280 S
Engine	110.924	110.924	110.926	110.926
Version	Standard	open-loop TWC	Standard	open-loop TWC
Exhaust level (at idle speed) CO % by vol. CO upstream TWC 2) % by vol.	0.70.5 -	<1.2 0,70,5	0.70.5 -	<1.2 0,70,5
Use of harder valve seat rings as of engine end no. manual transmission automatic transmission date	Production start-up	3)	008 099 021 025 4/85	008 099 021 025 4/85

1) Figure underlined is the setting.
2) Perform CO measurement and setting upstream of catalytic converter only if e.g. the max. permissible CO level

at exhaust tailpipe is exceeded during emissions test.

3) No harder valve seat rings installed, for this reason:
a) On engines without hydraulic valve clearance compensation, halve valve clearance inspection interval
b) On engines with hydraulic valve clearance compensation, check basic setting of hydraulic elements during

maintenance service with additional work every 45,000 and 60,000 km, set if necessary.