Reservoir cap, location/design/function - GF20.30-P-1000A

ENGINE 605.960 in MODEL 202

ENGINE 606.912/962 in MODEL 210

ENGINE 112 in MODEL 129, 170, 202, 203, 208, 210, 220

ENGINE 113 in MODEL 129, 202, 208, 209, 210, 220

ENGINE 111.951 in MODEL 203.035 /235 /735

ENGINE 111.955 in MODEL 203.045 /245 /745

ENGINE 112.912 in MODEL 203.061/261

ENGINE 112.946 in MODEL 203.064/264

ENGINE 611.962 in MODELS 203.004 /006 /204 /206 /706

ENGINE 112.961 in MODEL 203.065 /265

ENGINE 611.960

ENGINE 611.961

ENGINE 612.961

ENGINE 612.965

ENGINE 612.963

ENGINE 613.960

ENGINE 613.961

ENGINE 612.966

ENGINE 113.968 in MODEL 209.375 /475

ENGINE 112.912 in MODEL 209.361

ENGINE 112.955 in MODEL 209.365

ENGINE 271.940 in MODEL 203.042 /242 /742, 209.342

ENGINE 271.946 in MODEL 203.046 /246 /746

ENGINE 271.948 in MODEL 203.040 /740

ENGINE 612.962

ENGINE 612.967 in MODEL 209.316

ENGINE 271.941 in MODEL 211.042 /242

ENGINE 271.942 in MODEL 203.043 /243 /743, 209.343 /443

ENGINE 112.947 in MODEL 170.465

ENGINE 112.960 in MODEL 170.466

ENGINE 113.987 in MODEL 209.376

ENGINE 112.916 in MODEL 203.081/281

ENGINE 112.953 in MODEL 203.084 /284

ENGINE 612.990 in MODEL 203.018 /218 /718

ENGINE 646.962 in MODEL 203.007 /207 /707

ENGINE 646.963 in MODEL 203.008 /208 /708

Fig 1: Identifying Expansion Reservoir, Cap And Pressure Relief Valve Stage 1,2

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Cap location	The cap (2) is screwed onto the expansion reservoir in the engine compartment.
Cap task	During the engine off heating phase (after switching off the engine) the pressure in the cooling system may rise. So that no coolant escapes, the cap (2) is additionally built-in with a compression stage.
Cap function		GF20.30-P-1000-01A