Engine - New Oil Pressure Regulator/Timing Cover
83saab01SUBJECT:
NEW PRESSURE RELIEF VALVE, LATE M83-
ISSUE: 11/83-654
FILE IN S.I. MANUAL:
VOLUME: I
SECTION: 2
PAGE: 157
During 1983 model production and beginning with Engine Number D90624, a new oil pressure relief valve and timing chain cover were introduced. The new valve (P/N 75-08-328) and cover (P/N 75-08-351) must be matched when doing repair work.
The new relief valve is .2 mm (.0079") larger in diameter and will only fit the new cover. Attempting to install the old style valve (P/N 93-09-980) into the new cover will result in no oil pressure.